Merge branch 'linux-2.6' into powerpc-next

109 files changed, 834 insertions, 622 deletions

diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 728bb8f39441..0babb645b83c 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -544,10 +544,10 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
                 struct resource *fb_res = &lcdc_resources[2];
                 size_t fb_len = fb_res->end - fb_res->start + 1;
 
-                fb = ioremap_writecombine(fb_res->start, fb_len);
+                fb = ioremap(fb_res->start, fb_len);
                 if (fb) {
                         memset(fb, 0, fb_len);
-                        iounmap(fb, fb_len);
+                        iounmap(fb);
                 }
         }
         lcdc_data = *data;
diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index 054689804e77..450db304936f 100644
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -332,13 +332,6 @@ static struct resource lcdc_resources[] = {
                 .end    = AT91SAM9RL_ID_LCDC,
                 .flags  = IORESOURCE_IRQ,
         },
-#if defined(CONFIG_FB_INTSRAM)
-        [2] = {
-                .start  = AT91SAM9RL_SRAM_BASE,
-                .end    = AT91SAM9RL_SRAM_BASE + AT91SAM9RL_SRAM_SIZE - 1,
-                .flags  = IORESOURCE_MEM,
-        },
-#endif
 };
 
 static struct platform_device at91_lcdc_device = {
@@ -381,20 +374,6 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
         at91_set_B_periph(AT91_PIN_PC24, 0);    /* LCDD22 */
         at91_set_B_periph(AT91_PIN_PC25, 0);    /* LCDD23 */
 
-#ifdef CONFIG_FB_INTSRAM
-        {
-                void __iomem *fb;
-                struct resource *fb_res = &lcdc_resources[2];
-                size_t fb_len = fb_res->end - fb_res->start + 1;
-
-                fb = ioremap_writecombine(fb_res->start, fb_len);
-                if (fb) {
-                        memset(fb, 0, fb_len);
-                        iounmap(fb, fb_len);
-                }
-        }
-#endif
-
         lcdc_data = *data;
         platform_device_register(&at91_lcdc_device);
 }
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 0df5f6f75edf..16be41446b5b 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -135,6 +135,7 @@ config IA64_GENERIC
           HP-zx1/sx1000         For HP systems
           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
           SGI-SN2               For SGI Altix systems
+          SGI-UV                For SGI UV systems
           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 
           If you don't know what to do, choose "generic".
@@ -170,6 +171,18 @@ config IA64_SGI_SN2
           to select this option.  If in doubt, select ia64 generic support
           instead.
 
+config IA64_SGI_UV`
+        bool "SGI-UV`"
+        select NUMA
+        select ACPI_NUMA
+        select SWIOTLB
+        help
+          Selecting this option will optimize the kernel for use on UV based
+          systems, but the resulting kernel binary will not run on other
+          types of ia64 systems.  If you have an SGI UV system, it's safe
+          to select this option.  If in doubt, select ia64 generic support
+          instead.
+
 config IA64_HP_SIM
         bool "Ski-simulator"
         select SWIOTLB
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index ec4cca477f49..88f1a55c6c94 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -63,7 +63,7 @@ drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
 drivers-$(CONFIG_IA64_HP_SIM)   += arch/ia64/hp/sim/
 drivers-$(CONFIG_IA64_HP_ZX1)   += arch/ia64/hp/common/ arch/ia64/hp/zx1/
 drivers-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/hp/common/ arch/ia64/hp/zx1/
-drivers-$(CONFIG_IA64_GENERIC)  += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/
+drivers-$(CONFIG_IA64_GENERIC)  += arch/ia64/hp/common/ arch/ia64/hp/zx1/ arch/ia64/hp/sim/ arch/ia64/sn/ arch/ia64/uv/
 drivers-$(CONFIG_OPROFILE)      += arch/ia64/oprofile/
 
 boot := arch/ia64/hp/sim/boot
diff --git a/arch/ia64/ia32/ia32_support.c b/arch/ia64/ia32/ia32_support.c
index 896b1ebbfb26..a6965ddafc46 100644
--- a/arch/ia64/ia32/ia32_support.c
+++ b/arch/ia64/ia32/ia32_support.c
@@ -15,7 +15,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/mm.h>
-#include <linux/personality.h>
 #include <linux/sched.h>
 
 #include <asm/intrinsics.h>
@@ -29,7 +28,6 @@
 
 extern int die_if_kernel (char *str, struct pt_regs *regs, long err);
 
-struct exec_domain ia32_exec_domain;
 struct page *ia32_shared_page[NR_CPUS];
 unsigned long *ia32_boot_gdt;
 unsigned long *cpu_gdt_table[NR_CPUS];
@@ -240,14 +238,6 @@ ia32_cpu_init (void)
 static int __init
 ia32_init (void)
 {
-        ia32_exec_domain.name = "Linux/x86";
-        ia32_exec_domain.handler = NULL;
-        ia32_exec_domain.pers_low = PER_LINUX32;
-        ia32_exec_domain.pers_high = PER_LINUX32;
-        ia32_exec_domain.signal_map = default_exec_domain.signal_map;
-        ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
-        register_exec_domain(&ia32_exec_domain);
-
 #if PAGE_SHIFT > IA32_PAGE_SHIFT
         {
                 extern struct kmem_cache *ia64_partial_page_cachep;
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 19709a079635..853d1f11be00 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -117,7 +117,10 @@ acpi_get_sysname(void)
         if (!strcmp(hdr->oem_id, "HP")) {
                 return "hpzx1";
         } else if (!strcmp(hdr->oem_id, "SGI")) {
-                return "sn2";
+                if (!strcmp(hdr->oem_table_id + 4, "UV"))
+                        return "uv";
+                else
+                        return "sn2";
         }
 
         return "dig";
@@ -130,6 +133,8 @@ acpi_get_sysname(void)
         return "hpzx1_swiotlb";
 # elif defined (CONFIG_IA64_SGI_SN2)
         return "sn2";
+# elif defined (CONFIG_IA64_SGI_UV)
+        return "uv";
 # elif defined (CONFIG_IA64_DIG)
         return "dig";
 # else
@@ -622,6 +627,9 @@ void acpi_unregister_gsi(u32 gsi)
         if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM)
                 return;
 
+        if (has_8259 && gsi < 16)
+                return;
+
         iosapic_unregister_intr(gsi);
 }
 
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index e49ad8c5dc69..ca2bb95726de 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1156,6 +1156,9 @@ skip_rbs_switch:
          *      r31 = current->thread_info->flags
          * On exit:
          *      p6 = TRUE if work-pending-check needs to be redone
+         *
+         * Interrupts are disabled on entry, reenabled depend on work, and
+         * disabled on exit.
          */
 .work_pending_syscall:
         add r2=-8,r2
@@ -1164,16 +1167,16 @@ skip_rbs_switch:
         st8 [r2]=r8
         st8 [r3]=r10
 .work_pending:
-        tbit.z p6,p0=r31,TIF_NEED_RESCHED               // current_thread_info()->need_resched==0?
+        tbit.z p6,p0=r31,TIF_NEED_RESCHED       // is resched not needed?
 (p6)    br.cond.sptk.few .notify
 #ifdef CONFIG_PREEMPT
 (pKStk) dep r21=-1,r0,PREEMPT_ACTIVE_BIT,1
         ;;
 (pKStk) st4 [r20]=r21
-        ssm psr.i               // enable interrupts
 #endif
+        ssm psr.i               // enable interrupts
         br.call.spnt.many rp=schedule
-.ret9:  cmp.eq p6,p0=r0,r0                              // p6 <- 1
+.ret9:  cmp.eq p6,p0=r0,r0      // p6 <- 1 (re-check)
         rsm psr.i               // disable interrupts
         ;;
 #ifdef CONFIG_PREEMPT
@@ -1182,13 +1185,13 @@ skip_rbs_switch:
 (pKStk) st4 [r20]=r0            // preempt_count() <- 0
 #endif
 (pLvSys)br.cond.sptk.few  .work_pending_syscall_end
-        br.cond.sptk.many .work_processed_kernel        // re-check
+        br.cond.sptk.many .work_processed_kernel
 
 .notify:
 (pUStk) br.call.spnt.many rp=notify_resume_user
-.ret10: cmp.ne p6,p0=r0,r0                              // p6 <- 0
+.ret10: cmp.ne p6,p0=r0,r0      // p6 <- 0 (don't re-check)
 (pLvSys)br.cond.sptk.few  .work_pending_syscall_end
-        br.cond.sptk.many .work_processed_kernel        // don't re-check
+        br.cond.sptk.many .work_processed_kernel
 
 .work_pending_syscall_end:
         adds r2=PT(R8)+16,r12
@@ -1196,7 +1199,7 @@ skip_rbs_switch:
         ;;
         ld8 r8=[r2]
         ld8 r10=[r3]
-        br.cond.sptk.many .work_processed_syscall       // re-check
+        br.cond.sptk.many .work_processed_syscall
 
 END(ia64_leave_kernel)
 
@@ -1234,9 +1237,12 @@ GLOBAL_ENTRY(ia64_invoke_schedule_tail)
 END(ia64_invoke_schedule_tail)
 
         /*
-         * Setup stack and call do_notify_resume_user().  Note that pSys and pNonSys need to
-         * be set up by the caller.  We declare 8 input registers so the system call
-         * args get preserved, in case we need to restart a system call.
+         * Setup stack and call do_notify_resume_user(), keeping interrupts
+         * disabled.
+         *
+         * Note that pSys and pNonSys need to be set up by the caller.
+         * We declare 8 input registers so the system call args get preserved,
+         * in case we need to restart a system call.
          */
 ENTRY(notify_resume_user)
         .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index 4547a2092af9..9dc00f7fe10e 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -900,12 +900,6 @@ static void
 palinfo_smp_call(void *info)
 {
         palinfo_smp_data_t *data = (palinfo_smp_data_t *)info;
-        if (data == NULL) {
-                printk(KERN_ERR "palinfo: data pointer is NULL\n");
-                data->ret = 0; /* no output */
-                return;
-        }
-        /* does this actual call */
         data->ret = (*data->func)(data->page);
 }
 
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index c1ad27de2dd2..71d05133f556 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -5013,12 +5013,13 @@ pfm_context_force_terminate(pfm_context_t *ctx, struct pt_regs *regs)
 }
 
 static int pfm_ovfl_notify_user(pfm_context_t *ctx, unsigned long ovfl_pmds);
+
  /*
   * pfm_handle_work() can be called with interrupts enabled
   * (TIF_NEED_RESCHED) or disabled. The down_interruptible
   * call may sleep, therefore we must re-enable interrupts
   * to avoid deadlocks. It is safe to do so because this function
-  * is called ONLY when returning to user level (PUStk=1), in which case
+  * is called ONLY when returning to user level (pUStk=1), in which case
   * there is no risk of kernel stack overflow due to deep
   * interrupt nesting.
   */
@@ -5034,7 +5035,8 @@ pfm_handle_work(void)
 
         ctx = PFM_GET_CTX(current);
         if (ctx == NULL) {
-                printk(KERN_ERR "perfmon: [%d] has no PFM context\n", task_pid_nr(current));
+                printk(KERN_ERR "perfmon: [%d] has no PFM context\n",
+                        task_pid_nr(current));
                 return;
         }
 
@@ -5058,11 +5060,12 @@ pfm_handle_work(void)
         /*
          * must be done before we check for simple-reset mode
          */
-        if (ctx->ctx_fl_going_zombie || ctx->ctx_state == PFM_CTX_ZOMBIE) goto do_zombie;
-
+        if (ctx->ctx_fl_going_zombie || ctx->ctx_state == PFM_CTX_ZOMBIE)
+                goto do_zombie;
 
         //if (CTX_OVFL_NOBLOCK(ctx)) goto skip_blocking;
-        if (reason == PFM_TRAP_REASON_RESET) goto skip_blocking;
+        if (reason == PFM_TRAP_REASON_RESET)
+                goto skip_blocking;
 
         /*
          * restore interrupt mask to what it was on entry.
@@ -5110,7 +5113,8 @@ do_zombie:
         /*
          * in case of interruption of down() we don't restart anything
          */
-        if (ret < 0) goto nothing_to_do;
+        if (ret < 0)
+                goto nothing_to_do;
 
 skip_blocking:
         pfm_resume_after_ovfl(ctx, ovfl_regs, regs);
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 58dcfac5ea88..a3a34b4eb038 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -167,11 +167,18 @@ void tsk_clear_notify_resume(struct task_struct *tsk)
         clear_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME);
 }
 
+/*
+ * do_notify_resume_user():
+ *      Called from notify_resume_user at entry.S, with interrupts disabled.
+ */
 void
-do_notify_resume_user (sigset_t *unused, struct sigscratch *scr, long in_syscall)
+do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
 {
         if (fsys_mode(current, &scr->pt)) {
-                /* defer signal-handling etc. until we return to privilege-level 0.  */
+                /*
+                 * defer signal-handling etc. until we return to
+                 * privilege-level 0.
+                 */
                 if (!ia64_psr(&scr->pt)->lp)
                         ia64_psr(&scr->pt)->lp = 1;
                 return;
@@ -179,16 +186,26 @@ do_notify_resume_user (sigset_t *unused, struct sigscratch *scr, long in_syscall
 
 #ifdef CONFIG_PERFMON
         if (current->thread.pfm_needs_checking)
+                /*
+                 * Note: pfm_handle_work() allow us to call it with interrupts
+                 * disabled, and may enable interrupts within the function.
+                 */
                 pfm_handle_work();
 #endif
 
         /* deal with pending signal delivery */
-        if (test_thread_flag(TIF_SIGPENDING))
+        if (test_thread_flag(TIF_SIGPENDING)) {
+                local_irq_enable();     /* force interrupt enable */
                 ia64_do_signal(scr, in_syscall);
+        }
 
         /* copy user rbs to kernel rbs */
-        if (unlikely(test_thread_flag(TIF_RESTORE_RSE)))
+        if (unlikely(test_thread_flag(TIF_RESTORE_RSE))) {
+                local_irq_enable();     /* force interrupt enable */
                 ia64_sync_krbs();
+        }
+
+        local_irq_disable();    /* force interrupt disable */
 }
 
 static int pal_halt        = 1;
diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c
index a3022dc48ef8..7e0259709c04 100644
--- a/arch/ia64/kernel/sal.c
+++ b/arch/ia64/kernel/sal.c
@@ -229,6 +229,14 @@ static void __init sal_desc_ap_wakeup(void *p) { }
  */
 static int sal_cache_flush_drops_interrupts;
 
+static int __init
+force_pal_cache_flush(char *str)
+{
+        sal_cache_flush_drops_interrupts = 1;
+        return 0;
+}
+early_param("force_pal_cache_flush", force_pal_cache_flush);
+
 void __init
 check_sal_cache_flush (void)
 {
@@ -237,6 +245,9 @@ check_sal_cache_flush (void)
         u64 vector, cache_type = 3;
         struct ia64_sal_retval isrv;
 
+        if (sal_cache_flush_drops_interrupts)
+                return;
+
         cpu = get_cpu();
         local_irq_save(flags);
 
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 5015ca1275ca..e9596cd0cdab 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -239,6 +239,25 @@ __initcall(register_memory);
 
 
 #ifdef CONFIG_KEXEC
+
+/*
+ * This function checks if the reserved crashkernel is allowed on the specific
+ * IA64 machine flavour. Machines without an IO TLB use swiotlb and require
+ * some memory below 4 GB (i.e. in 32 bit area), see the implementation of
+ * lib/swiotlb.c. The hpzx1 architecture has an IO TLB but cannot use that
+ * in kdump case. See the comment in sba_init() in sba_iommu.c.
+ *
+ * So, the only machvec that really supports loading the kdump kernel
+ * over 4 GB is "sn2".
+ */
+static int __init check_crashkernel_memory(unsigned long pbase, size_t size)
+{
+        if (ia64_platform_is("sn2") || ia64_platform_is("uv"))
+                return 1;
+        else
+                return pbase < (1UL << 32);
+}
+
 static void __init setup_crashkernel(unsigned long total, int *n)
 {
         unsigned long long base = 0, size = 0;
@@ -252,6 +271,16 @@ static void __init setup_crashkernel(unsigned long total, int *n)
                         base = kdump_find_rsvd_region(size,
                                         rsvd_region, *n);
                 }
+
+                if (!check_crashkernel_memory(base, size)) {
+                        pr_warning("crashkernel: There would be kdump memory "
+                                "at %ld GB but this is unusable because it "
+                                "must\nbe below 4 GB. Change the memory "
+                                "configuration of the machine.\n",
+                                (unsigned long)(base >> 30));
+                        return;
+                }
+
                 if (base != ~0UL) {
                         printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
                                         "for crashkernel (System RAM: %ldMB)\n",
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index fc6c6636ffda..200100ea7610 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -719,3 +719,28 @@ out:
 EXPORT_SYMBOL_GPL(remove_memory);
 #endif /* CONFIG_MEMORY_HOTREMOVE */
 #endif
+
+/*
+ * Even when CONFIG_IA32_SUPPORT is not enabled it is
+ * useful to have the Linux/x86 domain registered to
+ * avoid an attempted module load when emulators call
+ * personality(PER_LINUX32). This saves several milliseconds
+ * on each such call.
+ */
+static struct exec_domain ia32_exec_domain;
+
+static int __init
+per_linux32_init(void)
+{
+        ia32_exec_domain.name = "Linux/x86";
+        ia32_exec_domain.handler = NULL;
+        ia32_exec_domain.pers_low = PER_LINUX32;
+        ia32_exec_domain.pers_high = PER_LINUX32;
+        ia32_exec_domain.signal_map = default_exec_domain.signal_map;
+        ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
+        register_exec_domain(&ia32_exec_domain);
+
+        return 0;
+}
+
+__initcall(per_linux32_init);
diff --git a/arch/ia64/uv/Makefile b/arch/ia64/uv/Makefile
new file mode 100644
index 000000000000..aa9f91947c49
--- /dev/null
+++ b/arch/ia64/uv/Makefile
@@ -0,0 +1,12 @@
+# arch/ia64/uv/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+#
+# Makefile for the sn uv subplatform
+#
+
+obj-y += kernel/
diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile
new file mode 100644
index 000000000000..8d92b4684d8e
--- /dev/null
+++ b/arch/ia64/uv/kernel/Makefile
@@ -0,0 +1,13 @@
+# arch/ia64/uv/kernel/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+#
+
+EXTRA_CFLAGS += -Iarch/ia64/sn/include
+
+obj-y                           += setup.o
+obj-$(CONFIG_IA64_GENERIC)      += machvec.o
diff --git a/arch/ia64/uv/kernel/machvec.c b/arch/ia64/uv/kernel/machvec.c
new file mode 100644
index 000000000000..50737a9dca74
--- /dev/null
+++ b/arch/ia64/uv/kernel/machvec.c
@@ -0,0 +1,11 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+ */
+
+#define MACHVEC_PLATFORM_NAME   uv
+#define MACHVEC_PLATFORM_HEADER <asm/machvec_uv.h>
+#include <asm/machvec_init.h>
diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
new file mode 100644
index 000000000000..9aa743203c3c
--- /dev/null
+++ b/arch/ia64/uv/kernel/setup.c
@@ -0,0 +1,98 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * SGI UV Core Functions
+ *
+ * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/percpu.h>
+#include <asm/sn/simulator.h>
+#include <asm/uv/uv_mmrs.h>
+#include <asm/uv/uv_hub.h>
+
+DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
+EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
+
+
+struct redir_addr {
+        unsigned long redirect;
+        unsigned long alias;
+};
+
+#define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
+
+static __initdata struct redir_addr redir_addrs[] = {
+        {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
+        {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
+        {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
+};
+
+static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
+{
+        union uvh_si_alias0_overlay_config_u alias;
+        union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
+                alias.v = uv_read_local_mmr(redir_addrs[i].alias);
+                if (alias.s.base == 0) {
+                        *size = (1UL << alias.s.m_alias);
+                        redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
+                        *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
+                        return;
+                }
+        }
+        BUG();
+}
+
+void __init uv_setup(char **cmdline_p)
+{
+        union uvh_si_addr_map_config_u m_n_config;
+        union uvh_node_id_u node_id;
+        unsigned long gnode_upper;
+        int nid, cpu, m_val, n_val;
+        unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;
+
+        if (IS_MEDUSA()) {
+                lowmem_redir_base = 0;
+                lowmem_redir_size = 0;
+                node_id.v = 0;
+                m_n_config.s.m_skt = 37;
+                m_n_config.s.n_skt = 0;
+                mmr_base = 0;
+        } else {
+                get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
+                node_id.v = uv_read_local_mmr(UVH_NODE_ID);
+                m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
+                mmr_base =
+                        uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
+                                ~UV_MMR_ENABLE;
+        }
+
+        m_val = m_n_config.s.m_skt;
+        n_val = m_n_config.s.n_skt;
+        printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
+
+        gnode_upper = (((unsigned long)node_id.s.node_id) &
+                       ~((1 << n_val) - 1)) << m_val;
+
+        for_each_present_cpu(cpu) {
+                nid = cpu_to_node(cpu);
+                uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
+                uv_cpu_hub_info(cpu)->lowmem_remap_top =
+                        lowmem_redir_base + lowmem_redir_size;
+                uv_cpu_hub_info(cpu)->m_val = m_val;
+                uv_cpu_hub_info(cpu)->n_val = m_val;
+                uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1;
+                uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
+                uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
+                uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
+                uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
+                printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid);
+        }
+}
+
diff --git a/arch/m68knommu/Kconfig b/arch/m68knommu/Kconfig
index 07eb4c4bab82..8e8441587c22 100644
--- a/arch/m68knommu/Kconfig
+++ b/arch/m68knommu/Kconfig
@@ -671,6 +671,9 @@ config ROMKERNEL
 
 endchoice
 
+if COLDFIRE
+source "kernel/Kconfig.preempt"
+endif
 source "mm/Kconfig"
 
 endmenu
diff --git a/arch/m68knommu/kernel/vmlinux.lds.S b/arch/m68knommu/kernel/vmlinux.lds.S
index 5592e0bf951f..93e69236ed6f 100644
--- a/arch/m68knommu/kernel/vmlinux.lds.S
+++ b/arch/m68knommu/kernel/vmlinux.lds.S
@@ -114,6 +114,16 @@ SECTIONS {
                 *(__kcrctab_gpl)
                 __stop___kcrctab_gpl = .;
 
+                /* Kernel symbol table: Normal unused symbols */
+                __start___kcrctab_unused = .;
+                *(__kcrctab_unused)
+                __stop___kcrctab_unused = .;
+
+                /* Kernel symbol table: GPL-only unused symbols */
+                __start___kcrctab_unused_gpl = .;
+                *(__kcrctab_unused_gpl)
+                __stop___kcrctab_unused_gpl = .;
+
                 /* Kernel symbol table: GPL-future symbols */
                 __start___kcrctab_gpl_future = .;
                 *(__kcrctab_gpl_future)
diff --git a/arch/mn10300/boot/install.sh b/arch/mn10300/boot/install.sh
index 072951c83976..abba30971191 100644
--- a/arch/mn10300/boot/install.sh
+++ b/arch/mn10300/boot/install.sh
@@ -26,42 +26,42 @@ rm -fr $4/../usr/include/linux $4/../usr/include/asm
 install -c -m 0755 $2 $4/vmlinuz
 install -c -m 0755 $5 $4/boot.rom
 install -c -m 0755 -d $4/../usr/include/linux
-cd $TOPDIR/include/linux
+cd ${srctree}/include/linux
 for i in `find . -maxdepth 1 -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/linux
 done
 install -c -m 0755 -d $4/../usr/include/linux/byteorder
-cd $TOPDIR/include/linux/byteorder
+cd ${srctree}/include/linux/byteorder
 for i in `find . -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/linux/byteorder
 done
 install -c -m 0755 -d $4/../usr/include/linux/lockd
-cd $TOPDIR/include/linux/lockd
+cd ${srctree}/include/linux/lockd
 for i in `find . -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/linux/lockd
 done
 install -c -m 0755 -d $4/../usr/include/linux/netfilter_ipv4
-cd $TOPDIR/include/linux/netfilter_ipv4
+cd ${srctree}/include/linux/netfilter_ipv4
 for i in `find . -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/linux/netfilter_ipv4
 done
 install -c -m 0755 -d $4/../usr/include/linux/nfsd
-cd $TOPDIR/include/linux/nfsd
+cd ${srctree}/include/linux/nfsd
 for i in `find . -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/linux/nfsd/$i
 done
 install -c -m 0755 -d $4/../usr/include/linux/raid
-cd $TOPDIR/include/linux/raid
+cd ${srctree}/include/linux/raid
 for i in `find . -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/linux/raid
 done
 install -c -m 0755 -d $4/../usr/include/linux/sunrpc
-cd $TOPDIR/include/linux/sunrpc
+cd ${srctree}/include/linux/sunrpc
 for i in `find . -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/linux/sunrpc
 done
 install -c -m 0755 -d $4/../usr/include/asm
-cd $TOPDIR/include/asm
+cd ${srctree}/include/asm
 for i in `find . -name '*.h' -print`; do
   install -c -m 0644 $i $4/../usr/include/asm
 done
diff --git a/arch/parisc/hpux/gate.S b/arch/parisc/hpux/gate.S
index 38a1c1b8d4e8..f0b18ce89842 100644
--- a/arch/parisc/hpux/gate.S
+++ b/arch/parisc/hpux/gate.S
@@ -13,9 +13,10 @@
 #include <asm/unistd.h>
 #include <asm/errno.h>
 #include <linux/linkage.h>
+#include <linux/init.h>
 
         .level  LEVEL
-        .text
+        __HEAD
 
         .import hpux_call_table
         .import hpux_syscall_exit,code
diff --git a/arch/parisc/hpux/wrappers.S b/arch/parisc/hpux/wrappers.S
index 58c53c879c02..ccd3a50c0995 100644
--- a/arch/parisc/hpux/wrappers.S
+++ b/arch/parisc/hpux/wrappers.S
@@ -28,9 +28,10 @@
 #include <asm/assembly.h>
 #include <asm/signal.h>
 #include <linux/linkage.h>
+#include <linux/init.h>
 
         .level  LEVEL
-        .text
+        __HEAD
 
         /* These should probably go in a header file somewhere.
          * They are duplicated in kernel/wrappers.S
diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile
index 1f6585a56f97..016d3fc4111c 100644
--- a/arch/parisc/kernel/Makefile
+++ b/arch/parisc/kernel/Makefile
@@ -4,9 +4,6 @@
 
 extra-y                 := init_task.o head.o vmlinux.lds
 
-AFLAGS_entry.o  := -traditional
-AFLAGS_pacache.o := -traditional
-
 obj-y           := cache.o pacache.o setup.o traps.o time.o irq.o \
                    pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \
                    ptrace.o hardware.o inventory.o drivers.o \
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 111d47284eac..5d0837458c19 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -38,18 +38,11 @@
 #include <asm/thread_info.h>
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 
 #ifdef CONFIG_64BIT
-#define CMPIB           cmpib,*
-#define CMPB            cmpb,*
-#define COND(x)         *x
-
         .level 2.0w
 #else
-#define CMPIB           cmpib,
-#define CMPB            cmpb,
-#define COND(x)         x
-
         .level 2.0
 #endif
 
@@ -629,7 +622,7 @@
          * the static part of the kernel address space.
          */
 
-        .text
+        __HEAD
 
         .align  PAGE_SIZE
 
@@ -957,9 +950,9 @@ intr_check_sig:
          * Only do signals if we are returning to user space
          */
         LDREG   PT_IASQ0(%r16), %r20
-        CMPIB=,n 0,%r20,intr_restore /* backward */
+        cmpib,COND(=),n 0,%r20,intr_restore /* backward */
         LDREG   PT_IASQ1(%r16), %r20
-        CMPIB=,n 0,%r20,intr_restore /* backward */
+        cmpib,COND(=),n 0,%r20,intr_restore /* backward */
 
         copy    %r0, %r25                       /* long in_syscall = 0 */
 #ifdef CONFIG_64BIT
@@ -1013,10 +1006,10 @@ intr_do_resched:
          * we jump back to intr_restore.
          */
         LDREG   PT_IASQ0(%r16), %r20
-        CMPIB=  0, %r20, intr_do_preempt
+        cmpib,COND(=)   0, %r20, intr_do_preempt
         nop
         LDREG   PT_IASQ1(%r16), %r20
-        CMPIB=  0, %r20, intr_do_preempt
+        cmpib,COND(=)   0, %r20, intr_do_preempt
         nop
 
 #ifdef CONFIG_64BIT
@@ -1045,7 +1038,7 @@ intr_do_preempt:
         /* current_thread_info()->preempt_count */
         mfctl   %cr30, %r1
         LDREG   TI_PRE_COUNT(%r1), %r19
-        CMPIB<> 0, %r19, intr_restore   /* if preempt_count > 0 */
+        cmpib,COND(<>)  0, %r19, intr_restore   /* if preempt_count > 0 */
         nop                             /* prev insn branched backwards */
 
         /* check if we interrupted a critical path */
@@ -1064,7 +1057,7 @@ intr_do_preempt:
          */
 
 intr_extint:
-        CMPIB=,n 0,%r16,1f
+        cmpib,COND(=),n 0,%r16,1f
 
         get_stack_use_cr30
         b,n 2f
@@ -1099,7 +1092,7 @@ ENDPROC(syscall_exit_rfi)
 
 ENTRY(intr_save)                /* for os_hpmc */
         mfsp    %sr7,%r16
-        CMPIB=,n 0,%r16,1f
+        cmpib,COND(=),n 0,%r16,1f
         get_stack_use_cr30
         b       2f
         copy    %r8,%r26
@@ -1121,7 +1114,7 @@ ENTRY(intr_save)		/* for os_hpmc */
          *           adjust isr/ior below.
          */
 
-        CMPIB=,n        6,%r26,skip_save_ior
+        cmpib,COND(=),n        6,%r26,skip_save_ior
 
 
         mfctl           %cr20, %r16 /* isr */
@@ -1450,11 +1443,11 @@ nadtlb_emulate:
         bb,>=,n         %r9,26,nadtlb_nullify  /* m bit not set, just nullify */
         BL              get_register,%r25
         extrw,u         %r9,15,5,%r8           /* Get index register # */
-        CMPIB=,n        -1,%r1,nadtlb_fault    /* have to use slow path */
+        cmpib,COND(=),n        -1,%r1,nadtlb_fault    /* have to use slow path */
         copy            %r1,%r24
         BL              get_register,%r25
         extrw,u         %r9,10,5,%r8           /* Get base register # */
-        CMPIB=,n        -1,%r1,nadtlb_fault    /* have to use slow path */
+        cmpib,COND(=),n        -1,%r1,nadtlb_fault    /* have to use slow path */
         BL              set_register,%r25
         add,l           %r1,%r24,%r1           /* doesn't affect c/b bits */
 
@@ -1486,7 +1479,7 @@ nadtlb_probe_check:
         cmpb,<>,n       %r16,%r17,nadtlb_fault /* Must be probe,[rw]*/
         BL              get_register,%r25      /* Find the target register */
         extrw,u         %r9,31,5,%r8           /* Get target register */
-        CMPIB=,n        -1,%r1,nadtlb_fault    /* have to use slow path */
+        cmpib,COND(=),n        -1,%r1,nadtlb_fault    /* have to use slow path */
         BL              set_register,%r25
         copy            %r0,%r1                /* Write zero to target register */
         b nadtlb_nullify                       /* Nullify return insn */
@@ -1570,12 +1563,12 @@ dbit_trap_20w:
         L3_ptep         ptp,pte,t0,va,dbit_fault
 
 #ifdef CONFIG_SMP
-        CMPIB=,n        0,spc,dbit_nolock_20w
+        cmpib,COND(=),n        0,spc,dbit_nolock_20w
         load32          PA(pa_dbit_lock),t0
 
 dbit_spin_20w:
         LDCW            0(t0),t1
-        cmpib,=         0,t1,dbit_spin_20w
+        cmpib,COND(=)         0,t1,dbit_spin_20w
         nop
 
 dbit_nolock_20w:
@@ -1586,7 +1579,7 @@ dbit_nolock_20w:
                 
         idtlbt          pte,prot
 #ifdef CONFIG_SMP
-        CMPIB=,n        0,spc,dbit_nounlock_20w
+        cmpib,COND(=),n        0,spc,dbit_nounlock_20w
         ldi             1,t1
         stw             t1,0(t0)
 
@@ -1606,7 +1599,7 @@ dbit_trap_11:
         L2_ptep         ptp,pte,t0,va,dbit_fault
 
 #ifdef CONFIG_SMP
-        CMPIB=,n        0,spc,dbit_nolock_11
+        cmpib,COND(=),n        0,spc,dbit_nolock_11
         load32          PA(pa_dbit_lock),t0
 
 dbit_spin_11:
@@ -1628,7 +1621,7 @@ dbit_nolock_11:
 
         mtsp            t1, %sr1     /* Restore sr1 */
 #ifdef CONFIG_SMP
-        CMPIB=,n        0,spc,dbit_nounlock_11
+        cmpib,COND(=),n        0,spc,dbit_nounlock_11
         ldi             1,t1
         stw             t1,0(t0)
 
@@ -1646,7 +1639,7 @@ dbit_trap_20:
         L2_ptep         ptp,pte,t0,va,dbit_fault
 
 #ifdef CONFIG_SMP
-        CMPIB=,n        0,spc,dbit_nolock_20
+        cmpib,COND(=),n        0,spc,dbit_nolock_20
         load32          PA(pa_dbit_lock),t0
 
 dbit_spin_20:
@@ -1665,7 +1658,7 @@ dbit_nolock_20:
         idtlbt          pte,prot
 
 #ifdef CONFIG_SMP
-        CMPIB=,n        0,spc,dbit_nounlock_20
+        cmpib,COND(=),n        0,spc,dbit_nounlock_20
         ldi             1,t1
         stw             t1,0(t0)
 
@@ -1994,7 +1987,7 @@ ENTRY(syscall_exit)
 
         /* We can't use "CMPIB<> PER_HPUX" since "im5" field is sign extended */
         ldo       -PER_HPUX(%r19), %r19
-        CMPIB<>,n 0,%r19,1f
+        cmpib,COND(<>),n 0,%r19,1f
 
         /* Save other hpux returns if personality is PER_HPUX */
         STREG     %r22,TASK_PT_GR22(%r1)
diff --git a/arch/parisc/kernel/head.S b/arch/parisc/kernel/head.S
index ec2482dc1beb..5680a2c3b13d 100644
--- a/arch/parisc/kernel/head.S
+++ b/arch/parisc/kernel/head.S
@@ -32,7 +32,7 @@ ENTRY(boot_args)
         .word 0 /* arg3 */
 END(boot_args)
 
-        .section .text.head
+        __HEAD
         .align  4
         .import init_thread_union,data
         .import fault_vector_20,code    /* IVA parisc 2.0 32 bit */
diff --git a/arch/parisc/kernel/hpmc.S b/arch/parisc/kernel/hpmc.S
index 2cbf13b3ef11..068322eb8c9b 100644
--- a/arch/parisc/kernel/hpmc.S
+++ b/arch/parisc/kernel/hpmc.S
@@ -47,6 +47,7 @@
 #include <asm/pdc.h>
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 
         /*
          * stack for os_hpmc, the HPMC handler.
@@ -76,7 +77,7 @@ ENTRY(hpmc_pim_data)
         .block HPMC_PIM_DATA_SIZE
 END(hpmc_pim_data)
 
-        .text
+        __HEAD
 
         .import intr_save, code
 ENTRY(os_hpmc)
diff --git a/arch/parisc/kernel/inventory.c b/arch/parisc/kernel/inventory.c
index 4845a6444633..bd1f7f1ff74e 100644
--- a/arch/parisc/kernel/inventory.c
+++ b/arch/parisc/kernel/inventory.c
@@ -499,7 +499,7 @@ add_system_map_addresses(struct parisc_device *dev, int num_addrs,
         dev->addr = kmalloc(num_addrs * sizeof(unsigned long), GFP_KERNEL);
         if(!dev->addr) {
                 printk(KERN_ERR "%s %s(): memory allocation failure\n",
-                       __FILE__, __FUNCTION__);
+                       __FILE__, __func__);
                 return;
         }
 
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 5901092e0196..e3246a5ca74f 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -37,8 +37,9 @@
 #include <asm/pgtable.h>
 #include <asm/cache.h>
 #include <linux/linkage.h>
+#include <linux/init.h>
 
-        .text
+        __HEAD
         .align  128
 
 ENTRY(flush_tlb_all_local)
@@ -85,7 +86,7 @@ ENTRY(flush_tlb_all_local)
         LDREG           ITLB_OFF_COUNT(%r1), %arg2
         LDREG           ITLB_LOOP(%r1), %arg3
 
-        ADDIB=          -1, %arg3, fitoneloop   /* Preadjust and test */
+        addib,COND(=)           -1, %arg3, fitoneloop   /* Preadjust and test */
         movb,<,n        %arg3, %r31, fitdone    /* If loop < 0, skip */
         copy            %arg0, %r28             /* Init base addr */
 
@@ -95,14 +96,14 @@ fitmanyloop:					/* Loop if LOOP >= 2 */
         copy            %arg2, %r29             /* Init middle loop count */
 
 fitmanymiddle:                                  /* Loop if LOOP >= 2 */
-        ADDIB>          -1, %r31, fitmanymiddle /* Adjusted inner loop decr */
+        addib,COND(>)           -1, %r31, fitmanymiddle /* Adjusted inner loop decr */
         pitlbe          0(%sr1, %r28)
         pitlbe,m        %arg1(%sr1, %r28)       /* Last pitlbe and addr adjust */
-        ADDIB>          -1, %r29, fitmanymiddle /* Middle loop decr */
+        addib,COND(>)           -1, %r29, fitmanymiddle /* Middle loop decr */
         copy            %arg3, %r31             /* Re-init inner loop count */
 
         movb,tr         %arg0, %r28, fitmanyloop /* Re-init base addr */
-        ADDIB<=,n       -1, %r22, fitdone       /* Outer loop count decr */
+        addib,COND(<=),n        -1, %r22, fitdone       /* Outer loop count decr */
 
 fitoneloop:                                     /* Loop if LOOP = 1 */
         mtsp            %r20, %sr1
@@ -110,10 +111,10 @@ fitoneloop:					/* Loop if LOOP = 1 */
         copy            %arg2, %r29             /* init middle loop count */
 
 fitonemiddle:                                   /* Loop if LOOP = 1 */
-        ADDIB>          -1, %r29, fitonemiddle  /* Middle loop count decr */
+        addib,COND(>)           -1, %r29, fitonemiddle  /* Middle loop count decr */
         pitlbe,m        %arg1(%sr1, %r28)       /* pitlbe for one loop */
 
-        ADDIB>          -1, %r22, fitoneloop    /* Outer loop count decr */
+        addib,COND(>)           -1, %r22, fitoneloop    /* Outer loop count decr */
         add             %r21, %r20, %r20                /* increment space */
 
 fitdone:
@@ -128,7 +129,7 @@ fitdone:
         LDREG           DTLB_OFF_COUNT(%r1), %arg2
         LDREG           DTLB_LOOP(%r1), %arg3
 
-        ADDIB=          -1, %arg3, fdtoneloop   /* Preadjust and test */
+        addib,COND(=)           -1, %arg3, fdtoneloop   /* Preadjust and test */
         movb,<,n        %arg3, %r31, fdtdone    /* If loop < 0, skip */
         copy            %arg0, %r28             /* Init base addr */
 
@@ -138,14 +139,14 @@ fdtmanyloop:					/* Loop if LOOP >= 2 */
         copy            %arg2, %r29             /* Init middle loop count */
 
 fdtmanymiddle:                                  /* Loop if LOOP >= 2 */
-        ADDIB>          -1, %r31, fdtmanymiddle /* Adjusted inner loop decr */
+        addib,COND(>)           -1, %r31, fdtmanymiddle /* Adjusted inner loop decr */
         pdtlbe          0(%sr1, %r28)
         pdtlbe,m        %arg1(%sr1, %r28)       /* Last pdtlbe and addr adjust */
-        ADDIB>          -1, %r29, fdtmanymiddle /* Middle loop decr */
+        addib,COND(>)           -1, %r29, fdtmanymiddle /* Middle loop decr */
         copy            %arg3, %r31             /* Re-init inner loop count */
 
         movb,tr         %arg0, %r28, fdtmanyloop /* Re-init base addr */
-        ADDIB<=,n       -1, %r22,fdtdone        /* Outer loop count decr */
+        addib,COND(<=),n        -1, %r22,fdtdone        /* Outer loop count decr */
 
 fdtoneloop:                                     /* Loop if LOOP = 1 */
         mtsp            %r20, %sr1
@@ -153,10 +154,10 @@ fdtoneloop:					/* Loop if LOOP = 1 */
         copy            %arg2, %r29             /* init middle loop count */
 
 fdtonemiddle:                                   /* Loop if LOOP = 1 */
-        ADDIB>          -1, %r29, fdtonemiddle  /* Middle loop count decr */
+        addib,COND(>)           -1, %r29, fdtonemiddle  /* Middle loop count decr */
         pdtlbe,m        %arg1(%sr1, %r28)       /* pdtlbe for one loop */
 
-        ADDIB>          -1, %r22, fdtoneloop    /* Outer loop count decr */
+        addib,COND(>)           -1, %r22, fdtoneloop    /* Outer loop count decr */
         add             %r21, %r20, %r20        /* increment space */
 
 
@@ -209,18 +210,18 @@ ENTRY(flush_instruction_cache_local)
         LDREG           ICACHE_COUNT(%r1), %arg2
         LDREG           ICACHE_LOOP(%r1), %arg3
         rsm             PSW_SM_I, %r22          /* No mmgt ops during loop*/
-        ADDIB=          -1, %arg3, fioneloop    /* Preadjust and test */
+        addib,COND(=)           -1, %arg3, fioneloop    /* Preadjust and test */
         movb,<,n        %arg3, %r31, fisync     /* If loop < 0, do sync */
 
 fimanyloop:                                     /* Loop if LOOP >= 2 */
-        ADDIB>          -1, %r31, fimanyloop    /* Adjusted inner loop decr */
+        addib,COND(>)           -1, %r31, fimanyloop    /* Adjusted inner loop decr */
         fice            %r0(%sr1, %arg0)
         fice,m          %arg1(%sr1, %arg0)      /* Last fice and addr adjust */
         movb,tr         %arg3, %r31, fimanyloop /* Re-init inner loop count */
-        ADDIB<=,n       -1, %arg2, fisync       /* Outer loop decr */
+        addib,COND(<=),n        -1, %arg2, fisync       /* Outer loop decr */
 
 fioneloop:                                      /* Loop if LOOP = 1 */
-        ADDIB>          -1, %arg2, fioneloop    /* Outer loop count decr */
+        addib,COND(>)           -1, %arg2, fioneloop    /* Outer loop count decr */
         fice,m          %arg1(%sr1, %arg0)      /* Fice for one loop */
 
 fisync:
@@ -250,18 +251,18 @@ ENTRY(flush_data_cache_local)
         LDREG           DCACHE_COUNT(%r1), %arg2
         LDREG           DCACHE_LOOP(%r1), %arg3
         rsm             PSW_SM_I, %r22
-        ADDIB=          -1, %arg3, fdoneloop    /* Preadjust and test */
+        addib,COND(=)           -1, %arg3, fdoneloop    /* Preadjust and test */
         movb,<,n        %arg3, %r31, fdsync     /* If loop < 0, do sync */
 
 fdmanyloop:                                     /* Loop if LOOP >= 2 */
-        ADDIB>          -1, %r31, fdmanyloop    /* Adjusted inner loop decr */
+        addib,COND(>)           -1, %r31, fdmanyloop    /* Adjusted inner loop decr */
         fdce            %r0(%sr1, %arg0)
         fdce,m          %arg1(%sr1, %arg0)      /* Last fdce and addr adjust */
         movb,tr         %arg3, %r31, fdmanyloop /* Re-init inner loop count */
-        ADDIB<=,n       -1, %arg2, fdsync       /* Outer loop decr */
+        addib,COND(<=),n        -1, %arg2, fdsync       /* Outer loop decr */
 
 fdoneloop:                                      /* Loop if LOOP = 1 */
-        ADDIB>          -1, %arg2, fdoneloop    /* Outer loop count decr */
+        addib,COND(>)           -1, %arg2, fdoneloop    /* Outer loop count decr */
         fdce,m          %arg1(%sr1, %arg0)      /* Fdce for one loop */
 
 fdsync:
@@ -342,7 +343,7 @@ ENTRY(copy_user_page_asm)
          * non-taken backward branch. Note that .+4 is a backwards branch.
          * The ldd should only get executed if the branch is taken.
          */
-        ADDIB>,n        -1, %r1, 1b             /* bundle 10 */
+        addib,COND(>),n -1, %r1, 1b             /* bundle 10 */
         ldd             0(%r25), %r19           /* start next loads */
 
 #else
@@ -391,7 +392,7 @@ ENTRY(copy_user_page_asm)
         stw             %r21, 56(%r26)
         stw             %r22, 60(%r26)
         ldo             64(%r26), %r26
-        ADDIB>,n        -1, %r1, 1b
+        addib,COND(>),n -1, %r1, 1b
         ldw             0(%r25), %r19
 #endif
         bv              %r0(%r2)
@@ -515,7 +516,7 @@ ENTRY(copy_user_page_asm)
         stw             %r21, 56(%r28)
         stw             %r22, 60(%r28)
         ldo             64(%r28), %r28
-        ADDIB>          -1, %r1,1b
+        addib,COND(>)           -1, %r1,1b
         ldo             64(%r29), %r29
 
         bv              %r0(%r2)
@@ -574,7 +575,7 @@ ENTRY(__clear_user_page_asm)
         std             %r0, 104(%r28)
         std             %r0, 112(%r28)
         std             %r0, 120(%r28)
-        ADDIB>          -1, %r1, 1b
+        addib,COND(>)           -1, %r1, 1b
         ldo             128(%r28), %r28
 
 #else   /* ! CONFIG_64BIT */
@@ -597,7 +598,7 @@ ENTRY(__clear_user_page_asm)
         stw             %r0, 52(%r28)
         stw             %r0, 56(%r28)
         stw             %r0, 60(%r28)
-        ADDIB>          -1, %r1, 1b
+        addib,COND(>)           -1, %r1, 1b
         ldo             64(%r28), %r28
 #endif  /* CONFIG_64BIT */
 
@@ -640,7 +641,7 @@ ENTRY(flush_kernel_dcache_page_asm)
         fdc,m           %r23(%r26)
         fdc,m           %r23(%r26)
         fdc,m           %r23(%r26)
-        CMPB<<          %r26, %r25,1b
+        cmpb,COND(<<)           %r26, %r25,1b
         fdc,m           %r23(%r26)
 
         sync
@@ -683,7 +684,7 @@ ENTRY(flush_user_dcache_page)
         fdc,m           %r23(%sr3, %r26)
         fdc,m           %r23(%sr3, %r26)
         fdc,m           %r23(%sr3, %r26)
-        CMPB<<          %r26, %r25,1b
+        cmpb,COND(<<)           %r26, %r25,1b
         fdc,m           %r23(%sr3, %r26)
 
         sync
@@ -726,7 +727,7 @@ ENTRY(flush_user_icache_page)
         fic,m           %r23(%sr3, %r26)
         fic,m           %r23(%sr3, %r26)
         fic,m           %r23(%sr3, %r26)
-        CMPB<<          %r26, %r25,1b
+        cmpb,COND(<<)           %r26, %r25,1b
         fic,m           %r23(%sr3, %r26)
 
         sync
@@ -769,7 +770,7 @@ ENTRY(purge_kernel_dcache_page)
         pdc,m           %r23(%r26)
         pdc,m           %r23(%r26)
         pdc,m           %r23(%r26)
-        CMPB<<          %r26, %r25, 1b
+        cmpb,COND(<<)           %r26, %r25, 1b
         pdc,m           %r23(%r26)
 
         sync
@@ -833,7 +834,7 @@ ENTRY(flush_alias_page)
         fdc,m           %r23(%r28)
         fdc,m           %r23(%r28)
         fdc,m           %r23(%r28)
-        CMPB<<          %r28, %r29, 1b
+        cmpb,COND(<<)           %r28, %r29, 1b
         fdc,m           %r23(%r28)
 
         sync
@@ -856,7 +857,7 @@ flush_user_dcache_range_asm:
         ldo             -1(%r23), %r21
         ANDCM           %r26, %r21, %r26
 
-1:      CMPB<<,n        %r26, %r25, 1b
+1:      cmpb,COND(<<),n %r26, %r25, 1b
         fdc,m           %r23(%sr3, %r26)
 
         sync
@@ -877,7 +878,7 @@ ENTRY(flush_kernel_dcache_range_asm)
         ldo             -1(%r23), %r21
         ANDCM           %r26, %r21, %r26
 
-1:      CMPB<<,n        %r26, %r25,1b
+1:      cmpb,COND(<<),n %r26, %r25,1b
         fdc,m           %r23(%r26)
 
         sync
@@ -899,7 +900,7 @@ ENTRY(flush_user_icache_range_asm)
         ldo             -1(%r23), %r21
         ANDCM           %r26, %r21, %r26
 
-1:      CMPB<<,n        %r26, %r25,1b
+1:      cmpb,COND(<<),n %r26, %r25,1b
         fic,m           %r23(%sr3, %r26)
 
         sync
@@ -942,7 +943,7 @@ ENTRY(flush_kernel_icache_page)
         fic,m           %r23(%sr4, %r26)
         fic,m           %r23(%sr4, %r26)
         fic,m           %r23(%sr4, %r26)
-        CMPB<<          %r26, %r25, 1b
+        cmpb,COND(<<)           %r26, %r25, 1b
         fic,m           %r23(%sr4, %r26)
 
         sync
@@ -963,7 +964,7 @@ ENTRY(flush_kernel_icache_range_asm)
         ldo             -1(%r23), %r21
         ANDCM           %r26, %r21, %r26
 
-1:      CMPB<<,n        %r26, %r25, 1b
+1:      cmpb,COND(<<),n %r26, %r25, 1b
         fic,m           %r23(%sr4, %r26)
 
         sync
diff --git a/arch/parisc/kernel/perf_asm.S b/arch/parisc/kernel/perf_asm.S
index 43874ca3ed67..d411dfb5b6d1 100644
--- a/arch/parisc/kernel/perf_asm.S
+++ b/arch/parisc/kernel/perf_asm.S
@@ -20,6 +20,8 @@
  */
 
 #include <asm/assembly.h>
+
+#include <linux/init.h>
 #include <linux/linkage.h>
 
 #ifdef CONFIG_64BIT
@@ -41,7 +43,7 @@
 ; The coprocessor only needs to be enabled when
 ; starting/stopping the coprocessor with the pmenb/pmdis.
 ;
-        .text
+        __HEAD
 
 ENTRY(perf_intrigue_enable_perf_counters)
         .proc
diff --git a/arch/parisc/kernel/real2.S b/arch/parisc/kernel/real2.S
index 7a92695d95a6..47fbdae6efd5 100644
--- a/arch/parisc/kernel/real2.S
+++ b/arch/parisc/kernel/real2.S
@@ -12,6 +12,7 @@
 #include <asm/assembly.h>
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 
         .section        .bss
         .export real_stack
@@ -39,7 +40,7 @@ save_cr_end:
 /************************ 32-bit real-mode calls ***********************/
 /* This can be called in both narrow and wide kernels */
 
-        .text
+        __HEAD
 
         /* unsigned long real32_call_asm(unsigned int *sp,
          *              unsigned int *arg0p,
@@ -113,7 +114,7 @@ ENDPROC(real32_call_asm)
 #  define PUSH_CR(r, where) mfctl r, %r1 ! STREG,ma %r1, REG_SZ(where)
 #  define POP_CR(r, where) LDREG,mb -REG_SZ(where), %r1 ! mtctl %r1, r
 
-        .text
+        __HEAD
 save_control_regs:
         load32  PA(save_cr_space), %r28
         PUSH_CR(%cr24, %r28)
@@ -145,7 +146,7 @@ restore_control_regs:
 /* rfi_virt2real() and rfi_real2virt() could perhaps be adapted for
  * more general-purpose use by the several places which need RFIs
  */
-        .text
+        __HEAD
         .align 128
 rfi_virt2real:
         /* switch to real mode... */
@@ -180,7 +181,7 @@ rfi_v2r_1:
         bv      0(%r2)
         nop
 
-        .text
+        __HEAD
         .align 128
 rfi_real2virt:
         rsm             PSW_SM_I,%r0
@@ -218,7 +219,7 @@ rfi_r2v_1:
 
 /************************ 64-bit real-mode calls ***********************/
 /* This is only usable in wide kernels right now and will probably stay so */
-        .text
+        __HEAD
         /* unsigned long real64_call_asm(unsigned long *sp,
          *              unsigned long *arg0p,
          *              unsigned long fn)
@@ -276,7 +277,7 @@ ENDPROC(real64_call_asm)
 
 #endif
 
-        .text
+        __HEAD
         /* http://lists.parisc-linux.org/hypermail/parisc-linux/10916.html
         **      GCC 3.3 and later has a new function in libgcc.a for
         **      comparing function pointers.
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 69b6eebc466e..ae509d8cd03f 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -17,6 +17,7 @@
 #include <asm/processor.h>
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 
         /* We fill the empty parts of the gateway page with
          * something that will kill the kernel or a
@@ -26,7 +27,7 @@
 
         .level          LEVEL
 
-        .text
+        __HEAD
 
         .import syscall_exit,code
         .import syscall_exit_rfi,code
@@ -636,7 +637,7 @@ END(sys_call_table64)
                 All light-weight-syscall atomic operations 
                 will use this set of locks 
         */
-        .section .data
+        .section .data, "aw"
         .align  PAGE_SIZE
 ENTRY(lws_lock_start)
         /* lws locks */
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 9dc6dc42f9cf..675f1d098f05 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -275,7 +275,7 @@ KERN_CRIT "                     ||     ||\n");
 
         /* Wot's wrong wif bein' racy? */
         if (current->thread.flags & PARISC_KERNEL_DEATH) {
-                printk(KERN_CRIT "%s() recursion detected.\n", __FUNCTION__);
+                printk(KERN_CRIT "%s() recursion detected.\n", __func__);
                 local_irq_enable();
                 while (1);
         }
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index aebf3c168871..e6f4b7a4b7e3 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -30,7 +30,7 @@
 /* #define DEBUG_UNALIGNED 1 */
 
 #ifdef DEBUG_UNALIGNED
-#define DPRINTF(fmt, args...) do { printk(KERN_DEBUG "%s:%d:%s ", __FILE__, __LINE__, __FUNCTION__ ); printk(KERN_DEBUG fmt, ##args ); } while (0)
+#define DPRINTF(fmt, args...) do { printk(KERN_DEBUG "%s:%d:%s ", __FILE__, __LINE__, __func__ ); printk(KERN_DEBUG fmt, ##args ); } while (0)
 #else
 #define DPRINTF(fmt, args...)
 #endif
@@ -460,7 +460,8 @@ void handle_unaligned(struct pt_regs *regs)
                         goto force_sigbus;
                 }
 
-                if (unaligned_count > 5 && jiffies - last_time > 5*HZ) {
+                if (unaligned_count > 5 &&
+                                time_after(jiffies, last_time + 5 * HZ)) {
                         unaligned_count = 0;
                         last_time = jiffies;
                 }
diff --git a/arch/parisc/lib/fixup.S b/arch/parisc/lib/fixup.S
index d172d4245cdc..4821ad6d5269 100644
--- a/arch/parisc/lib/fixup.S
+++ b/arch/parisc/lib/fixup.S
@@ -23,6 +23,7 @@
 #include <asm/assembly.h>
 #include <asm/errno.h>
 #include <linux/linkage.h>
+#include <linux/init.h>
 
 #ifdef CONFIG_SMP
         .macro  get_fault_ip t1 t2
@@ -55,7 +56,7 @@
 
         .level LEVEL
 
-        .text
+        __HEAD
         .section .fixup, "ax"
 
         /* get_user() fixups, store -EFAULT in r8, and 0 in r9 */
diff --git a/arch/parisc/lib/lusercopy.S b/arch/parisc/lib/lusercopy.S
index 1bd23ccec17b..b0d885350846 100644
--- a/arch/parisc/lib/lusercopy.S
+++ b/arch/parisc/lib/lusercopy.S
@@ -33,11 +33,12 @@
  */
 
 
-        .text
-        
 #include <asm/assembly.h>
 #include <asm/errno.h>
 #include <linux/linkage.h>
+#include <linux/init.h>
+
+        __HEAD
 
         /*
          * get_sr gets the appropriate space value into
diff --git a/arch/parisc/lib/memcpy.c b/arch/parisc/lib/memcpy.c
index d22042d33100..2d68431fc22e 100644
--- a/arch/parisc/lib/memcpy.c
+++ b/arch/parisc/lib/memcpy.c
@@ -91,7 +91,7 @@ DECLARE_PER_CPU(struct exception_data, exception_data);
 #define THRESHOLD       16
 
 #ifdef DEBUG_MEMCPY
-#define DPRINTF(fmt, args...) do { printk(KERN_DEBUG "%s:%d:%s ", __FILE__, __LINE__, __FUNCTION__ ); printk(KERN_DEBUG fmt, ##args ); } while (0)
+#define DPRINTF(fmt, args...) do { printk(KERN_DEBUG "%s:%d:%s ", __FILE__, __LINE__, __func__ ); printk(KERN_DEBUG fmt, ##args ); } while (0)
 #else
 #define DPRINTF(fmt, args...)
 #endif
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 1f012843150f..78fe252b92c3 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -555,8 +555,6 @@ void show_mem(void)
 
         printk(KERN_INFO "Mem-info:\n");
         show_free_areas();
-        printk(KERN_INFO "Free swap:     %6ldkB\n",
-                                nr_swap_pages<<(PAGE_SHIFT-10));
 #ifndef CONFIG_DISCONTIGMEM
         i = max_mapnr;
         while (i-- > 0) {
@@ -606,7 +604,7 @@ void show_mem(void)
                 int i, j;
 
                 for (i = 0; i < npmem_ranges; i++) {
-                        zl = node_zonelist(i);
+                        zl = node_zonelist(i, 0);
                         for (j = 0; j < MAX_NR_ZONES; j++) {
                                 struct zoneref *z;
                                 struct zone *zone;
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 05f955f8df35..bf5b6d7ed30f 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -94,6 +94,9 @@ unsigned long htab_hash_mask;
 int mmu_linear_psize = MMU_PAGE_4K;
 int mmu_virtual_psize = MMU_PAGE_4K;
 int mmu_vmalloc_psize = MMU_PAGE_4K;
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+int mmu_vmemmap_psize = MMU_PAGE_4K;
+#endif
 int mmu_io_psize = MMU_PAGE_4K;
 int mmu_kernel_ssize = MMU_SEGSIZE_256M;
 int mmu_highuser_ssize = MMU_SEGSIZE_256M;
@@ -387,11 +390,32 @@ static void __init htab_init_page_sizes(void)
         }
 #endif /* CONFIG_PPC_64K_PAGES */
 
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+        /* We try to use 16M pages for vmemmap if that is supported
+         * and we have at least 1G of RAM at boot
+         */
+        if (mmu_psize_defs[MMU_PAGE_16M].shift &&
+            lmb_phys_mem_size() >= 0x40000000)
+                mmu_vmemmap_psize = MMU_PAGE_16M;
+        else if (mmu_psize_defs[MMU_PAGE_64K].shift)
+                mmu_vmemmap_psize = MMU_PAGE_64K;
+        else
+                mmu_vmemmap_psize = MMU_PAGE_4K;
+#endif /* CONFIG_SPARSEMEM_VMEMMAP */
+
         printk(KERN_DEBUG "Page orders: linear mapping = %d, "
-               "virtual = %d, io = %d\n",
+               "virtual = %d, io = %d"
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+               ", vmemmap = %d"
+#endif
+               "\n",
                mmu_psize_defs[mmu_linear_psize].shift,
                mmu_psize_defs[mmu_virtual_psize].shift,
-               mmu_psize_defs[mmu_io_psize].shift);
+               mmu_psize_defs[mmu_io_psize].shift
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+               ,mmu_psize_defs[mmu_vmemmap_psize].shift
+#endif
+               );
 
 #ifdef CONFIG_HUGETLB_PAGE
         /* Init large page size. Currently, we pick 16M or 1M depending
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 1e52e97d7409..6ef63caca682 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -19,6 +19,8 @@
  *
  */
 
+#undef DEBUG
+
 #include <linux/signal.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
@@ -208,12 +210,12 @@ static int __meminit vmemmap_populated(unsigned long start, int page_size)
 }
 
 int __meminit vmemmap_populate(struct page *start_page,
-                                        unsigned long nr_pages, int node)
+                               unsigned long nr_pages, int node)
 {
         unsigned long mode_rw;
         unsigned long start = (unsigned long)start_page;
         unsigned long end = (unsigned long)(start_page + nr_pages);
-        unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
+        unsigned long page_size = 1 << mmu_psize_defs[mmu_vmemmap_psize].shift;
 
         mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
 
@@ -235,11 +237,11 @@ int __meminit vmemmap_populate(struct page *start_page,
                         start, p, __pa(p));
 
                 mapped = htab_bolt_mapping(start, start + page_size,
-                                        __pa(p), mode_rw, mmu_linear_psize,
+                                        __pa(p), mode_rw, mmu_vmemmap_psize,
                                         mmu_kernel_ssize);
                 BUG_ON(mapped < 0);
         }
 
         return 0;
 }
-#endif
+#endif /* CONFIG_SPARSEMEM_VMEMMAP */
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index cf8705e32d60..89497fb04280 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -28,7 +28,7 @@
 #include <asm/udbg.h>
 
 #ifdef DEBUG
-#define DBG(fmt...) udbg_printf(fmt)
+#define DBG(fmt...) printk(fmt)
 #else
 #define DBG pr_debug
 #endif
@@ -263,13 +263,19 @@ void slb_initialize(void)
         extern unsigned int *slb_miss_kernel_load_linear;
         extern unsigned int *slb_miss_kernel_load_io;
         extern unsigned int *slb_compare_rr_to_size;
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+        extern unsigned int *slb_miss_kernel_load_vmemmap;
+        unsigned long vmemmap_llp;
+#endif
 
         /* Prepare our SLB miss handler based on our page size */
         linear_llp = mmu_psize_defs[mmu_linear_psize].sllp;
         io_llp = mmu_psize_defs[mmu_io_psize].sllp;
         vmalloc_llp = mmu_psize_defs[mmu_vmalloc_psize].sllp;
         get_paca()->vmalloc_sllp = SLB_VSID_KERNEL | vmalloc_llp;
-
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+        vmemmap_llp = mmu_psize_defs[mmu_vmemmap_psize].sllp;
+#endif
         if (!slb_encoding_inited) {
                 slb_encoding_inited = 1;
                 patch_slb_encoding(slb_miss_kernel_load_linear,
@@ -281,6 +287,12 @@ void slb_initialize(void)
 
                 DBG("SLB: linear  LLP = %04lx\n", linear_llp);
                 DBG("SLB: io      LLP = %04lx\n", io_llp);
+
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+                patch_slb_encoding(slb_miss_kernel_load_vmemmap,
+                                   SLB_VSID_KERNEL | vmemmap_llp);
+                DBG("SLB: vmemmap LLP = %04lx\n", vmemmap_llp);
+#endif
         }
 
         get_paca()->stab_rr = SLB_NUM_BOLTED;
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 657f6b37e9df..bc44dc4b5c67 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -47,8 +47,7 @@ _GLOBAL(slb_allocate_realmode)
          * it to VSID 0, which is reserved as a bad VSID - one which
          * will never have any pages in it.  */
 
-        /* Check if hitting the linear mapping of the vmalloc/ioremap
-         * kernel space
+        /* Check if hitting the linear mapping or some other kernel space
         */
         bne     cr7,1f
 
@@ -62,7 +61,18 @@ BEGIN_FTR_SECTION
 END_FTR_SECTION_IFCLR(CPU_FTR_1T_SEGMENT)
         b       slb_finish_load_1T
 
-1:      /* vmalloc/ioremap mapping encoding bits, the "li" instructions below
+1:
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+        /* Check virtual memmap region. To be patches at kernel boot */
+        cmpldi  cr0,r9,0xf
+        bne     1f
+_GLOBAL(slb_miss_kernel_load_vmemmap)
+        li      r11,0
+        b       6f
+1:
+#endif /* CONFIG_SPARSEMEM_VMEMMAP */
+
+        /* vmalloc/ioremap mapping encoding bits, the "li" instructions below
          * will be patched by the kernel at boot
          */
 BEGIN_FTR_SECTION
diff --git a/arch/powerpc/platforms/cell/io-workarounds.c b/arch/powerpc/platforms/cell/io-workarounds.c
index 3b84e8be314c..b5f84e8f0899 100644
--- a/arch/powerpc/platforms/cell/io-workarounds.c
+++ b/arch/powerpc/platforms/cell/io-workarounds.c
@@ -118,7 +118,7 @@ static void iowa_##name at					\
 #undef DEF_PCI_AC_RET
 #undef DEF_PCI_AC_NORET
 
-static struct ppc_pci_io __initdata iowa_pci_io = {
+static const struct ppc_pci_io __devinitconst iowa_pci_io = {
 
 #define DEF_PCI_AC_RET(name, ret, at, al, space, aa)    .name = iowa_##name,
 #define DEF_PCI_AC_NORET(name, at, al, space, aa)       .name = iowa_##name,
@@ -146,7 +146,7 @@ static void __iomem *iowa_ioremap(unsigned long addr, unsigned long size,
 }
 
 /* Regist new bus to support workaround */
-void __init iowa_register_bus(struct pci_controller *phb,
+void __devinit iowa_register_bus(struct pci_controller *phb,
                         struct ppc_pci_io *ops,
                         int (*initfunc)(struct iowa_bus *, void *), void *data)
 {
@@ -173,7 +173,7 @@ void __init iowa_register_bus(struct pci_controller *phb,
 }
 
 /* enable IO workaround */
-void __init io_workaround_init(void)
+void __devinit io_workaround_init(void)
 {
         static int io_workaround_inited;
 
diff --git a/arch/powerpc/platforms/cell/io-workarounds.h b/arch/powerpc/platforms/cell/io-workarounds.h
index 79d8ed3d510f..6efc7782ebf2 100644
--- a/arch/powerpc/platforms/cell/io-workarounds.h
+++ b/arch/powerpc/platforms/cell/io-workarounds.h
@@ -31,9 +31,9 @@ struct iowa_bus {
         void   *private;
 };
 
-void __init io_workaround_init(void);
-void __init iowa_register_bus(struct pci_controller *, struct ppc_pci_io *,
-                              int (*)(struct iowa_bus *, void *), void *);
+void __devinit io_workaround_init(void);
+void __devinit iowa_register_bus(struct pci_controller *, struct ppc_pci_io *,
+                                 int (*)(struct iowa_bus *, void *), void *);
 struct iowa_bus *iowa_mem_find_bus(const PCI_IO_ADDR);
 struct iowa_bus *iowa_pio_find_bus(unsigned long);
 
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 80911a373400..c81341ff75b5 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -32,6 +32,7 @@
 #include <linux/marker.h>
 
 #include <asm/io.h>
+#include <asm/time.h>
 #include <asm/spu.h>
 #include <asm/spu_info.h>
 #include <asm/uaccess.h>
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 2e411f23462b..745dd51ec37f 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -659,7 +659,7 @@ static struct spu *find_victim(struct spu_context *ctx)
 
                         victim->stats.invol_ctx_switch++;
                         spu->stats.invol_ctx_switch++;
-                        if (test_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags))
+                        if (test_bit(SPU_SCHED_SPU_RUN, &victim->sched_flags))
                                 spu_add_to_rq(victim);
 
                         mutex_unlock(&victim->state_mutex);
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index dff0568e67ec..c93d1296cc0a 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -71,7 +71,7 @@ static ssize_t debug_input(struct file *file, const char __user *user_buf,
                         size_t user_len, loff_t * offset);
 static int debug_open(struct inode *inode, struct file *file);
 static int debug_close(struct inode *inode, struct file *file);
-static debug_info_t*  debug_info_create(char *name, int pages_per_area,
+static debug_info_t *debug_info_create(const char *name, int pages_per_area,
                         int nr_areas, int buf_size, mode_t mode);
 static void debug_info_get(debug_info_t *);
 static void debug_info_put(debug_info_t *);
@@ -234,8 +234,8 @@ fail_malloc_areas:
  */
 
 static debug_info_t*
-debug_info_alloc(char *name, int pages_per_area, int nr_areas, int buf_size,
-                int level, int mode)
+debug_info_alloc(const char *name, int pages_per_area, int nr_areas,
+                 int buf_size, int level, int mode)
 {
         debug_info_t* rc;
 
@@ -326,8 +326,8 @@ debug_info_free(debug_info_t* db_info){
  */
 
 static debug_info_t*
-debug_info_create(char *name, int pages_per_area, int nr_areas, int buf_size,
-                  mode_t mode)
+debug_info_create(const char *name, int pages_per_area, int nr_areas,
+                  int buf_size, mode_t mode)
 {
         debug_info_t* rc;
 
@@ -684,9 +684,9 @@ debug_close(struct inode *inode, struct file *file)
  * - Returns handle for debug area
  */
 
-debug_info_t *debug_register_mode(char *name, int pages_per_area, int nr_areas,
-                                  int buf_size, mode_t mode, uid_t uid,
-                                  gid_t gid)
+debug_info_t *debug_register_mode(const char *name, int pages_per_area,
+                                  int nr_areas, int buf_size, mode_t mode,
+                                  uid_t uid, gid_t gid)
 {
         debug_info_t *rc = NULL;
 
@@ -722,8 +722,8 @@ EXPORT_SYMBOL(debug_register_mode);
  * - returns handle for debug area
  */
 
-debug_info_t *debug_register(char *name, int pages_per_area, int nr_areas,
-                             int buf_size)
+debug_info_t *debug_register(const char *name, int pages_per_area,
+                             int nr_areas, int buf_size)
 {
         return debug_register_mode(name, pages_per_area, nr_areas, buf_size,
                                    S_IRUSR | S_IWUSR, 0, 0);
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index c59a86dca584..e7c5bfb7c755 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -25,6 +25,7 @@ int show_interrupts(struct seq_file *p, void *v)
         static const char *intrclass_names[] = { "EXT", "I/O", };
         int i = *(loff_t *) v, j;
 
+        get_online_cpus();
         if (i == 0) {
                 seq_puts(p, "           ");
                 for_each_online_cpu(j)
@@ -43,7 +44,7 @@ int show_interrupts(struct seq_file *p, void *v)
                 seq_putc(p, '\n');
 
         }
-
+        put_online_cpus();
         return 0;
 }
 
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 0aeb290060d9..1f4228948dc4 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -139,7 +139,6 @@ static void __smp_call_function_map(void (*func) (void *info), void *info,
         if (wait)
                 data.finished = CPU_MASK_NONE;
 
-        spin_lock(&call_lock);
         call_data = &data;
 
         for_each_cpu_mask(cpu, map)
@@ -151,7 +150,6 @@ static void __smp_call_function_map(void (*func) (void *info), void *info,
         if (wait)
                 while (!cpus_equal(map, data.finished))
                         cpu_relax();
-        spin_unlock(&call_lock);
 out:
         if (local) {
                 local_irq_disable();
@@ -177,11 +175,11 @@ int smp_call_function(void (*func) (void *info), void *info, int nonatomic,
 {
         cpumask_t map;
 
-        preempt_disable();
+        spin_lock(&call_lock);
         map = cpu_online_map;
         cpu_clear(smp_processor_id(), map);
         __smp_call_function_map(func, info, nonatomic, wait, map);
-        preempt_enable();
+        spin_unlock(&call_lock);
         return 0;
 }
 EXPORT_SYMBOL(smp_call_function);
@@ -202,10 +200,10 @@ EXPORT_SYMBOL(smp_call_function);
 int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
                              int nonatomic, int wait)
 {
-        preempt_disable();
+        spin_lock(&call_lock);
         __smp_call_function_map(func, info, nonatomic, wait,
                                 cpumask_of_cpu(cpu));
-        preempt_enable();
+        spin_unlock(&call_lock);
         return 0;
 }
 EXPORT_SYMBOL(smp_call_function_single);
@@ -228,10 +226,10 @@ EXPORT_SYMBOL(smp_call_function_single);
 int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info,
                            int wait)
 {
-        preempt_disable();
+        spin_lock(&call_lock);
         cpu_clear(smp_processor_id(), mask);
         __smp_call_function_map(func, info, 0, wait, mask);
-        preempt_enable();
+        spin_unlock(&call_lock);
         return 0;
 }
 EXPORT_SYMBOL(smp_call_function_mask);
@@ -592,7 +590,9 @@ int __cpuinit start_secondary(void *cpuvoid)
         pfault_init();
 
         /* Mark this cpu as online */
+        spin_lock(&call_lock);
         cpu_set(smp_processor_id(), cpu_online_map);
+        spin_unlock(&call_lock);
         /* Switch on interrupts */
         local_irq_enable();
         /* Print info about this processor */
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index beccacf907f3..ea2804808f39 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -27,19 +27,12 @@ struct memory_segment {
 
 static LIST_HEAD(mem_segs);
 
-static void __ref *vmem_alloc_pages(unsigned int order)
-{
-        if (slab_is_available())
-                return (void *)__get_free_pages(GFP_KERNEL, order);
-        return alloc_bootmem_pages((1 << order) * PAGE_SIZE);
-}
-
-static inline pud_t *vmem_pud_alloc(void)
+static pud_t *vmem_pud_alloc(void)
 {
         pud_t *pud = NULL;
 
 #ifdef CONFIG_64BIT
-        pud = vmem_alloc_pages(2);
+        pud = vmemmap_alloc_block(PAGE_SIZE * 4, 0);
         if (!pud)
                 return NULL;
         clear_table((unsigned long *) pud, _REGION3_ENTRY_EMPTY, PAGE_SIZE * 4);
@@ -47,12 +40,12 @@ static inline pud_t *vmem_pud_alloc(void)
         return pud;
 }
 
-static inline pmd_t *vmem_pmd_alloc(void)
+static pmd_t *vmem_pmd_alloc(void)
 {
         pmd_t *pmd = NULL;
 
 #ifdef CONFIG_64BIT
-        pmd = vmem_alloc_pages(2);
+        pmd = vmemmap_alloc_block(PAGE_SIZE * 4, 0);
         if (!pmd)
                 return NULL;
         clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE * 4);
@@ -60,7 +53,7 @@ static inline pmd_t *vmem_pmd_alloc(void)
         return pmd;
 }
 
-static pte_t __init_refok *vmem_pte_alloc(void)
+static pte_t __ref *vmem_pte_alloc(void)
 {
         pte_t *pte;
 
@@ -214,7 +207,7 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node)
                 if (pte_none(*pt_dir)) {
                         unsigned long new_page;
 
-                        new_page =__pa(vmem_alloc_pages(0));
+                        new_page =__pa(vmemmap_alloc_block(PAGE_SIZE, 0));
                         if (!new_page)
                                 goto out;
                         pte = pfn_pte(new_page >> PAGE_SHIFT, PAGE_KERNEL);
diff --git a/arch/sh/kernel/kgdb_stub.c b/arch/sh/kernel/kgdb_stub.c
index d453c3a1c79f..832641bbd47d 100644
--- a/arch/sh/kernel/kgdb_stub.c
+++ b/arch/sh/kernel/kgdb_stub.c
@@ -330,14 +330,6 @@ static char *ebin_to_mem(const char *buf, char *mem, int count)
         return mem;
 }
 
-/* Pack a hex byte */
-static char *pack_hex_byte(char *pkt, int byte)
-{
-        *pkt++ = hexchars[(byte >> 4) & 0xf];
-        *pkt++ = hexchars[(byte & 0xf)];
-        return pkt;
-}
-
 /* Scan for the start char '$', read the packet and check the checksum */
 static void get_packet(char *buffer, int buflen)
 {
diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc.c
index e995491c4436..3c6b49a53ae8 100644
--- a/arch/sparc/kernel/sys_sparc.c
+++ b/arch/sparc/kernel/sys_sparc.c
@@ -219,7 +219,7 @@ out:
         return err;
 }
 
-int sparc_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
+int sparc_mmap_check(unsigned long addr, unsigned long len)
 {
         if (ARCH_SUN4C_SUN4 &&
             (len > 0x20000000 ||
@@ -295,52 +295,14 @@ asmlinkage unsigned long sparc_mremap(unsigned long addr,
         unsigned long old_len, unsigned long new_len,
         unsigned long flags, unsigned long new_addr)
 {
-        struct vm_area_struct *vma;
         unsigned long ret = -EINVAL;
-        if (ARCH_SUN4C_SUN4) {
-                if (old_len > 0x20000000 || new_len > 0x20000000)
-                        goto out;
-                if (addr < 0xe0000000 && addr + old_len > 0x20000000)
-                        goto out;
-        }
-        if (old_len > TASK_SIZE - PAGE_SIZE ||
-            new_len > TASK_SIZE - PAGE_SIZE)
+
+        if (unlikely(sparc_mmap_check(addr, old_len)))
+                goto out;
+        if (unlikely(sparc_mmap_check(new_addr, new_len)))
                 goto out;
         down_write(&current->mm->mmap_sem);
-        if (flags & MREMAP_FIXED) {
-                if (ARCH_SUN4C_SUN4 &&
-                    new_addr < 0xe0000000 &&
-                    new_addr + new_len > 0x20000000)
-                        goto out_sem;
-                if (new_addr + new_len > TASK_SIZE - PAGE_SIZE)
-                        goto out_sem;
-        } else if ((ARCH_SUN4C_SUN4 && addr < 0xe0000000 &&
-                    addr + new_len > 0x20000000) ||
-                   addr + new_len > TASK_SIZE - PAGE_SIZE) {
-                unsigned long map_flags = 0;
-                struct file *file = NULL;
-
-                ret = -ENOMEM;
-                if (!(flags & MREMAP_MAYMOVE))
-                        goto out_sem;
-
-                vma = find_vma(current->mm, addr);
-                if (vma) {
-                        if (vma->vm_flags & VM_SHARED)
-                                map_flags |= MAP_SHARED;
-                        file = vma->vm_file;
-                }
-
-                new_addr = get_unmapped_area(file, addr, new_len,
-                                     vma ? vma->vm_pgoff : 0,
-                                     map_flags);
-                ret = new_addr;
-                if (new_addr & ~PAGE_MASK)
-                        goto out_sem;
-                flags |= MREMAP_FIXED;
-        }
         ret = do_mremap(addr, old_len, new_len, flags, new_addr);
-out_sem:
         up_write(&current->mm->mmap_sem);
 out:
         return ret;       
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index b9b785fd8b46..16689b2930db 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -46,7 +46,7 @@ __handle_user_windows:
                 wrpr                    %g0, RTRAP_PSTATE_IRQOFF, %pstate
                 ldx                     [%g6 + TI_FLAGS], %l0
 
-1:              andcc                   %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
+1:              andcc                   %l0, _TIF_SIGPENDING, %g0
                 be,pt                   %xcc, __handle_user_windows_continue
                  nop
                 mov                     %l5, %o1
@@ -86,7 +86,7 @@ __handle_perfctrs:
                  wrpr                   %g0, RTRAP_PSTATE, %pstate
                 wrpr                    %g0, RTRAP_PSTATE_IRQOFF, %pstate
                 ldx                     [%g6 + TI_FLAGS], %l0
-1:              andcc                   %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
+1:              andcc                   %l0, _TIF_SIGPENDING, %g0
 
                 be,pt                   %xcc, __handle_perfctrs_continue
                  sethi                  %hi(TSTATE_PEF), %o0
@@ -195,7 +195,7 @@ __handle_preemption_continue:
                  andcc                  %l1, %o0, %g0
                 andcc                   %l0, _TIF_NEED_RESCHED, %g0
                 bne,pn                  %xcc, __handle_preemption
-                 andcc                  %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
+                 andcc                  %l0, _TIF_SIGPENDING, %g0
                 bne,pn                  %xcc, __handle_signal
 __handle_signal_continue:
                  ldub                   [%g6 + TI_WSAVED], %o2
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index 2378482c2aab..6e4dc67d16af 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -247,7 +247,9 @@ static long _sigpause_common(old_sigset_t set)
 
         current->state = TASK_INTERRUPTIBLE;
         schedule();
-        set_thread_flag(TIF_RESTORE_SIGMASK);
+
+        set_restore_sigmask();
+
         return -ERESTARTNOHAND;
 }
 
@@ -537,7 +539,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
         } else
                 restart_syscall = 0;
 
-        if (test_thread_flag(TIF_RESTORE_SIGMASK))
+        if (current_thread_info()->status & TS_RESTORE_SIGMASK)
                 oldset = &current->saved_sigmask;
         else
                 oldset = &current->blocked;
@@ -566,13 +568,12 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
                         syscall_restart(orig_i0, regs, &ka.sa);
                 handle_signal(signr, &ka, &info, oldset, regs);
 
-                /* a signal was successfully delivered; the saved
+                /* A signal was successfully delivered; the saved
                  * sigmask will have been stored in the signal frame,
                  * and will be restored by sigreturn, so we can simply
-                 * clear the TIF_RESTORE_SIGMASK flag.
+                 * clear the TS_RESTORE_SIGMASK flag.
                  */
-                if (test_thread_flag(TIF_RESTORE_SIGMASK))
-                        clear_thread_flag(TIF_RESTORE_SIGMASK);
+                current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
                 return;
         }
         if (restart_syscall &&
@@ -591,17 +592,17 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
                 regs->tnpc -= 4;
         }
 
-        /* if there's no signal to deliver, we just put the saved sigmask
+        /* If there's no signal to deliver, we just put the saved sigmask
          * back
          */
-        if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-                clear_thread_flag(TIF_RESTORE_SIGMASK);
+        if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
+                current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
                 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
         }
 }
 
 void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
 {
-        if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+        if (thread_info_flags & _TIF_SIGPENDING)
                 do_signal(regs, orig_i0);
 }
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
index 3f19e9af3d1b..97cdd1bf4a10 100644
--- a/arch/sparc64/kernel/signal32.c
+++ b/arch/sparc64/kernel/signal32.c
@@ -788,13 +788,12 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
                         syscall_restart32(orig_i0, regs, &ka.sa);
                 handle_signal32(signr, &ka, &info, oldset, regs);
 
-                /* a signal was successfully delivered; the saved
+                /* A signal was successfully delivered; the saved
                  * sigmask will have been stored in the signal frame,
                  * and will be restored by sigreturn, so we can simply
-                 * clear the TIF_RESTORE_SIGMASK flag.
+                 * clear the TS_RESTORE_SIGMASK flag.
                  */
-                if (test_thread_flag(TIF_RESTORE_SIGMASK))
-                        clear_thread_flag(TIF_RESTORE_SIGMASK);
+                current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
                 return;
         }
         if (restart_syscall &&
@@ -813,11 +812,11 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
                 regs->tnpc -= 4;
         }
 
-        /* if there's no signal to deliver, we just put the saved sigmask
+        /* If there's no signal to deliver, we just put the saved sigmask
          * back
          */
-        if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
-                clear_thread_flag(TIF_RESTORE_SIGMASK);
+        if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
+                current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
                 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
         }
 }
diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c
index 0dbc941f130e..ac1bff58c1ac 100644
--- a/arch/sparc64/kernel/sys_sparc.c
+++ b/arch/sparc64/kernel/sys_sparc.c
@@ -542,8 +542,7 @@ asmlinkage long sparc64_personality(unsigned long personality)
         return ret;
 }
 
-int sparc64_mmap_check(unsigned long addr, unsigned long len,
-                unsigned long flags)
+int sparc64_mmap_check(unsigned long addr, unsigned long len)
 {
         if (test_thread_flag(TIF_32BIT)) {
                 if (len >= STACK_TOP32)
@@ -609,46 +608,19 @@ asmlinkage unsigned long sys64_mremap(unsigned long addr,
         unsigned long old_len, unsigned long new_len,
         unsigned long flags, unsigned long new_addr)
 {
-        struct vm_area_struct *vma;
         unsigned long ret = -EINVAL;
 
         if (test_thread_flag(TIF_32BIT))
                 goto out;
         if (unlikely(new_len >= VA_EXCLUDE_START))
                 goto out;
-        if (unlikely(invalid_64bit_range(addr, old_len)))
+        if (unlikely(sparc64_mmap_check(addr, old_len)))
+                goto out;
+        if (unlikely(sparc64_mmap_check(new_addr, new_len)))
                 goto out;
 
         down_write(&current->mm->mmap_sem);
-        if (flags & MREMAP_FIXED) {
-                if (invalid_64bit_range(new_addr, new_len))
-                        goto out_sem;
-        } else if (invalid_64bit_range(addr, new_len)) {
-                unsigned long map_flags = 0;
-                struct file *file = NULL;
-
-                ret = -ENOMEM;
-                if (!(flags & MREMAP_MAYMOVE))
-                        goto out_sem;
-
-                vma = find_vma(current->mm, addr);
-                if (vma) {
-                        if (vma->vm_flags & VM_SHARED)
-                                map_flags |= MAP_SHARED;
-                        file = vma->vm_file;
-                }
-
-                /* MREMAP_FIXED checked above. */
-                new_addr = get_unmapped_area(file, addr, new_len,
-                                    vma ? vma->vm_pgoff : 0,
-                                    map_flags);
-                ret = new_addr;
-                if (new_addr & ~PAGE_MASK)
-                        goto out_sem;
-                flags |= MREMAP_FIXED;
-        }
         ret = do_mremap(addr, old_len, new_len, flags, new_addr);
-out_sem:
         up_write(&current->mm->mmap_sem);
 out:
         return ret;       
diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c
index 1aa4288125f2..ba5bd626b39e 100644
--- a/arch/sparc64/kernel/sys_sparc32.c
+++ b/arch/sparc64/kernel/sys_sparc32.c
@@ -867,44 +867,15 @@ asmlinkage unsigned long sys32_mremap(unsigned long addr,
         unsigned long old_len, unsigned long new_len,
         unsigned long flags, u32 __new_addr)
 {
-        struct vm_area_struct *vma;
         unsigned long ret = -EINVAL;
         unsigned long new_addr = __new_addr;
 
-        if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
+        if (unlikely(sparc64_mmap_check(addr, old_len)))
                 goto out;
-        if (addr > STACK_TOP32 - old_len)
+        if (unlikely(sparc64_mmap_check(new_addr, new_len)))
                 goto out;
         down_write(&current->mm->mmap_sem);
-        if (flags & MREMAP_FIXED) {
-                if (new_addr > STACK_TOP32 - new_len)
-                        goto out_sem;
-        } else if (addr > STACK_TOP32 - new_len) {
-                unsigned long map_flags = 0;
-                struct file *file = NULL;
-
-                ret = -ENOMEM;
-                if (!(flags & MREMAP_MAYMOVE))
-                        goto out_sem;
-
-                vma = find_vma(current->mm, addr);
-                if (vma) {
-                        if (vma->vm_flags & VM_SHARED)
-                                map_flags |= MAP_SHARED;
-                        file = vma->vm_file;
-                }
-
-                /* MREMAP_FIXED checked above. */
-                new_addr = get_unmapped_area(file, addr, new_len,
-                                    vma ? vma->vm_pgoff : 0,
-                                    map_flags);
-                ret = new_addr;
-                if (new_addr & ~PAGE_MASK)
-                        goto out_sem;
-                flags |= MREMAP_FIXED;
-        }
         ret = do_mremap(addr, old_len, new_len, flags, new_addr);
-out_sem:
         up_write(&current->mm->mmap_sem);
 out:
         return ret;       
diff --git a/arch/um/Kconfig.char b/arch/um/Kconfig.char
index 3a4b396d7979..1b238ebae6b3 100644
--- a/arch/um/Kconfig.char
+++ b/arch/um/Kconfig.char
@@ -145,14 +145,14 @@ config LEGACY_PTYS
           systems, it is safe to say N.
 
 config RAW_DRIVER
-        tristate "RAW driver (/dev/raw/rawN) (OBSOLETE)"
+        tristate "RAW driver (/dev/raw/rawN)"
+        depends on BLOCK
         help
           The raw driver permits block devices to be bound to /dev/raw/rawN.
           Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.
           See the raw(8) manpage for more details.
 
-          The raw driver is deprecated and will be removed soon.
-          Applications should simply open the device (eg /dev/hda1)
+          Applications should preferably open the device (eg /dev/hda1)
           with the O_DIRECT flag.
 
 config MAX_RAW_DEVS
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c
index 025764089ac8..cfeb3f4a44af 100644
--- a/arch/um/drivers/chan_user.c
+++ b/arch/um/drivers/chan_user.c
@@ -11,6 +11,7 @@
 #include <termios.h>
 #include <sys/ioctl.h>
 #include "chan_user.h"
+#include "kern_constants.h"
 #include "os.h"
 #include "um_malloc.h"
 #include "user.h"
diff --git a/arch/um/drivers/cow_sys.h b/arch/um/drivers/cow_sys.h
index ca8c9e11a39b..f5701fd2ef90 100644
--- a/arch/um/drivers/cow_sys.h
+++ b/arch/um/drivers/cow_sys.h
@@ -8,7 +8,7 @@
 
 static inline void *cow_malloc(int size)
 {
-        return kmalloc(size, UM_GFP_KERNEL);
+        return uml_kmalloc(size, UM_GFP_KERNEL);
 }
 
 static inline void cow_free(void *ptr)
diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c
index f23c109a055c..f8e85e0bdace 100644
--- a/arch/um/drivers/daemon_user.c
+++ b/arch/um/drivers/daemon_user.c
@@ -34,7 +34,7 @@ static struct sockaddr_un *new_addr(void *name, int len)
 {
         struct sockaddr_un *sun;
 
-        sun = kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
+        sun = uml_kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
         if (sun == NULL) {
                 printk(UM_KERN_ERR "new_addr: allocation of sockaddr_un "
                        "failed\n");
@@ -83,7 +83,7 @@ static int connect_to_switch(struct daemon_data *pri)
                 goto out_close;
         }
 
-        sun = kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
+        sun = uml_kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
         if (sun == NULL) {
                 printk(UM_KERN_ERR "new_addr: allocation of sockaddr_un "
                        "failed\n");
diff --git a/arch/um/drivers/fd.c b/arch/um/drivers/fd.c
index 0a2bb5b64b82..f5a981a16240 100644
--- a/arch/um/drivers/fd.c
+++ b/arch/um/drivers/fd.c
@@ -40,7 +40,7 @@ static void *fd_init(char *str, int device, const struct chan_opts *opts)
                 return NULL;
         }
 
-        data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
+        data = uml_kmalloc(sizeof(*data), UM_GFP_KERNEL);
         if (data == NULL)
                 return NULL;
 
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index ff1b22b69e9c..368219cc2366 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -154,7 +154,7 @@ static int hostaudio_ioctl(struct inode *inode, struct file *file,
         case SNDCTL_DSP_SUBDIVIDE:
         case SNDCTL_DSP_SETFRAGMENT:
                 if (get_user(data, (int __user *) arg))
-                        return EFAULT;
+                        return -EFAULT;
                 break;
         default:
                 break;
diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c
index 5f647d7a7292..ee19e91568a2 100644
--- a/arch/um/drivers/mcast_user.c
+++ b/arch/um/drivers/mcast_user.c
@@ -15,6 +15,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <netinet/in.h>
+#include "kern_constants.h"
 #include "mcast.h"
 #include "net_user.h"
 #include "um_malloc.h"
@@ -24,7 +25,7 @@ static struct sockaddr_in *new_addr(char *addr, unsigned short port)
 {
         struct sockaddr_in *sin;
 
-        sin = kmalloc(sizeof(struct sockaddr_in), UM_GFP_KERNEL);
+        sin = uml_kmalloc(sizeof(struct sockaddr_in), UM_GFP_KERNEL);
         if (sin == NULL) {
                 printk(UM_KERN_ERR "new_addr: allocation of sockaddr_in "
                        "failed\n");
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index abf2653f5517..9415dd9e63ef 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -222,7 +222,7 @@ static void change(char *dev, char *what, unsigned char *addr,
                 netmask[2], netmask[3]);
 
         output_len = UM_KERN_PAGE_SIZE;
-        output = kmalloc(output_len, UM_GFP_KERNEL);
+        output = uml_kmalloc(output_len, UM_GFP_KERNEL);
         if (output == NULL)
                 printk(UM_KERN_ERR "change : failed to allocate output "
                        "buffer\n");
diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c
index d269ca387f10..b49bf56a56aa 100644
--- a/arch/um/drivers/port_user.c
+++ b/arch/um/drivers/port_user.c
@@ -47,7 +47,7 @@ static void *port_init(char *str, int device, const struct chan_opts *opts)
         if (kern_data == NULL)
                 return NULL;
 
-        data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
+        data = uml_kmalloc(sizeof(*data), UM_GFP_KERNEL);
         if (data == NULL)
                 goto err;
 
diff --git a/arch/um/drivers/pty.c b/arch/um/drivers/pty.c
index 49c79dda6046..1113911dcb2b 100644
--- a/arch/um/drivers/pty.c
+++ b/arch/um/drivers/pty.c
@@ -29,7 +29,7 @@ static void *pty_chan_init(char *str, int device, const struct chan_opts *opts)
 {
         struct pty_chan *data;
 
-        data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
+        data = uml_kmalloc(sizeof(*data), UM_GFP_KERNEL);
         if (data == NULL)
                 return NULL;
 
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index 71f0959c1535..4949044773ba 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005 Jeff Dike <jdike@addtoit.com> */
+/* Copyright (C) 2005 - 2008 Jeff Dike <jdike@{linux.intel,addtoit}.com> */
+
 /* Much of this ripped from drivers/char/hw_random.c, see there for other
  * copyright.
  *
@@ -8,16 +9,18 @@
 #include <linux/sched.h>
 #include <linux/module.h>
 #include <linux/fs.h>
+#include <linux/interrupt.h>
 #include <linux/miscdevice.h>
 #include <linux/delay.h>
 #include <asm/uaccess.h>
+#include "irq_kern.h"
 #include "os.h"
 
 /*
  * core module and version information
  */
 #define RNG_VERSION "1.0.0"
-#define RNG_MODULE_NAME "random"
+#define RNG_MODULE_NAME "hw_random"
 
 #define RNG_MISCDEV_MINOR               183 /* official */
 
@@ -26,47 +29,67 @@
  * protects against a module being loaded twice at the same time.
  */
 static int random_fd = -1;
+static DECLARE_WAIT_QUEUE_HEAD(host_read_wait);
 
 static int rng_dev_open (struct inode *inode, struct file *filp)
 {
         /* enforce read-only access to this chrdev */
         if ((filp->f_mode & FMODE_READ) == 0)
                 return -EINVAL;
-        if (filp->f_mode & FMODE_WRITE)
+        if ((filp->f_mode & FMODE_WRITE) != 0)
                 return -EINVAL;
 
         return 0;
 }
 
+static atomic_t host_sleep_count = ATOMIC_INIT(0);
+
 static ssize_t rng_dev_read (struct file *filp, char __user *buf, size_t size,
-                             loff_t * offp)
+                             loff_t *offp)
 {
-        u32 data;
-        int n, ret = 0, have_data;
-
-        while(size){
-                n = os_read_file(random_fd, &data, sizeof(data));
-                if(n > 0){
-                        have_data = n;
-                        while (have_data && size) {
-                                if (put_user((u8)data, buf++)) {
-                                        ret = ret ? : -EFAULT;
-                                        break;
-                                }
-                                size--;
-                                ret++;
-                                have_data--;
-                                data>>=8;
-                        }
-                }
-                else if(n == -EAGAIN){
-                        if (filp->f_flags & O_NONBLOCK)
-                                return ret ? : -EAGAIN;
-
-                        if(need_resched())
-                                schedule_timeout_interruptible(1);
-                }
-                else return n;
+        u32 data;
+        int n, ret = 0, have_data;
+
+        while (size) {
+                n = os_read_file(random_fd, &data, sizeof(data));
+                if (n > 0) {
+                        have_data = n;
+                        while (have_data && size) {
+                                if (put_user((u8) data, buf++)) {
+                                        ret = ret ? : -EFAULT;
+                                        break;
+                                }
+                                size--;
+                                ret++;
+                                have_data--;
+                                data >>= 8;
+                        }
+                }
+                else if (n == -EAGAIN) {
+                        DECLARE_WAITQUEUE(wait, current);
+
+                        if (filp->f_flags & O_NONBLOCK)
+                                return ret ? : -EAGAIN;
+
+                        atomic_inc(&host_sleep_count);
+                        reactivate_fd(random_fd, RANDOM_IRQ);
+                        add_sigio_fd(random_fd);
+
+                        add_wait_queue(&host_read_wait, &wait);
+                        set_task_state(current, TASK_INTERRUPTIBLE);
+
+                        schedule();
+                        set_task_state(current, TASK_RUNNING);
+                        remove_wait_queue(&host_read_wait, &wait);
+
+                        if (atomic_dec_and_test(&host_sleep_count)) {
+                                ignore_sigio_fd(random_fd);
+                                deactivate_fd(random_fd, RANDOM_IRQ);
+                        }
+                }
+                else
+                        return n;
+
                 if (signal_pending (current))
                         return ret ? : -ERESTARTSYS;
         }
@@ -86,6 +109,13 @@ static struct miscdevice rng_miscdev = {
         &rng_chrdev_ops,
 };
 
+static irqreturn_t random_interrupt(int irq, void *data)
+{
+        wake_up(&host_read_wait);
+
+        return IRQ_HANDLED;
+}
+
 /*
  * rng_init - initialize RNG module
  */
@@ -93,28 +123,33 @@ static int __init rng_init (void)
 {
         int err;
 
-        err = os_open_file("/dev/random", of_read(OPENFLAGS()), 0);
-        if(err < 0)
-                goto out;
+        err = os_open_file("/dev/random", of_read(OPENFLAGS()), 0);
+        if (err < 0)
+                goto out;
 
-        random_fd = err;
+        random_fd = err;
 
-        err = os_set_fd_block(random_fd, 0);
-        if(err)
+        err = um_request_irq(RANDOM_IRQ, random_fd, IRQ_READ, random_interrupt,
+                             IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "random",
+                             NULL);
+        if (err)
                 goto err_out_cleanup_hw;
 
+        sigio_broken(random_fd, 1);
+
         err = misc_register (&rng_miscdev);
         if (err) {
-                printk (KERN_ERR RNG_MODULE_NAME ": misc device register failed\n");
+                printk (KERN_ERR RNG_MODULE_NAME ": misc device register "
+                        "failed\n");
                 goto err_out_cleanup_hw;
         }
+out:
+        return err;
 
- out:
-        return err;
-
- err_out_cleanup_hw:
-        random_fd = -1;
-        goto out;
+err_out_cleanup_hw:
+        os_close_file(random_fd);
+        random_fd = -1;
+        goto out;
 }
 
 /*
@@ -122,6 +157,7 @@ static int __init rng_init (void)
  */
 static void __exit rng_cleanup (void)
 {
+        os_close_file(random_fd);
         misc_deregister (&rng_miscdev);
 }
 
diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c
index 8b80505a3fb0..a1c2d2c98a94 100644
--- a/arch/um/drivers/slip_user.c
+++ b/arch/um/drivers/slip_user.c
@@ -96,7 +96,7 @@ static int slip_tramp(char **argv, int fd)
         pid = err;
 
         output_len = UM_KERN_PAGE_SIZE;
-        output = kmalloc(output_len, UM_GFP_KERNEL);
+        output = uml_kmalloc(output_len, UM_GFP_KERNEL);
         if (output == NULL) {
                 printk(UM_KERN_ERR "slip_tramp : failed to allocate output "
                        "buffer\n");
diff --git a/arch/um/drivers/tty.c b/arch/um/drivers/tty.c
index c930fedc5172..495858a090e4 100644
--- a/arch/um/drivers/tty.c
+++ b/arch/um/drivers/tty.c
@@ -29,7 +29,7 @@ static void *tty_chan_init(char *str, int device, const struct chan_opts *opts)
         }
         str++;
 
-        data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
+        data = uml_kmalloc(sizeof(*data), UM_GFP_KERNEL);
         if (data == NULL)
                 return NULL;
         *data = ((struct tty_chan) { .dev       = str,
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 5e45e39a8a8d..44ad1607be2d 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1178,8 +1178,8 @@ static void cowify_bitmap(__u64 io_offset, int length, unsigned long *cow_mask,
          * by one word.  Thanks to Lynn Kerby for the fix and James McMechan
          * for the original diagnosis.
          */
-        if(*cow_offset == ((bitmap_len + sizeof(unsigned long) - 1) /
-                           sizeof(unsigned long) - 1))
+        if (*cow_offset == (DIV_ROUND_UP(bitmap_len,
+                                         sizeof(unsigned long)) - 1))
                 (*cow_offset)--;
 
         bitmap_words[0] = bitmap[*cow_offset];
diff --git a/arch/um/drivers/xterm.c b/arch/um/drivers/xterm.c
index 8a1c18a9b240..da2caa5a21ef 100644
--- a/arch/um/drivers/xterm.c
+++ b/arch/um/drivers/xterm.c
@@ -30,7 +30,7 @@ static void *xterm_init(char *str, int device, const struct chan_opts *opts)
 {
         struct xterm_chan *data;
 
-        data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
+        data = uml_kmalloc(sizeof(*data), UM_GFP_KERNEL);
         if (data == NULL)
                 return NULL;
         *data = ((struct xterm_chan) { .pid             = -1,
diff --git a/arch/um/include/as-layout.h b/arch/um/include/as-layout.h
index cac542d8ff70..58e852dfb0ce 100644
--- a/arch/um/include/as-layout.h
+++ b/arch/um/include/as-layout.h
@@ -23,16 +23,16 @@
  */
 
 #ifdef __ASSEMBLY__
-#define _AC(X, Y)       (Y)
+#define _UML_AC(X, Y)   (Y)
 #else
-#define __AC(X, Y)      (X (Y))
-#define _AC(X, Y)       __AC(X, Y)
+#define __UML_AC(X, Y)  (X(Y))
+#define _UML_AC(X, Y)   __UML_AC(X, Y)
 #endif
 
-#define STUB_START _AC(, 0x100000)
-#define STUB_CODE _AC((unsigned long), STUB_START)
-#define STUB_DATA _AC((unsigned long), STUB_CODE + UM_KERN_PAGE_SIZE)
-#define STUB_END _AC((unsigned long), STUB_DATA + UM_KERN_PAGE_SIZE)
+#define STUB_START _UML_AC(, 0x100000)
+#define STUB_CODE _UML_AC((unsigned long), STUB_START)
+#define STUB_DATA _UML_AC((unsigned long), STUB_CODE + UM_KERN_PAGE_SIZE)
+#define STUB_END _UML_AC((unsigned long), STUB_DATA + UM_KERN_PAGE_SIZE)
 
 #ifndef __ASSEMBLY__
 
diff --git a/arch/um/include/line.h b/arch/um/include/line.h
index 979b73e6352d..311a0d3d93af 100644
--- a/arch/um/include/line.h
+++ b/arch/um/include/line.h
@@ -58,11 +58,11 @@ struct line {
 };
 
 #define LINE_INIT(str, d) \
-        { .count_lock = SPIN_LOCK_UNLOCKED, \
+        { .count_lock = __SPIN_LOCK_UNLOCKED((str).count_lock), \
           .init_str =   str,    \
           .init_pri =   INIT_STATIC, \
           .valid =      1, \
-          .lock =       SPIN_LOCK_UNLOCKED, \
+          .lock =       __SPIN_LOCK_UNLOCKED((str).lock), \
           .driver =     d }
 
 extern void line_close(struct tty_struct *tty, struct file * filp);
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 32c799e3a495..e2716ac8889a 100644
--- a/arch/um/include/os.h
+++ b/arch/um/include/os.h
@@ -290,6 +290,7 @@ extern void os_set_ioignore(void);
 extern int add_sigio_fd(int fd);
 extern int ignore_sigio_fd(int fd);
 extern void maybe_sigio_broken(int fd, int read);
+extern void sigio_broken(int fd, int read);
 
 /* sys-x86_64/prctl.c */
 extern int os_arch_prctl(int pid, int code, unsigned long *addr);
diff --git a/arch/um/include/process.h b/arch/um/include/process.h
index 5af9157ff54f..bb873a51262e 100644
--- a/arch/um/include/process.h
+++ b/arch/um/include/process.h
@@ -1,5 +1,5 @@
 /* 
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
@@ -8,18 +8,10 @@
 
 #include <signal.h>
 
-extern void sig_handler(int sig, struct sigcontext sc);
-extern void alarm_handler(int sig, struct sigcontext sc);
+/* Copied from linux/compiler-gcc.h since we can't include it directly */
+#define barrier() __asm__ __volatile__("": : :"memory")
 
-#endif
+extern void sig_handler(int sig, struct sigcontext *sc);
+extern void alarm_handler(int sig, struct sigcontext *sc);
 
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+#endif
diff --git a/arch/um/include/skas_ptrace.h b/arch/um/include/skas_ptrace.h
index cd2327d09c8d..3d31bbacd016 100644
--- a/arch/um/include/skas_ptrace.h
+++ b/arch/um/include/skas_ptrace.h
@@ -1,5 +1,5 @@
 /* 
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
@@ -12,14 +12,3 @@
 #include "sysdep/skas_ptrace.h"
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/sysdep-i386/ptrace_user.h b/arch/um/include/sysdep-i386/ptrace_user.h
index 75650723c38f..ef56247e4143 100644
--- a/arch/um/include/sysdep-i386/ptrace_user.h
+++ b/arch/um/include/sysdep-i386/ptrace_user.h
@@ -41,38 +41,10 @@
 #define PT_SP_OFFSET PT_OFFSET(UESP)
 #define PT_SP(regs) ((regs)[UESP])
 
-#define FP_SIZE ((HOST_XFP_SIZE > HOST_FP_SIZE) ? HOST_XFP_SIZE : HOST_FP_SIZE)
+#define FP_SIZE ((HOST_FPX_SIZE > HOST_FP_SIZE) ? HOST_FPX_SIZE : HOST_FP_SIZE)
 
 #ifndef FRAME_SIZE
 #define FRAME_SIZE (17)
 #endif
-#define FRAME_SIZE_OFFSET (FRAME_SIZE * sizeof(unsigned long))
-
-#define FP_FRAME_SIZE (27)
-#define FPX_FRAME_SIZE (128)
-
-#ifdef PTRACE_GETREGS
-#define UM_HAVE_GETREGS
-#endif
-
-#ifdef PTRACE_SETREGS
-#define UM_HAVE_SETREGS
-#endif
-
-#ifdef PTRACE_GETFPREGS
-#define UM_HAVE_GETFPREGS
-#endif
-
-#ifdef PTRACE_SETFPREGS
-#define UM_HAVE_SETFPREGS
-#endif
-
-#ifdef PTRACE_GETFPXREGS
-#define UM_HAVE_GETFPXREGS
-#endif
-
-#ifdef PTRACE_SETFPXREGS
-#define UM_HAVE_SETFPXREGS
-#endif
 
 #endif
diff --git a/arch/um/include/sysdep-i386/sigcontext.h b/arch/um/include/sysdep-i386/sigcontext.h
index 67e77122aa45..f583c87111a0 100644
--- a/arch/um/include/sysdep-i386/sigcontext.h
+++ b/arch/um/include/sysdep-i386/sigcontext.h
@@ -10,7 +10,7 @@
 
 #define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
 
-#define GET_FAULTINFO_FROM_SC(fi,sc) \
+#define GET_FAULTINFO_FROM_SC(fi, sc) \
         { \
                 (fi).cr2 = SC_CR2(sc); \
                 (fi).error_code = SC_ERR(sc); \
diff --git a/arch/um/include/sysdep-x86_64/ptrace_user.h b/arch/um/include/sysdep-x86_64/ptrace_user.h
index 45c0bd881cb3..4dbccdb58f48 100644
--- a/arch/um/include/sysdep-x86_64/ptrace_user.h
+++ b/arch/um/include/sysdep-x86_64/ptrace_user.h
@@ -48,7 +48,8 @@
 #define PT_ORIG_RAX_OFFSET (ORIG_RAX)
 #define PT_ORIG_RAX(regs) ((regs)[PT_INDEX(ORIG_RAX)])
 
-/* x86_64 FC3 doesn't define this in /usr/include/linux/ptrace.h even though
+/*
+ * x86_64 FC3 doesn't define this in /usr/include/linux/ptrace.h even though
  * it's defined in the kernel's include/linux/ptrace.h. Additionally, use the
  * 2.4 name and value for 2.4 host compatibility.
  */
@@ -56,7 +57,8 @@
 #define PTRACE_OLDSETOPTIONS 21
 #endif
 
-/* These are before the system call, so the system call number is RAX
+/*
+ * These are before the system call, so the system call number is RAX
  * rather than ORIG_RAX, and arg4 is R10 rather than RCX
  */
 #define REGS_SYSCALL_NR PT_INDEX(RAX)
@@ -73,14 +75,3 @@
 #define FP_SIZE (HOST_FP_SIZE)
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/um_malloc.h b/arch/um/include/um_malloc.h
index 0ad17cb83d96..c554d706d106 100644
--- a/arch/um/include/um_malloc.h
+++ b/arch/um/include/um_malloc.h
@@ -8,15 +8,12 @@
 
 #include "kern_constants.h"
 
-extern void *__kmalloc(int size, int flags);
-static inline void *kmalloc(int size, int flags)
-{
-        return __kmalloc(size, flags);
-}
-
+extern void *uml_kmalloc(int size, int flags);
 extern void kfree(const void *ptr);
 
 extern void *vmalloc(unsigned long size);
 extern void vfree(void *ptr);
 
 #endif /* __UM_MALLOC_H__ */
+
+
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index 26090b7f323e..9975e1ab44fb 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -1,4 +1,5 @@
 #include <asm-generic/vmlinux.lds.h>
+#include <asm/page.h>
 
 OUTPUT_FORMAT(ELF_FORMAT)
 OUTPUT_ARCH(ELF_ARCH)
@@ -21,7 +22,7 @@ SECTIONS
         _einittext = .;
   }
 
-  . = ALIGN(4096);
+  . = ALIGN(PAGE_SIZE);
 
   /* Read-only sections, merged into text segment: */
   .hash           : { *(.hash) }
@@ -68,9 +69,9 @@ SECTIONS
     /* .gnu.warning sections are handled specially by elf32.em.  */
     *(.gnu.warning)
 
-    . = ALIGN(4096);
+    . = ALIGN(PAGE_SIZE);
   } =0x90909090
-  . = ALIGN(4096);
+  . = ALIGN(PAGE_SIZE);
   .syscall_stub : {
         __syscall_stub_start = .;
         *(.__syscall_stub*)
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 2eea1ff235e6..b0ee64622ff7 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -375,3 +375,8 @@ pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
         return pmd;
 }
 #endif
+
+void *uml_kmalloc(int size, int flags)
+{
+        return kmalloc(size, flags);
+}
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
index 0d0cea2ac98d..c3e2f369c33c 100644
--- a/arch/um/kernel/time.c
+++ b/arch/um/kernel/time.c
@@ -75,7 +75,7 @@ static irqreturn_t um_timer(int irq, void *dev)
 
 static cycle_t itimer_read(void)
 {
-        return os_nsecs();
+        return os_nsecs() / 1000;
 }
 
 static struct clocksource itimer_clocksource = {
@@ -83,7 +83,7 @@ static struct clocksource itimer_clocksource = {
         .rating         = 300,
         .read           = itimer_read,
         .mask           = CLOCKSOURCE_MASK(64),
-        .mult           = 1,
+        .mult           = 1000,
         .shift          = 0,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 };
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 56deed623446..9db85b2ce698 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -150,7 +150,7 @@ __uml_setup("root=", uml_root_setup,
 static int __init no_skas_debug_setup(char *line, int *add)
 {
         printf("'debug' is not necessary to gdb UML in skas mode - run \n");
-        printf("'gdb linux'");
+        printf("'gdb linux'\n");
 
         return 0;
 }
@@ -258,6 +258,7 @@ int __init linux_main(int argc, char **argv)
 {
         unsigned long avail, diff;
         unsigned long virtmem_size, max_physmem;
+        unsigned long stack;
         unsigned int i;
         int add;
         char * mode;
@@ -348,7 +349,9 @@ int __init linux_main(int argc, char **argv)
         }
 
         virtmem_size = physmem_size;
-        avail = TASK_SIZE - start_vm;
+        stack = (unsigned long) argv;
+        stack &= ~(1024 * 1024 - 1);
+        avail = stack - start_vm;
         if (physmem_size > avail)
                 virtmem_size = avail;
         end_vm = start_vm + virtmem_size;
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 5828c1d54505..11b835248b86 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -1,4 +1,5 @@
 #include <asm-generic/vmlinux.lds.h>
+#include <asm/page.h>
 
 OUTPUT_FORMAT(ELF_FORMAT)
 OUTPUT_ARCH(ELF_ARCH)
@@ -26,7 +27,7 @@ SECTIONS
         INIT_TEXT
         _einittext = .;
   }
-  . = ALIGN(4096);
+  . = ALIGN(PAGE_SIZE);
 
   .text      :
   {
@@ -39,7 +40,7 @@ SECTIONS
     *(.gnu.linkonce.t*)
   }
 
-  . = ALIGN(4096);
+  . = ALIGN(PAGE_SIZE);
   .syscall_stub : {
         __syscall_stub_start = .;
         *(.__syscall_stub*)
@@ -79,7 +80,7 @@ SECTIONS
   .sdata     : { *(.sdata) }
   _edata  =  .;
   PROVIDE (edata = .);
-  . = ALIGN(0x1000);
+  . = ALIGN(PAGE_SIZE);
   .sbss      :
   {
    __bss_start = .;
diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c
index 6fb0b174f538..cc72cb2c1af6 100644
--- a/arch/um/os-Linux/drivers/ethertap_user.c
+++ b/arch/um/os-Linux/drivers/ethertap_user.c
@@ -52,7 +52,7 @@ static void etap_change(int op, unsigned char *addr, unsigned char *netmask,
                 return;
         }
 
-        output = kmalloc(UM_KERN_PAGE_SIZE, UM_GFP_KERNEL);
+        output = uml_kmalloc(UM_KERN_PAGE_SIZE, UM_GFP_KERNEL);
         if (output == NULL)
                 printk(UM_KERN_ERR "etap_change : Failed to allocate output "
                        "buffer\n");
@@ -165,7 +165,7 @@ static int etap_open(void *data)
         err = etap_tramp(pri->dev_name, pri->gate_addr, control_fds[0],
                          control_fds[1], data_fds[0], data_fds[1]);
         output_len = UM_KERN_PAGE_SIZE;
-        output = kmalloc(output_len, UM_GFP_KERNEL);
+        output = uml_kmalloc(output_len, UM_GFP_KERNEL);
         read_output(control_fds[0], output, output_len);
 
         if (output == NULL)
diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c
index f25c29a12d00..74ca7aabf4e1 100644
--- a/arch/um/os-Linux/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -71,8 +71,8 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv)
         data.pre_data = pre_data;
         data.argv = argv;
         data.fd = fds[1];
-        data.buf = __cant_sleep() ? kmalloc(PATH_MAX, UM_GFP_ATOMIC) :
-                                        kmalloc(PATH_MAX, UM_GFP_KERNEL);
+        data.buf = __cant_sleep() ? uml_kmalloc(PATH_MAX, UM_GFP_ATOMIC) :
+                                        uml_kmalloc(PATH_MAX, UM_GFP_KERNEL);
         pid = clone(helper_child, (void *) sp, CLONE_VM, &data);
         if (pid < 0) {
                 ret = -errno;
diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c
index abb9b0ffd960..eee69b9f52c9 100644
--- a/arch/um/os-Linux/main.c
+++ b/arch/um/os-Linux/main.c
@@ -199,7 +199,7 @@ void *__wrap_malloc(int size)
                 return __real_malloc(size);
         else if (size <= UM_KERN_PAGE_SIZE)
                 /* finding contiguous pages can be hard*/
-                ret = kmalloc(size, UM_GFP_KERNEL);
+                ret = uml_kmalloc(size, UM_GFP_KERNEL);
         else ret = vmalloc(size);
 
         /*
diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c
index abf47a7c4abd..eb8f2e4be192 100644
--- a/arch/um/os-Linux/sigio.c
+++ b/arch/um/os-Linux/sigio.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Copyright (C) 2002 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
@@ -15,6 +15,7 @@
 #include "kern_util.h"
 #include "init.h"
 #include "os.h"
+#include "process.h"
 #include "sigio.h"
 #include "um_malloc.h"
 #include "user.h"
@@ -109,7 +110,7 @@ static int need_poll(struct pollfds *polls, int n)
         if (n <= polls->size)
                 return 0;
 
-        new = kmalloc(n * sizeof(struct pollfd), UM_GFP_ATOMIC);
+        new = uml_kmalloc(n * sizeof(struct pollfd), UM_GFP_ATOMIC);
         if (new == NULL) {
                 printk(UM_KERN_ERR "need_poll : failed to allocate new "
                        "pollfds\n");
@@ -243,7 +244,7 @@ static struct pollfd *setup_initial_poll(int fd)
 {
         struct pollfd *p;
 
-        p = kmalloc(sizeof(struct pollfd), UM_GFP_KERNEL);
+        p = uml_kmalloc(sizeof(struct pollfd), UM_GFP_KERNEL);
         if (p == NULL) {
                 printk(UM_KERN_ERR "setup_initial_poll : failed to allocate "
                        "poll\n");
@@ -338,20 +339,10 @@ out_close1:
         close(l_write_sigio_fds[1]);
 }
 
-/* Changed during early boot */
-static int pty_output_sigio = 0;
-static int pty_close_sigio = 0;
-
-void maybe_sigio_broken(int fd, int read)
+void sigio_broken(int fd, int read)
 {
         int err;
 
-        if (!isatty(fd))
-                return;
-
-        if ((read || pty_output_sigio) && (!read || pty_close_sigio))
-                return;
-
         write_sigio_workaround();
 
         sigio_lock();
@@ -370,6 +361,21 @@ out:
         sigio_unlock();
 }
 
+/* Changed during early boot */
+static int pty_output_sigio;
+static int pty_close_sigio;
+
+void maybe_sigio_broken(int fd, int read)
+{
+        if (!isatty(fd))
+                return;
+
+        if ((read || pty_output_sigio) && (!read || pty_close_sigio))
+                return;
+
+        sigio_broken(fd, read);
+}
+
 static void sigio_cleanup(void)
 {
         if (write_sigio_pid == -1)
@@ -383,7 +389,7 @@ static void sigio_cleanup(void)
 __uml_exitcall(sigio_cleanup);
 
 /* Used as a flag during SIGIO testing early in boot */
-static volatile int got_sigio = 0;
+static int got_sigio;
 
 static void __init handler(int sig)
 {
@@ -498,7 +504,8 @@ static void tty_output(int master, int slave)
         if (errno != EAGAIN)
                 printk(UM_KERN_ERR "tty_output : write failed, errno = %d\n",
                        errno);
-        while (((n = read(slave, buf, sizeof(buf))) > 0) && !got_sigio)
+        while (((n = read(slave, buf, sizeof(buf))) > 0) &&
+               !({ barrier(); got_sigio; }))
                 ;
 
         if (got_sigio) {
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 3f1694b134cb..5aade6027e40 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -12,6 +12,7 @@
 #include "as-layout.h"
 #include "kern_util.h"
 #include "os.h"
+#include "process.h"
 #include "sysdep/barrier.h"
 #include "sysdep/sigcontext.h"
 #include "user.h"
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 1e8cba6550a9..6be028ca1817 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -442,7 +442,7 @@ void userspace(struct uml_pt_regs *regs)
                                 unblock_signals();
                                 break;
                         default:
-                                printk(UM_KERN_ERR "userspace - child stopped "
+                                printk(UM_KERN_ERR "userspace - child stopped "
                                        "with signal %d\n", sig);
                                 fatal_sigsegv();
                         }
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 997d01944f91..b4b36e0f2e89 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -23,6 +23,7 @@
 #include "mem_user.h"
 #include "ptrace_user.h"
 #include "registers.h"
+#include "skas.h"
 #include "skas_ptrace.h"
 
 static void ptrace_child(void)
@@ -140,14 +141,27 @@ static int stop_ptraced_child(int pid, int exitcode, int mustexit)
 }
 
 /* Changed only during early boot */
-int ptrace_faultinfo = 1;
-int ptrace_ldt = 1;
-int proc_mm = 1;
-int skas_needs_stub = 0;
+int ptrace_faultinfo;
+static int disable_ptrace_faultinfo;
+
+int ptrace_ldt;
+static int disable_ptrace_ldt;
+
+int proc_mm;
+static int disable_proc_mm;
+
+int have_switch_mm;
+static int disable_switch_mm;
+
+int skas_needs_stub;
 
 static int __init skas0_cmd_param(char *str, int* add)
 {
-        ptrace_faultinfo = proc_mm = 0;
+        disable_ptrace_faultinfo = 1;
+        disable_ptrace_ldt = 1;
+        disable_proc_mm = 1;
+        disable_switch_mm = 1;
+
         return 0;
 }
 
@@ -157,15 +171,12 @@ static int __init mode_skas0_cmd_param(char *str, int* add)
         __attribute__((alias("skas0_cmd_param")));
 
 __uml_setup("skas0", skas0_cmd_param,
-                "skas0\n"
-                "    Disables SKAS3 usage, so that SKAS0 is used, unless \n"
-                "    you specify mode=tt.\n\n");
+"skas0\n"
+"    Disables SKAS3 and SKAS4 usage, so that SKAS0 is used\n\n");
 
 __uml_setup("mode=skas0", mode_skas0_cmd_param,
-                "mode=skas0\n"
-                "    Disables SKAS3 usage, so that SKAS0 is used, unless you \n"
-                "    specify mode=tt. Note that this was recently added - on \n"
-                "    older kernels you must use simply \"skas0\".\n\n");
+"mode=skas0\n"
+"    Disables SKAS3 and SKAS4 usage, so that SKAS0 is used.\n\n");
 
 /* Changed only during early boot */
 static int force_sysemu_disabled = 0;
@@ -360,7 +371,7 @@ void __init os_early_checks(void)
 
 static int __init noprocmm_cmd_param(char *str, int* add)
 {
-        proc_mm = 0;
+        disable_proc_mm = 1;
         return 0;
 }
 
@@ -372,7 +383,7 @@ __uml_setup("noprocmm", noprocmm_cmd_param,
 
 static int __init noptracefaultinfo_cmd_param(char *str, int* add)
 {
-        ptrace_faultinfo = 0;
+        disable_ptrace_faultinfo = 1;
         return 0;
 }
 
@@ -384,7 +395,7 @@ __uml_setup("noptracefaultinfo", noptracefaultinfo_cmd_param,
 
 static int __init noptraceldt_cmd_param(char *str, int* add)
 {
-        ptrace_ldt = 0;
+        disable_ptrace_ldt = 1;
         return 0;
 }
 
@@ -404,17 +415,15 @@ static inline void check_skas3_ptrace_faultinfo(void)
 
         n = ptrace(PTRACE_FAULTINFO, pid, 0, &fi);
         if (n < 0) {
-                ptrace_faultinfo = 0;
                 if (errno == EIO)
                         non_fatal("not found\n");
                 else
                         perror("not found");
-        }
+        } else if (disable_ptrace_faultinfo)
+                non_fatal("found but disabled on command line\n");
         else {
-                if (!ptrace_faultinfo)
-                        non_fatal("found but disabled on command line\n");
-                else
-                        non_fatal("found\n");
+                ptrace_faultinfo = 1;
+                non_fatal("found\n");
         }
 
         stop_ptraced_child(pid, 1, 1);
@@ -437,38 +446,30 @@ static inline void check_skas3_ptrace_ldt(void)
         if (n < 0) {
                 if (errno == EIO)
                         non_fatal("not found\n");
-                else {
+                else
                         perror("not found");
-                }
-                ptrace_ldt = 0;
-        }
+        } else if (disable_ptrace_ldt)
+                non_fatal("found, but use is disabled\n");
         else {
-                if (ptrace_ldt)
-                        non_fatal("found\n");
-                else
-                        non_fatal("found, but use is disabled\n");
+                ptrace_ldt = 1;
+                non_fatal("found\n");
         }
 
         stop_ptraced_child(pid, 1, 1);
-#else
-        /* PTRACE_LDT might be disabled via cmdline option.
-         * We want to override this, else we might use the stub
-         * without real need
-         */
-        ptrace_ldt = 1;
 #endif
 }
 
 static inline void check_skas3_proc_mm(void)
 {
         non_fatal("  - /proc/mm...");
-        if (access("/proc/mm", W_OK) < 0) {
-                proc_mm = 0;
+        if (access("/proc/mm", W_OK) < 0)
                 perror("not found");
-        }
-        else if (!proc_mm)
+        else if (disable_proc_mm)
                 non_fatal("found but disabled on command line\n");
-        else non_fatal("found\n");
+        else {
+                proc_mm = 1;
+                non_fatal("found\n");
+        }
 }
 
 void can_do_skas(void)
diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c
index b613473b3ec1..c6183e7aec3d 100644
--- a/arch/um/os-Linux/sys-i386/registers.c
+++ b/arch/um/os-Linux/sys-i386/registers.c
@@ -5,6 +5,7 @@
  */
 
 #include <errno.h>
+#include <asm/user.h>
 #include "kern_constants.h"
 #include "longjmp.h"
 #include "user.h"
@@ -74,10 +75,10 @@ int put_fp_registers(int pid, unsigned long *regs)
 
 void arch_init_registers(int pid)
 {
-        unsigned long fpx_regs[HOST_XFP_SIZE];
+        struct user_fxsr_struct fpx_regs;
         int err;
 
-        err = ptrace(PTRACE_GETFPXREGS, pid, 0, fpx_regs);
+        err = ptrace(PTRACE_GETFPXREGS, pid, 0, &fpx_regs);
         if (!err)
                 return;
 
diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index e49280599465..bee98f466d66 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -9,7 +9,9 @@
 #include <time.h>
 #include <sys/time.h>
 #include "kern_constants.h"
+#include "kern_util.h"
 #include "os.h"
+#include "process.h"
 #include "user.h"
 
 int set_interval(void)
@@ -58,12 +60,17 @@ static inline long long timeval_to_ns(const struct timeval *tv)
 long long disable_timer(void)
 {
         struct itimerval time = ((struct itimerval) { { 0, 0 }, { 0, 0 } });
+        int remain, max = UM_NSEC_PER_SEC / UM_HZ;
 
         if (setitimer(ITIMER_VIRTUAL, &time, &time) < 0)
                 printk(UM_KERN_ERR "disable_timer - setitimer failed, "
                        "errno = %d\n", errno);
 
-        return timeval_to_ns(&time.it_value);
+        remain = timeval_to_ns(&time.it_value);
+        if (remain > max)
+                remain = max;
+
+        return remain;
 }
 
 long long os_nsecs(void)
@@ -79,7 +86,44 @@ static int after_sleep_interval(struct timespec *ts)
 {
         return 0;
 }
+
+static void deliver_alarm(void)
+{
+        alarm_handler(SIGVTALRM, NULL);
+}
+
+static unsigned long long sleep_time(unsigned long long nsecs)
+{
+        return nsecs;
+}
+
 #else
+unsigned long long last_tick;
+unsigned long long skew;
+
+static void deliver_alarm(void)
+{
+        unsigned long long this_tick = os_nsecs();
+        int one_tick = UM_NSEC_PER_SEC / UM_HZ;
+
+        if (last_tick == 0)
+                last_tick = this_tick - one_tick;
+
+        skew += this_tick - last_tick;
+
+        while (skew >= one_tick) {
+                alarm_handler(SIGVTALRM, NULL);
+                skew -= one_tick;
+        }
+
+        last_tick = this_tick;
+}
+
+static unsigned long long sleep_time(unsigned long long nsecs)
+{
+        return nsecs > skew ? nsecs - skew : 0;
+}
+
 static inline long long timespec_to_us(const struct timespec *ts)
 {
         return ((long long) ts->tv_sec * UM_USEC_PER_SEC) +
@@ -102,6 +146,8 @@ static int after_sleep_interval(struct timespec *ts)
          */
         if (start_usecs > usec)
                 start_usecs = usec;
+
+        start_usecs -= skew / UM_NSEC_PER_USEC;
         tv = ((struct timeval) { .tv_sec  = start_usecs / UM_USEC_PER_SEC,
                                  .tv_usec = start_usecs % UM_USEC_PER_SEC });
         interval = ((struct itimerval) { { 0, usec }, tv });
@@ -113,8 +159,6 @@ static int after_sleep_interval(struct timespec *ts)
 }
 #endif
 
-extern void alarm_handler(int sig, struct sigcontext *sc);
-
 void idle_sleep(unsigned long long nsecs)
 {
         struct timespec ts;
@@ -126,10 +170,12 @@ void idle_sleep(unsigned long long nsecs)
          */
         if (nsecs == 0)
                 nsecs = UM_NSEC_PER_SEC / UM_HZ;
+
+        nsecs = sleep_time(nsecs);
         ts = ((struct timespec) { .tv_sec       = nsecs / UM_NSEC_PER_SEC,
                                   .tv_nsec      = nsecs % UM_NSEC_PER_SEC });
 
         if (nanosleep(&ts, &ts) == 0)
-                alarm_handler(SIGVTALRM, NULL);
+                deliver_alarm();
         after_sleep_interval(&ts);
 }
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c
index 6b4499906a6c..c9b176534d65 100644
--- a/arch/um/sys-i386/ptrace.c
+++ b/arch/um/sys-i386/ptrace.c
@@ -148,14 +148,13 @@ int peek_user(struct task_struct *child, long addr, long data)
 int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 {
         int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
-        long fpregs[HOST_FP_SIZE];
+        struct user_i387_struct fpregs;
 
-        BUG_ON(sizeof(*buf) != sizeof(fpregs));
-        err = save_fp_registers(userspace_pid[cpu], fpregs);
+        err = save_fp_registers(userspace_pid[cpu], (unsigned long *) &fpregs);
         if (err)
                 return err;
 
-        n = copy_to_user(buf, fpregs, sizeof(fpregs));
+        n = copy_to_user(buf, &fpregs, sizeof(fpregs));
         if(n > 0)
                 return -EFAULT;
 
@@ -165,27 +164,26 @@ int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 {
         int n, cpu = ((struct thread_info *) child->stack)->cpu;
-        long fpregs[HOST_FP_SIZE];
+        struct user_i387_struct fpregs;
 
-        BUG_ON(sizeof(*buf) != sizeof(fpregs));
-        n = copy_from_user(fpregs, buf, sizeof(fpregs));
+        n = copy_from_user(&fpregs, buf, sizeof(fpregs));
         if (n > 0)
                 return -EFAULT;
 
-        return restore_fp_registers(userspace_pid[cpu], fpregs);
+        return restore_fp_registers(userspace_pid[cpu],
+                                    (unsigned long *) &fpregs);
 }
 
 int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 {
         int err, n, cpu = ((struct thread_info *) child->stack)->cpu;
-        long fpregs[HOST_XFP_SIZE];
+        struct user_fxsr_struct fpregs;
 
-        BUG_ON(sizeof(*buf) != sizeof(fpregs));
-        err = save_fpx_registers(userspace_pid[cpu], fpregs);
+        err = save_fpx_registers(userspace_pid[cpu], (unsigned long *) &fpregs);
         if (err)
                 return err;
 
-        n = copy_to_user(buf, fpregs, sizeof(fpregs));
+        n = copy_to_user(buf, &fpregs, sizeof(fpregs));
         if(n > 0)
                 return -EFAULT;
 
@@ -195,14 +193,14 @@ int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 {
         int n, cpu = ((struct thread_info *) child->stack)->cpu;
-        long fpregs[HOST_XFP_SIZE];
+        struct user_fxsr_struct fpregs;
 
-        BUG_ON(sizeof(*buf) != sizeof(fpregs));
-        n = copy_from_user(fpregs, buf, sizeof(fpregs));
+        n = copy_from_user(&fpregs, buf, sizeof(fpregs));
         if (n > 0)
                 return -EFAULT;
 
-        return restore_fpx_registers(userspace_pid[cpu], fpregs);
+        return restore_fpx_registers(userspace_pid[cpu],
+                                     (unsigned long *) &fpregs);
 }
 
 long subarch_ptrace(struct task_struct *child, long request, long addr,
diff --git a/arch/um/sys-i386/user-offsets.c b/arch/um/sys-i386/user-offsets.c
index 39bd32bf84f0..5f883bfe773f 100644
--- a/arch/um/sys-i386/user-offsets.c
+++ b/arch/um/sys-i386/user-offsets.c
@@ -22,7 +22,7 @@ void foo(void)
         OFFSET(HOST_SC_CR2, sigcontext, cr2);
 
         DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_fpregs_struct));
-        DEFINE_LONGS(HOST_XFP_SIZE, sizeof(struct user_fpxregs_struct));
+        DEFINE_LONGS(HOST_FPX_SIZE, sizeof(struct user_fpxregs_struct));
 
         DEFINE(HOST_IP, EIP);
         DEFINE(HOST_SP, UESP);
diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c
index 2f3443c6e859..973585414a66 100644
--- a/arch/um/sys-x86_64/user-offsets.c
+++ b/arch/um/sys-x86_64/user-offsets.c
@@ -24,7 +24,6 @@ void foo(void)
         OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
 
         DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
-        DEFINE(HOST_XFP_SIZE, 0);
         DEFINE_LONGS(HOST_RBX, RBX);
         DEFINE_LONGS(HOST_RCX, RCX);
         DEFINE_LONGS(HOST_RDI, RDI);
diff --git a/arch/x86/kernel/acpi/realmode/wakeup.lds.S b/arch/x86/kernel/acpi/realmode/wakeup.lds.S
index 22fab6c4be15..7da00b799cda 100644
--- a/arch/x86/kernel/acpi/realmode/wakeup.lds.S
+++ b/arch/x86/kernel/acpi/realmode/wakeup.lds.S
@@ -12,11 +12,6 @@ ENTRY(_start)
 
 SECTIONS
 {
-        . = HEADER_OFFSET;
-        .header : {
-                 *(.header)
-        }
-
         . = 0;
         .text : {
                  *(.text*)
@@ -50,6 +45,11 @@ SECTIONS
                 __bss_end = .;
         }
 
+        . = HEADER_OFFSET;
+        .header : {
+                *(.header)
+        }
+
         . = ALIGN(16);
         _end = .;
 
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 0c37f16b6950..c5ef1af8e79d 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -385,11 +385,13 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
         if (dma_alloc_from_coherent_mem(dev, size, dma_handle, &memory))
                 return memory;
 
-        if (!dev)
+        if (!dev) {
                 dev = &fallback_dev;
+                gfp |= GFP_DMA;
+        }
         dma_mask = dev->coherent_dma_mask;
         if (dma_mask == 0)
-                dma_mask = DMA_32BIT_MASK;
+                dma_mask = (gfp & GFP_DMA) ? DMA_24BIT_MASK : DMA_32BIT_MASK;
 
         /* Device not DMA able */
         if (dev->dma_mask == NULL)
@@ -403,7 +405,7 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
            larger than 16MB and in this case we have a chance of
            finding fitting memory in the next higher zone first. If
            not retry with true GFP_DMA. -AK */
-        if (dma_mask <= DMA_32BIT_MASK)
+        if (dma_mask <= DMA_32BIT_MASK && !(gfp & GFP_DMA))
                 gfp |= GFP_DMA32;
 #endif
 
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index fb03ef380f0e..a7835f282936 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1303,6 +1303,9 @@ static const struct user_regset_view user_x86_64_view = {
 #define genregs32_get           genregs_get
 #define genregs32_set           genregs_set
 
+#define user_i387_ia32_struct   user_i387_struct
+#define user32_fxsr_struct      user_fxsr_struct
+
 #endif  /* CONFIG_X86_64 */
 
 #if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
@@ -1315,13 +1318,13 @@ static const struct user_regset x86_32_regsets[] = {
         },
         [REGSET_FP] = {
                 .core_note_type = NT_PRFPREG,
-                .n = sizeof(struct user_i387_struct) / sizeof(u32),
+                .n = sizeof(struct user_i387_ia32_struct) / sizeof(u32),
                 .size = sizeof(u32), .align = sizeof(u32),
                 .active = fpregs_active, .get = fpregs_get, .set = fpregs_set
         },
         [REGSET_XFP] = {
                 .core_note_type = NT_PRXFPREG,
-                .n = sizeof(struct user_i387_struct) / sizeof(u32),
+                .n = sizeof(struct user32_fxsr_struct) / sizeof(u32),
                 .size = sizeof(u32), .align = sizeof(u32),
                 .active = xfpregs_active, .get = xfpregs_get, .set = xfpregs_set
         },
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index c0c68c18a788..6f80b852a196 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -12,6 +12,7 @@
 #include <asm/mpspec.h>
 #include <asm/apicdef.h>
 
+#ifdef CONFIG_X86_LOCAL_APIC
 unsigned int num_processors;
 unsigned disabled_cpus __cpuinitdata;
 /* Processor that is doing the boot up */
@@ -23,8 +24,9 @@ EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid);
 
 /* Bitmask of physically existing CPUs */
 physid_mask_t phys_cpu_present_map;
+#endif
 
-#if defined(CONFIG_HAVE_SETUP_PER_CPU_AREA) && defined(CONFIG_SMP)
+#if defined(CONFIG_HAVE_SETUP_PER_CPU_AREA) && defined(CONFIG_X86_SMP)
 /*
  * Copy data used in early init routines from the initial arrays to the
  * per cpu data areas.  These arrays then become expendable and the
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index f2fc8feb727d..6dff1286ad8a 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -951,7 +951,7 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
 static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c)
 {
         if (c->x86 == 0x6 && c->x86_model >= 0xf)
-                set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability);
+                set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
 }
 
 static void __cpuinit init_centaur(struct cpuinfo_x86 *c)
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index 8f75893a6467..0cb7aadc87cd 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -231,7 +231,8 @@ native_smp_call_function_mask(cpumask_t mask,
         wmb();
 
         /* Send a message to other CPUs */
-        if (cpus_equal(mask, allbutself))
+        if (cpus_equal(mask, allbutself) &&
+            cpus_equal(cpu_online_map, cpu_callout_map))
                 send_IPI_allbutself(CALL_FUNCTION_VECTOR);
         else
                 send_IPI_mask(mask, CALL_FUNCTION_VECTOR);
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 6b087ab6cd8f..38988491c622 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -86,6 +86,7 @@ void *x86_bios_cpu_apicid_early_ptr;
 
 #ifdef CONFIG_X86_32
 u8 apicid_2_node[MAX_APICID];
+static int low_mappings;
 #endif
 
 /* State of each CPU */
@@ -326,6 +327,12 @@ static void __cpuinit start_secondary(void *unused)
                 enable_8259A_irq(0);
         }
 
+#ifdef CONFIG_X86_32
+        while (low_mappings)
+                cpu_relax();
+        __flush_tlb_all();
+#endif
+
         /* This must be done before setting cpu_online_map */
         set_cpu_sibling_map(raw_smp_processor_id());
         wmb();
@@ -1040,14 +1047,20 @@ int __cpuinit native_cpu_up(unsigned int cpu)
 #ifdef CONFIG_X86_32
         /* init low mem mapping */
         clone_pgd_range(swapper_pg_dir, swapper_pg_dir + KERNEL_PGD_BOUNDARY,
-                        min_t(unsigned long, KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY));
+                min_t(unsigned long, KERNEL_PGD_PTRS, KERNEL_PGD_BOUNDARY));
         flush_tlb_all();
-#endif
+        low_mappings = 1;
 
         err = do_boot_cpu(apicid, cpu);
-        if (err < 0) {
+
+        zap_low_mappings();
+        low_mappings = 0;
+#else
+        err = do_boot_cpu(apicid, cpu);
+#endif
+        if (err) {
                 Dprintk("do_boot_cpu failed %d\n", err);
-                return err;
+                return -EIO;
         }
 
         /*
@@ -1259,9 +1272,6 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
         setup_ioapic_dest();
 #endif
         check_nmi_watchdog();
-#ifdef CONFIG_X86_32
-        zap_low_mappings();
-#endif
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c
index 58882f9f2637..f6c05d0410fb 100644
--- a/arch/x86/kernel/x8664_ksyms_64.c
+++ b/arch/x86/kernel/x8664_ksyms_64.c
@@ -2,6 +2,7 @@
    All C exports should go in the respective C files. */
 
 #include <linux/module.h>
+#include <net/checksum.h>
 #include <linux/smp.h>
 
 #include <asm/processor.h>
@@ -29,6 +30,8 @@ EXPORT_SYMBOL(__copy_from_user_inatomic);
 EXPORT_SYMBOL(copy_page);
 EXPORT_SYMBOL(clear_page);
 
+EXPORT_SYMBOL(csum_partial);
+
 /*
  * Export string functions. We normally rely on gcc builtin for most of these,
  * but gcc sometimes decides not to inline them.
diff --git a/arch/x86/lib/csum-partial_64.c b/arch/x86/lib/csum-partial_64.c
index bc503f506903..bf51144d97e1 100644
--- a/arch/x86/lib/csum-partial_64.c
+++ b/arch/x86/lib/csum-partial_64.c
@@ -136,8 +136,6 @@ __wsum csum_partial(const void *buff, int len, __wsum sum)
                                                 (__force u32)sum);
 }
 
-EXPORT_SYMBOL(csum_partial);
-
 /*
  * this routine is used for miscellaneous IP-like checksums, mainly
  * in icmp.c
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index de236e419cb5..ec30d10154b6 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -438,8 +438,6 @@ void zap_low_mappings(void)
 {
         int i;
 
-        save_pg_dir();
-
         /*
          * Zap initial low-memory mappings.
          *
@@ -663,16 +661,8 @@ void __init mem_init(void)
                 test_wp_bit();
 
         cpa_init();
-
-        /*
-         * Subtle. SMP is doing it's boot stuff late (because it has to
-         * fork idle threads) - but it also needs low mappings for the
-         * protected-mode entry to work. We zap these entries only after
-         * the WP-bit has been tested.
-         */
-#ifndef CONFIG_SMP
+        save_pg_dir();
         zap_low_mappings();
-#endif
 }
 
 #ifdef CONFIG_MEMORY_HOTPLUG
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 60adbe22efa0..bcb1a8e4b2db 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -555,7 +555,7 @@ int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
                 "%s:%d /dev/mem ioremap_change_attr failed %s for %Lx-%Lx\n",
                         current->comm, current->pid,
                         cattr_name(flags),
-                        offset, offset + size);
+                        offset, (unsigned long long)(offset + size));
                 return 0;
         }
 
@@ -576,7 +576,7 @@ void map_devmem(unsigned long pfn, unsigned long size, pgprot_t vma_prot)
                 "%s:%d /dev/mem expected mapping type %s for %Lx-%Lx, got %s\n",
                         current->comm, current->pid,
                         cattr_name(want_flags),
-                        addr, addr + size,
+                        addr, (unsigned long long)(addr + size),
                         cattr_name(flags));
         }
 }
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 8af0f0bae2af..10fb308fded8 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -301,15 +301,13 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
         prot = pgprot_val(vma->vm_page_prot);
         if (pat_wc_enabled && write_combine)
                 prot |= _PAGE_CACHE_WC;
-        else if (pat_wc_enabled)
+        else if (pat_wc_enabled || boot_cpu_data.x86 > 3)
                 /*
                  * ioremap() and ioremap_nocache() defaults to UC MINUS for now.
                  * To avoid attribute conflicts, request UC MINUS here
                  * aswell.
                  */
                 prot |= _PAGE_CACHE_UC_MINUS;
-        else if (boot_cpu_data.x86 > 3)
-                prot |= _PAGE_CACHE_UC;
 
         vma->vm_page_prot = __pgprot(prot);