22 files changed, 199 insertions, 71 deletions

diff --git a/arch/x86_64/defconfig b/arch/x86_64/defconfig
index 3c45ec22b3fe..69db0c0721d1 100644
--- a/arch/x86_64/defconfig
+++ b/arch/x86_64/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.17-rc1
-# Mon Apr  3 16:11:14 2006
+# Linux kernel version: 2.6.17-rc1-git11
+# Sun Apr 16 07:22:36 2006
 #
 CONFIG_X86_64=y
 CONFIG_64BIT=y
@@ -57,6 +57,7 @@ CONFIG_FUTEX=y
 CONFIG_EPOLL=y
 CONFIG_SHMEM=y
 CONFIG_SLAB=y
+CONFIG_DOUBLEFAULT=y
 # CONFIG_TINY_SHMEM is not set
 CONFIG_BASE_SMALL=0
 # CONFIG_SLOB is not set
@@ -121,6 +122,7 @@ CONFIG_PREEMPT_VOLUNTARY=y
 CONFIG_PREEMPT_BKL=y
 CONFIG_NUMA=y
 CONFIG_K8_NUMA=y
+CONFIG_NODES_SHIFT=6
 CONFIG_X86_64_ACPI_NUMA=y
 CONFIG_NUMA_EMU=y
 CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
@@ -544,7 +546,6 @@ CONFIG_SCSI_SATA_INTEL_COMBINED=y
 # CONFIG_SCSI_INIA100 is not set
 # CONFIG_SCSI_SYM53C8XX_2 is not set
 # CONFIG_SCSI_IPR is not set
-# CONFIG_SCSI_QLOGIC_FC is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
 # CONFIG_SCSI_QLA_FC is not set
 # CONFIG_SCSI_LPFC is not set
@@ -1045,9 +1046,7 @@ CONFIG_USB_HIDINPUT=y
 # CONFIG_USB_ACECAD is not set
 # CONFIG_USB_KBTAB is not set
 # CONFIG_USB_POWERMATE is not set
-# CONFIG_USB_MTOUCH is not set
-# CONFIG_USB_ITMTOUCH is not set
-# CONFIG_USB_EGALAX is not set
+# CONFIG_USB_TOUCHSCREEN is not set
 # CONFIG_USB_YEALINK is not set
 # CONFIG_USB_XPAD is not set
 # CONFIG_USB_ATI_REMOTE is not set
@@ -1118,6 +1117,14 @@ CONFIG_USB_MON=y
 # CONFIG_NEW_LEDS is not set
 
 #
+# LED drivers
+#
+
+#
+# LED Triggers
+#
+
+#
 # InfiniBand support
 #
 # CONFIG_INFINIBAND is not set
diff --git a/arch/x86_64/ia32/Makefile b/arch/x86_64/ia32/Makefile
index 929e6b0771f8..e9263b4975e0 100644
--- a/arch/x86_64/ia32/Makefile
+++ b/arch/x86_64/ia32/Makefile
@@ -27,5 +27,5 @@ $(obj)/vsyscall-sysenter.so $(obj)/vsyscall-syscall.so: \
 $(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
         $(call if_changed,syscall)
 
-AFLAGS_vsyscall-sysenter.o = -m32
-AFLAGS_vsyscall-syscall.o = -m32
+AFLAGS_vsyscall-sysenter.o = -m32 -Wa,-32
+AFLAGS_vsyscall-syscall.o = -m32 -Wa,-32
diff --git a/arch/x86_64/ia32/ia32_binfmt.c b/arch/x86_64/ia32/ia32_binfmt.c
index e776139afb20..926c4743d13b 100644
--- a/arch/x86_64/ia32/ia32_binfmt.c
+++ b/arch/x86_64/ia32/ia32_binfmt.c
@@ -339,7 +339,7 @@ int ia32_setup_arg_pages(struct linux_binprm *bprm, unsigned long stack_top,
         struct mm_struct *mm = current->mm;
         int i, ret;
 
-        stack_base = IA32_STACK_TOP - MAX_ARG_PAGES * PAGE_SIZE;
+        stack_base = stack_top - MAX_ARG_PAGES * PAGE_SIZE;
         mm->arg_start = bprm->p + stack_base;
 
         bprm->p += stack_base;
@@ -357,7 +357,7 @@ int ia32_setup_arg_pages(struct linux_binprm *bprm, unsigned long stack_top,
         {
                 mpnt->vm_mm = mm;
                 mpnt->vm_start = PAGE_MASK & (unsigned long) bprm->p;
-                mpnt->vm_end = IA32_STACK_TOP;
+                mpnt->vm_end = stack_top;
                 if (executable_stack == EXSTACK_ENABLE_X)
                         mpnt->vm_flags = VM_STACK_FLAGS |  VM_EXEC;
                 else if (executable_stack == EXSTACK_DISABLE_X)
diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S
index 5a9802676689..5a92fed2d1d5 100644
--- a/arch/x86_64/ia32/ia32entry.S
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -694,4 +694,6 @@ ia32_sys_call_table:
         .quad compat_sys_get_robust_list
         .quad sys_splice
         .quad sys_sync_file_range
+        .quad sys_tee
+        .quad compat_sys_vmsplice
 ia32_syscall_end:               
diff --git a/arch/x86_64/kernel/Makefile b/arch/x86_64/kernel/Makefile
index a098a11e7755..059c88313f4e 100644
--- a/arch/x86_64/kernel/Makefile
+++ b/arch/x86_64/kernel/Makefile
@@ -8,7 +8,7 @@ obj-y	:= process.o signal.o entry.o traps.o irq.o \
                 ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_x86_64.o \
                 x8664_ksyms.o i387.o syscall.o vsyscall.o \
                 setup64.o bootflag.o e820.o reboot.o quirks.o i8237.o \
-                dmi_scan.o pci-dma.o pci-nommu.o
+                pci-dma.o pci-nommu.o
 
 obj-$(CONFIG_X86_MCE)         += mce.o
 obj-$(CONFIG_X86_MCE_INTEL)     += mce_intel.o
@@ -49,5 +49,3 @@ intel_cacheinfo-y		+= ../../i386/kernel/cpu/intel_cacheinfo.o
 quirks-y                        += ../../i386/kernel/quirks.o
 i8237-y                         += ../../i386/kernel/i8237.o
 msr-$(subst m,y,$(CONFIG_X86_MSR))  += ../../i386/kernel/msr.o
-dmi_scan-y                      += ../../i386/kernel/dmi_scan.o
-
diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c
index 62776c07cff1..1ef6028f721e 100644
--- a/arch/x86_64/kernel/e820.c
+++ b/arch/x86_64/kernel/e820.c
@@ -76,6 +76,12 @@ static inline int bad_addr(unsigned long *addrp, unsigned long size)
                 *addrp = __pa_symbol(&_end);
                 return 1;
         }
+
+        if (last >= ebda_addr && addr < ebda_addr + ebda_size) {
+                *addrp = ebda_addr + ebda_size;
+                return 1;
+        }
+
         /* XXX ramdisk image here? */ 
         return 0;
 } 
@@ -143,7 +149,7 @@ unsigned long __init find_e820_area(unsigned long start, unsigned long end, unsi
                         addr = start;
                 if (addr > ei->addr + ei->size) 
                         continue; 
-                while (bad_addr(&addr, size) && addr+size < ei->addr + ei->size)
+                while (bad_addr(&addr, size) && addr+size <= ei->addr+ei->size)
                         ;
                 last = addr + size;
                 if (last > ei->addr + ei->size)
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index c946e4fe67a7..586b34c00c48 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -281,12 +281,7 @@ tracesys:
         ja  1f
         movq %r10,%rcx  /* fixup for C */
         call *sys_call_table(,%rax,8)
-        movq %rax,RAX-ARGOFFSET(%rsp)
-1:      SAVE_REST
-        movq %rsp,%rdi
-        call syscall_trace_leave
-        RESTORE_TOP_OF_STACK %rbx
-        RESTORE_REST
+1:      movq %rax,RAX-ARGOFFSET(%rsp)
         /* Use IRET because user could have changed frame */
         jmp int_ret_from_sys_call
         CFI_ENDPROC
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 77b4c608cca0..9cc7031b7151 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -271,6 +271,18 @@ __setup("enable_8254_timer", setup_enable_8254_timer);
 #include <linux/pci_ids.h>
 #include <linux/pci.h>
 
+
+#ifdef CONFIG_ACPI
+
+static int nvidia_hpet_detected __initdata;
+
+static int __init nvidia_hpet_check(unsigned long phys, unsigned long size)
+{
+        nvidia_hpet_detected = 1;
+        return 0;
+}
+#endif
+
 /* Temporary Hack. Nvidia and VIA boards currently only work with IO-APIC
    off. Check for an Nvidia or VIA PCI bridge and turn it off.
    Use pci direct infrastructure because this runs before the PCI subsystem. 
@@ -317,11 +329,19 @@ void __init check_ioapic(void)
                                         return;
                                 case PCI_VENDOR_ID_NVIDIA:
 #ifdef CONFIG_ACPI
-                                        /* All timer overrides on Nvidia
-                                           seem to be wrong. Skip them. */
-                                        acpi_skip_timer_override = 1;
-                                        printk(KERN_INFO 
-             "Nvidia board detected. Ignoring ACPI timer override.\n");
+                                        /*
+                                         * All timer overrides on Nvidia are
+                                         * wrong unless HPET is enabled.
+                                         */
+                                        nvidia_hpet_detected = 0;
+                                        acpi_table_parse(ACPI_HPET,
+                                                        nvidia_hpet_check);
+                                        if (nvidia_hpet_detected == 0) {
+                                                acpi_skip_timer_override = 1;
+                                                printk(KERN_INFO "Nvidia board "
+                                                    "detected. Ignoring ACPI "
+                                                    "timer override.\n");
+                                        }
 #endif
                                         /* RED-PEN skip them on mptables too? */
                                         return;
@@ -1777,6 +1797,8 @@ static inline void unlock_ExtINT_logic(void)
         spin_unlock_irqrestore(&ioapic_lock, flags);
 }
 
+int timer_uses_ioapic_pin_0;
+
 /*
  * This code may look a bit paranoid, but it's supposed to cooperate with
  * a wide range of boards and BIOS bugs.  Fortunately only the timer IRQ
@@ -1814,6 +1836,9 @@ static inline void check_timer(void)
         pin2  = ioapic_i8259.pin;
         apic2 = ioapic_i8259.apic;
 
+        if (pin1 == 0)
+                timer_uses_ioapic_pin_0 = 1;
+
         apic_printk(APIC_VERBOSE,KERN_INFO "..TIMER: vector=0x%02X apic1=%d pin1=%d apic2=%d pin2=%d\n",
                 vector, apic1, pin1, apic2, pin2);
 
diff --git a/arch/x86_64/kernel/kprobes.c b/arch/x86_64/kernel/kprobes.c
index accbff3fec49..fa1d19ca700a 100644
--- a/arch/x86_64/kernel/kprobes.c
+++ b/arch/x86_64/kernel/kprobes.c
@@ -53,7 +53,7 @@ DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
 /*
  * returns non-zero if opcode modifies the interrupt flag.
  */
-static inline int is_IF_modifier(kprobe_opcode_t *insn)
+static __always_inline int is_IF_modifier(kprobe_opcode_t *insn)
 {
         switch (*insn) {
         case 0xfa:              /* cli */
@@ -84,7 +84,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
  * If it does, return the address of the 32-bit displacement word.
  * If not, return null.
  */
-static inline s32 *is_riprel(u8 *insn)
+static s32 __kprobes *is_riprel(u8 *insn)
 {
 #define W(row,b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,ba,bb,bc,bd,be,bf)                \
         (((b0##UL << 0x0)|(b1##UL << 0x1)|(b2##UL << 0x2)|(b3##UL << 0x3) |   \
@@ -229,7 +229,7 @@ void __kprobes arch_remove_kprobe(struct kprobe *p)
         mutex_unlock(&kprobe_mutex);
 }
 
-static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
+static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
 {
         kcb->prev_kprobe.kp = kprobe_running();
         kcb->prev_kprobe.status = kcb->kprobe_status;
@@ -237,7 +237,7 @@ static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
         kcb->prev_kprobe.saved_rflags = kcb->kprobe_saved_rflags;
 }
 
-static inline void restore_previous_kprobe(struct kprobe_ctlblk *kcb)
+static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
 {
         __get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
         kcb->kprobe_status = kcb->prev_kprobe.status;
@@ -245,7 +245,7 @@ static inline void restore_previous_kprobe(struct kprobe_ctlblk *kcb)
         kcb->kprobe_saved_rflags = kcb->prev_kprobe.saved_rflags;
 }
 
-static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
+static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
                                 struct kprobe_ctlblk *kcb)
 {
         __get_cpu_var(current_kprobe) = p;
@@ -514,13 +514,13 @@ static void __kprobes resume_execution(struct kprobe *p,
                 *tos = orig_rip + (*tos - copy_rip);
                 break;
         case 0xff:
-                if ((*insn & 0x30) == 0x10) {
+                if ((insn[1] & 0x30) == 0x10) {
                         /* call absolute, indirect */
                         /* Fix return addr; rip is correct. */
                         next_rip = regs->rip;
                         *tos = orig_rip + (*tos - copy_rip);
-                } else if (((*insn & 0x31) == 0x20) ||  /* jmp near, absolute indirect */
-                           ((*insn & 0x31) == 0x21)) {  /* jmp far, absolute indirect */
+                } else if (((insn[1] & 0x31) == 0x20) ||        /* jmp near, absolute indirect */
+                           ((insn[1] & 0x31) == 0x21)) {        /* jmp far, absolute indirect */
                         /* rip is correct. */
                         next_rip = regs->rip;
                 }
diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index 6f0790e8b6d3..c69fc43cee7b 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -629,7 +629,7 @@ static __cpuinit void mce_remove_device(unsigned int cpu)
 #endif
 
 /* Get notified when a cpu comes on/off. Be hotplug friendly. */
-static __cpuinit int
+static int
 mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
         unsigned int cpu = (unsigned long)hcpu;
diff --git a/arch/x86_64/kernel/mce_amd.c b/arch/x86_64/kernel/mce_amd.c
index d3ad7d81266d..d13b241ad094 100644
--- a/arch/x86_64/kernel/mce_amd.c
+++ b/arch/x86_64/kernel/mce_amd.c
@@ -482,7 +482,7 @@ static void threshold_remove_device(unsigned int cpu)
 #endif
 
 /* get notified when a cpu comes on/off */
-static __cpuinit int threshold_cpu_callback(struct notifier_block *nfb,
+static int threshold_cpu_callback(struct notifier_block *nfb,
                                             unsigned long action, void *hcpu)
 {
         /* cpu was unsigned int to begin with */
diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c
index b17cf3eba359..083da7e606b1 100644
--- a/arch/x86_64/kernel/mpparse.c
+++ b/arch/x86_64/kernel/mpparse.c
@@ -968,7 +968,17 @@ int mp_register_gsi(u32 gsi, int triggering, int polarity)
                  */
                 int irq = gsi;
                 if (gsi < MAX_GSI_NUM) {
-                        if (gsi > 15)
+                        /*
+                         * Retain the VIA chipset work-around (gsi > 15), but
+                         * avoid a problem where the 8254 timer (IRQ0) is setup
+                         * via an override (so it's not on pin 0 of the ioapic),
+                         * and at the same time, the pin 0 interrupt is a PCI
+                         * type.  The gsi > 15 test could cause these two pins
+                         * to be shared as IRQ0, and they are not shareable.
+                         * So test for this condition, and if necessary, avoid
+                         * the pin collision.
+                         */
+                        if (gsi > 15 || (gsi == 0 && !timer_uses_ioapic_pin_0))
                                 gsi = pci_irq++;
                         /*
                          * Don't assign IRQ used by ACPI SCI
diff --git a/arch/x86_64/kernel/pci-dma.c b/arch/x86_64/kernel/pci-dma.c
index af035ede70cd..a9275c9557cf 100644
--- a/arch/x86_64/kernel/pci-dma.c
+++ b/arch/x86_64/kernel/pci-dma.c
@@ -54,6 +54,10 @@ dma_alloc_pages(struct device *dev, gfp_t gfp, unsigned order)
         else
 #endif
                 node = numa_node_id();
+
+        if (node < first_node(node_online_map))
+                node = first_node(node_online_map);
+
         page = alloc_pages_node(node, gfp, order);
         return page ? page_address(page) : NULL;
 }
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index a6c01e121266..82a7c9bfdfa0 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -112,10 +112,6 @@ static unsigned long alloc_iommu(int size)
 static void free_iommu(unsigned long offset, int size)
 { 
         unsigned long flags;
-        if (size == 1) { 
-                clear_bit(offset, iommu_gart_bitmap); 
-                return;
-        }
         spin_lock_irqsave(&iommu_bitmap_lock, flags);
         __clear_bit_string(iommu_gart_bitmap, offset, size);
         spin_unlock_irqrestore(&iommu_bitmap_lock, flags);
@@ -635,14 +631,20 @@ static int __init pci_iommu_init(void)
                 printk(KERN_INFO "PCI-DMA: Disabling IOMMU.\n");
                 if (end_pfn > MAX_DMA32_PFN) {
                         printk(KERN_ERR "WARNING more than 4GB of memory "
-                                        "but IOMMU not compiled in.\n"
-                               KERN_ERR "WARNING 32bit PCI may malfunction.\n"
-                               KERN_ERR "You might want to enable "
-                                        "CONFIG_GART_IOMMU\n");
+                                        "but IOMMU not available.\n"
+                               KERN_ERR "WARNING 32bit PCI may malfunction.\n");
                 }
                 return -1;
         }
 
+        i = 0;
+        for_all_nb(dev)
+                i++;
+        if (i > MAX_NB) {
+                printk(KERN_ERR "PCI-GART: Too many northbridges (%ld). Disabled\n", i);
+                return -1;
+        }
+
         printk(KERN_INFO "PCI-DMA: using GART IOMMU.\n");
         aper_size = info.aper_size * 1024 * 1024;       
         iommu_size = check_iommu_size(info.aper_base, aper_size); 
diff --git a/arch/x86_64/kernel/pci-nommu.c b/arch/x86_64/kernel/pci-nommu.c
index 44adcc2d5e5b..1f6ecc62061d 100644
--- a/arch/x86_64/kernel/pci-nommu.c
+++ b/arch/x86_64/kernel/pci-nommu.c
@@ -12,9 +12,10 @@ static int
 check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size)
 {
         if (hwdev && bus + size > *hwdev->dma_mask) {
-                printk(KERN_ERR
-                    "nommu_%s: overflow %Lx+%lu of device mask %Lx\n",
-               name, (long long)bus, size, (long long)*hwdev->dma_mask);
+                if (*hwdev->dma_mask >= 0xffffffffULL)
+                        printk(KERN_ERR
+                            "nommu_%s: overflow %Lx+%lu of device mask %Lx\n",
+                                name, (long long)bus, size, (long long)*hwdev->dma_mask);
                 return 0;
         }
         return 1;
diff --git a/arch/x86_64/kernel/pmtimer.c b/arch/x86_64/kernel/pmtimer.c
index b0444a415bd6..bf421ed26808 100644
--- a/arch/x86_64/kernel/pmtimer.c
+++ b/arch/x86_64/kernel/pmtimer.c
@@ -68,7 +68,7 @@ int pmtimer_mark_offset(void)
         offset_delay = delta % (USEC_PER_SEC / HZ);
 
         rdtscll(tsc);
-        vxtime.last_tsc = tsc - offset_delay * cpu_khz;
+        vxtime.last_tsc = tsc - offset_delay * (u64)cpu_khz / 1000;
 
         /* don't calculate delay for first run,
            or if we've got less then a tick */
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index 1c44b53cb15b..fb903e65e079 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -575,8 +575,10 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
         prev->userrsp = read_pda(oldrsp); 
         write_pda(oldrsp, next->userrsp); 
         write_pda(pcurrent, next_p); 
+
         /* This must be here to ensure both math_state_restore() and
-           kernel_fpu_begin() work consistently. */
+           kernel_fpu_begin() work consistently. 
+           And the AMD workaround requires it to be after DS reload. */
         unlazy_fpu(prev_p);
         write_pda(kernelstack,
                   task_stack_page(next_p) + THREAD_SIZE - PDA_STACKOFFSET);
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index da8e7903d817..2d50024c9f30 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -600,12 +600,12 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
 
         if (unlikely(current->audit_context)) {
                 if (test_thread_flag(TIF_IA32)) {
-                        audit_syscall_entry(current, AUDIT_ARCH_I386,
+                        audit_syscall_entry(AUDIT_ARCH_I386,
                                             regs->orig_rax,
                                             regs->rbx, regs->rcx,
                                             regs->rdx, regs->rsi);
                 } else {
-                        audit_syscall_entry(current, AUDIT_ARCH_X86_64,
+                        audit_syscall_entry(AUDIT_ARCH_X86_64,
                                             regs->orig_rax,
                                             regs->rdi, regs->rsi,
                                             regs->rdx, regs->r10);
@@ -616,7 +616,7 @@ asmlinkage void syscall_trace_enter(struct pt_regs *regs)
 asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 {
         if (unlikely(current->audit_context))
-                audit_syscall_exit(current, AUDITSC_RESULT(regs->rax), regs->rax);
+                audit_syscall_exit(AUDITSC_RESULT(regs->rax), regs->rax);
 
         if ((test_thread_flag(TIF_SYSCALL_TRACE)
              || test_thread_flag(TIF_SINGLESTEP))
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index c50b06765a80..655b9192eeb3 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -571,17 +571,28 @@ static inline void copy_edd(void)
 #endif
 
 #define EBDA_ADDR_POINTER 0x40E
-static void __init reserve_ebda_region(void)
+
+unsigned __initdata ebda_addr;
+unsigned __initdata ebda_size;
+
+static void discover_ebda(void)
 {
-        unsigned int addr;
-        /** 
+        /*
          * there is a real-mode segmented pointer pointing to the 
          * 4K EBDA area at 0x40E
          */
-        addr = *(unsigned short *)phys_to_virt(EBDA_ADDR_POINTER);
-        addr <<= 4;
-        if (addr)
-                reserve_bootmem_generic(addr, PAGE_SIZE);
+        ebda_addr = *(unsigned short *)EBDA_ADDR_POINTER;
+        ebda_addr <<= 4;
+
+        ebda_size = *(unsigned short *)(unsigned long)ebda_addr;
+
+        /* Round EBDA up to pages */
+        if (ebda_size == 0)
+                ebda_size = 1;
+        ebda_size <<= 10;
+        ebda_size = round_up(ebda_size + (ebda_addr & ~PAGE_MASK), PAGE_SIZE);
+        if (ebda_size > 64*1024)
+                ebda_size = 64*1024;
 }
 
 void __init setup_arch(char **cmdline_p)
@@ -627,6 +638,8 @@ void __init setup_arch(char **cmdline_p)
 
         check_efer();
 
+        discover_ebda();
+
         init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
 
         dmi_scan_machine();
@@ -669,7 +682,8 @@ void __init setup_arch(char **cmdline_p)
         reserve_bootmem_generic(0, PAGE_SIZE);
 
         /* reserve ebda region */
-        reserve_ebda_region();
+        if (ebda_addr)
+                reserve_bootmem_generic(ebda_addr, ebda_size);
 
 #ifdef CONFIG_SMP
         /*
@@ -930,6 +944,10 @@ static int __init init_amd(struct cpuinfo_x86 *c)
         if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58))
                 set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability);
 
+        /* Enable workaround for FXSAVE leak */
+        if (c->x86 >= 6)
+                set_bit(X86_FEATURE_FXSAVE_LEAK, &c->x86_capability);
+
         r = get_model_name(c);
         if (!r) { 
                 switch (c->x86) { 
@@ -1033,7 +1051,7 @@ static void srat_detect_node(void)
            for now. */
         node = apicid_to_node[hard_smp_processor_id()];
         if (node == NUMA_NO_NODE)
-                node = 0;
+                node = first_node(node_online_map);
         numa_set_node(cpu, node);
 
         if (acpi_numa > 0)
@@ -1422,3 +1440,22 @@ struct seq_operations cpuinfo_op = {
         .show = show_cpuinfo,
 };
 
+#ifdef CONFIG_INPUT_PCSPKR
+#include <linux/platform_device.h>
+static __init int add_pcspkr(void)
+{
+        struct platform_device *pd;
+        int ret;
+
+        pd = platform_device_alloc("pcspkr", -1);
+        if (!pd)
+                return -ENOMEM;
+
+        ret = platform_device_add(pd);
+        if (ret)
+                platform_device_put(pd);
+
+        return ret;
+}
+device_initcall(add_pcspkr);
+#endif
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 6bda322d3caf..cea335e8746c 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -30,6 +30,7 @@
 #include <linux/moduleparam.h>
 #include <linux/nmi.h>
 #include <linux/kprobes.h>
+#include <linux/kexec.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
@@ -101,6 +102,8 @@ static inline void preempt_conditional_cli(struct pt_regs *regs)
 {
         if (regs->eflags & X86_EFLAGS_IF)
                 local_irq_disable();
+        /* Make sure to not schedule here because we could be running
+           on an exception stack. */
         preempt_enable_no_resched();
 }
 
@@ -384,6 +387,7 @@ void out_of_line_bug(void)
 
 static DEFINE_SPINLOCK(die_lock);
 static int die_owner = -1;
+static unsigned int die_nest_count;
 
 unsigned __kprobes long oops_begin(void)
 {
@@ -398,6 +402,7 @@ unsigned __kprobes long oops_begin(void)
                 else
                         spin_lock(&die_lock);
         }
+        die_nest_count++;
         die_owner = cpu;
         console_verbose();
         bust_spinlocks(1);
@@ -408,7 +413,13 @@ void __kprobes oops_end(unsigned long flags)
 { 
         die_owner = -1;
         bust_spinlocks(0);
-        spin_unlock_irqrestore(&die_lock, flags);
+        die_nest_count--;
+        if (die_nest_count)
+                /* We still own the lock */
+                local_irq_restore(flags);
+        else
+                /* Nest count reaches zero, release the lock. */
+                spin_unlock_irqrestore(&die_lock, flags);
         if (panic_on_oops)
                 panic("Oops");
 }
@@ -433,6 +444,8 @@ void __kprobes __die(const char * str, struct pt_regs * regs, long err)
         printk(KERN_ALERT "RIP ");
         printk_address(regs->rip); 
         printk(" RSP <%016lx>\n", regs->rsp); 
+        if (kexec_should_crash(current))
+                crash_kexec(regs);
 }
 
 void die(const char * str, struct pt_regs * regs, long err)
@@ -455,10 +468,14 @@ void __kprobes die_nmi(char *str, struct pt_regs *regs)
          */
         printk(str, safe_smp_processor_id());
         show_registers(regs);
+        if (kexec_should_crash(current))
+                crash_kexec(regs);
         if (panic_on_timeout || panic_on_oops)
                 panic("nmi watchdog");
         printk("console shuts up ...\n");
         oops_end(flags);
+        nmi_exit();
+        local_irq_enable();
         do_exit(SIGSEGV);
 }
 
@@ -468,8 +485,6 @@ static void __kprobes do_trap(int trapnr, int signr, char *str,
 {
         struct task_struct *tsk = current;
 
-        conditional_sti(regs);
-
         tsk->thread.error_code = error_code;
         tsk->thread.trap_no = trapnr;
 
@@ -506,6 +521,7 @@ asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
         if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
                                                         == NOTIFY_STOP) \
                 return; \
+        conditional_sti(regs);                                          \
         do_trap(trapnr, signr, str, regs, error_code, NULL); \
 }
 
@@ -520,6 +536,7 @@ asmlinkage void do_##name(struct pt_regs * regs, long error_code) \
         if (notify_die(DIE_TRAP, str, regs, error_code, trapnr, signr) \
                                                         == NOTIFY_STOP) \
                 return; \
+        conditional_sti(regs);                                          \
         do_trap(trapnr, signr, str, regs, error_code, &info); \
 }
 
@@ -533,7 +550,17 @@ DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
 DO_ERROR(11, SIGBUS,  "segment not present", segment_not_present)
 DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0)
 DO_ERROR(18, SIGSEGV, "reserved", reserved)
-DO_ERROR(12, SIGBUS,  "stack segment", stack_segment)
+
+/* Runs on IST stack */
+asmlinkage void do_stack_segment(struct pt_regs *regs, long error_code)
+{
+        if (notify_die(DIE_TRAP, "stack segment", regs, error_code,
+                        12, SIGBUS) == NOTIFY_STOP)
+                return;
+        preempt_conditional_sti(regs);
+        do_trap(12, SIGBUS, "stack segment", regs, error_code, NULL);
+        preempt_conditional_cli(regs);
+}
 
 asmlinkage void do_double_fault(struct pt_regs * regs, long error_code)
 {
@@ -667,8 +694,9 @@ asmlinkage void __kprobes do_int3(struct pt_regs * regs, long error_code)
         if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP) == NOTIFY_STOP) {
                 return;
         }
+        preempt_conditional_sti(regs);
         do_trap(3, SIGTRAP, "int3", regs, error_code, NULL);
-        return;
+        preempt_conditional_cli(regs);
 }
 
 /* Help handler running on IST stack to switch back to user stack
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index cc02573a3271..b2fac14baac0 100644
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -188,11 +188,13 @@ void __init setup_node_zones(int nodeid)
            memory. */
         memmapsize = sizeof(struct page) * (end_pfn-start_pfn);
         limit = end_pfn << PAGE_SHIFT;
+#ifdef CONFIG_FLAT_NODE_MEM_MAP
         NODE_DATA(nodeid)->node_mem_map = 
                 __alloc_bootmem_core(NODE_DATA(nodeid)->bdata, 
                                 memmapsize, SMP_CACHE_BYTES, 
                                 round_down(limit - memmapsize, PAGE_SIZE), 
                                 limit);
+#endif
 
         size_zones(zones, holes, start_pfn, end_pfn);
         free_area_init_node(nodeid, NODE_DATA(nodeid), zones,
diff --git a/arch/x86_64/mm/srat.c b/arch/x86_64/mm/srat.c
index 15ae9fcd65a7..474df22c6ed2 100644
--- a/arch/x86_64/mm/srat.c
+++ b/arch/x86_64/mm/srat.c
@@ -34,7 +34,10 @@ static nodemask_t nodes_found __initdata;
 static struct bootnode nodes[MAX_NUMNODES] __initdata;
 static struct bootnode nodes_add[MAX_NUMNODES] __initdata;
 static int found_add_area __initdata;
-int hotadd_percent __initdata = 10;
+int hotadd_percent __initdata = 0;
+#ifndef RESERVE_HOTADD
+#define hotadd_percent 0        /* Ignore all settings */
+#endif
 static u8 pxm2node[256] = { [0 ... 255] = 0xff };
 
 /* Too small nodes confuse the VM badly. Usually they result
@@ -103,6 +106,7 @@ static __init void bad_srat(void)
         int i;
         printk(KERN_ERR "SRAT: SRAT not used.\n");
         acpi_numa = -1;
+        found_add_area = 0;
         for (i = 0; i < MAX_LOCAL_APIC; i++)
                 apicid_to_node[i] = NUMA_NO_NODE;
         for (i = 0; i < MAX_NUMNODES; i++)
@@ -154,7 +158,8 @@ acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa)
         int pxm, node;
         if (srat_disabled())
                 return;
-        if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) {                bad_srat();
+        if (pa->header.length != sizeof(struct acpi_table_processor_affinity)) {
+                bad_srat();
                 return;
         }
         if (pa->flags.enabled == 0)
@@ -191,15 +196,17 @@ static int hotadd_enough_memory(struct bootnode *nd)
         allowed = (end_pfn - e820_hole_size(0, end_pfn)) * PAGE_SIZE;
         allowed = (allowed / 100) * hotadd_percent;
         if (allocated + mem > allowed) {
+                unsigned long range;
                 /* Give them at least part of their hotadd memory upto hotadd_percent
                    It would be better to spread the limit out
                    over multiple hotplug areas, but that is too complicated
                    right now */
                 if (allocated >= allowed)
                         return 0;
-                pages = (allowed - allocated + mem) / sizeof(struct page);
+                range = allowed - allocated;
+                pages = (range / PAGE_SIZE);
                 mem = pages * sizeof(struct page);
-                nd->end = nd->start + pages*PAGE_SIZE;
+                nd->end = nd->start + range;
         }
         /* Not completely fool proof, but a good sanity check */
         addr = find_e820_area(last_area_end, end_pfn<<PAGE_SHIFT, mem);
@@ -392,8 +399,10 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end)
         /* First clean up the node list */
         for (i = 0; i < MAX_NUMNODES; i++) {
                 cutoff_node(i, start, end);
-                if ((nodes[i].end - nodes[i].start) < NODE_MIN_SIZE)
+                if ((nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) {
                         unparse_node(i);
+                        node_set_offline(i);
+                }
         }
 
         if (acpi_numa <= 0)