11 files changed, 47 insertions, 15 deletions

diff --git a/arch/alpha/Makefile b/arch/alpha/Makefile
index 4e1a8e2c4541..4759fe751aa1 100644
--- a/arch/alpha/Makefile
+++ b/arch/alpha/Makefile
@@ -13,6 +13,7 @@ NM := $(NM) -B
 LDFLAGS_vmlinux := -static -N #-relax
 CHECKFLAGS      += -D__alpha__ -m64
 cflags-y        := -pipe -mno-fp-regs -ffixed-8 -msmall-data
+cflags-y        += $(call cc-option, -fno-jump-tables)
 
 cpuflags-$(CONFIG_ALPHA_EV4)            := -mcpu=ev4
 cpuflags-$(CONFIG_ALPHA_EV5)            := -mcpu=ev5
diff --git a/arch/alpha/kernel/core_t2.c b/arch/alpha/kernel/core_t2.c
index c0750291b44a..d9980d47ab81 100644
--- a/arch/alpha/kernel/core_t2.c
+++ b/arch/alpha/kernel/core_t2.c
@@ -74,6 +74,8 @@
 # define DBG(args)
 #endif
 
+DEFINE_SPINLOCK(t2_hae_lock);
+
 static volatile unsigned int t2_mcheck_any_expected;
 static volatile unsigned int t2_mcheck_last_taken;
 
diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 36ab22a7ea12..5cf45fc51343 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -71,6 +71,23 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82378, quirk_i
 static void __init
 quirk_cypress(struct pci_dev *dev)
 {
+        /* The Notorious Cy82C693 chip.  */
+
+        /* The generic legacy mode IDE fixup in drivers/pci/probe.c
+           doesn't work correctly with the Cypress IDE controller as
+           it has non-standard register layout.  Fix that.  */
+        if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE) {
+                dev->resource[2].start = dev->resource[3].start = 0;
+                dev->resource[2].end = dev->resource[3].end = 0;
+                dev->resource[2].flags = dev->resource[3].flags = 0;
+                if (PCI_FUNC(dev->devfn) == 2) {
+                        dev->resource[0].start = 0x170;
+                        dev->resource[0].end = 0x177;
+                        dev->resource[1].start = 0x376;
+                        dev->resource[1].end = 0x376;
+                }
+        }
+
         /* The Cypress bridge responds on the PCI bus in the address range
            0xffff0000-0xffffffff (conventional x86 BIOS ROM).  There is no
            way to turn this off.  The bridge also supports several extended
diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index dc57790250d2..c778779007fc 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -447,7 +447,7 @@ struct unaligned_stat {
 
 
 /* Macro for exception fixup code to access integer registers.  */
-#define una_reg(r)  (regs->regs[(r) >= 16 && (r) <= 18 ? (r)+19 : (r)])
+#define una_reg(r)  (_regs[(r) >= 16 && (r) <= 18 ? (r)+19 : (r)])
 
 
 asmlinkage void
@@ -456,6 +456,7 @@ do_entUna(void * va, unsigned long opcode, unsigned long reg,
 {
         long error, tmp1, tmp2, tmp3, tmp4;
         unsigned long pc = regs->pc - 4;
+        unsigned long *_regs = regs->regs;
         const struct exception_table_entry *fixup;
 
         unaligned[0].count++;
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index 49d3120415eb..6dd886c5d860 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -512,6 +512,8 @@ static ssize_t sn2_ptc_proc_write(struct file *file, const char __user *user, si
         int cpu;
         char optstr[64];
 
+        if (count > sizeof(optstr))
+                return -EINVAL;
         if (copy_from_user(optstr, user, count))
                 return -EFAULT;
         optstr[count - 1] = '\0';
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index c21a626af676..ce245a850db2 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -142,7 +142,7 @@ static void dump_one_vdso_page(struct page *pg, struct page *upg)
         printk("kpg: %p (c:%d,f:%08lx)", __va(page_to_pfn(pg) << PAGE_SHIFT),
                page_count(pg),
                pg->flags);
-        if (upg/* && pg != upg*/) {
+        if (upg && !IS_ERR(upg) /* && pg != upg*/) {
                 printk(" upg: %p (c:%d,f:%08lx)", __va(page_to_pfn(upg)
                                                        << PAGE_SHIFT),
                        page_count(upg),
diff --git a/arch/x86/kernel/geode_32.c b/arch/x86/kernel/geode_32.c
index e8edd63ab000..9b08e852fd1a 100644
--- a/arch/x86/kernel/geode_32.c
+++ b/arch/x86/kernel/geode_32.c
@@ -166,6 +166,8 @@ int geode_has_vsa2(void)
         static int has_vsa2 = -1;
 
         if (has_vsa2 == -1) {
+                u16 val;
+
                 /*
                  * The VSA has virtual registers that we can query for a
                  * signature.
@@ -173,7 +175,8 @@ int geode_has_vsa2(void)
                 outw(VSA_VR_UNLOCK, VSA_VRC_INDEX);
                 outw(VSA_VR_SIGNATURE, VSA_VRC_INDEX);
 
-                has_vsa2 = (inw(VSA_VRC_DATA) == VSA_SIG);
+                val = inw(VSA_VRC_DATA);
+                has_vsa2 = (val == AMD_VSA_SIG || val == GSW_VSA_SIG);
         }
 
         return has_vsa2;
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 6d5483356e74..e2db9ac5c61c 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -333,6 +333,7 @@ void flush_thread(void)
         /*
          * Forget coprocessor state..
          */
+        tsk->fpu_counter = 0;
         clear_fpu(tsk);
         clear_used_math();
 }
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index ac54ff56df80..c6eb5c91e5f6 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -294,6 +294,7 @@ void flush_thread(void)
         /*
          * Forget coprocessor state..
          */
+        tsk->fpu_counter = 0;
         clear_fpu(tsk);
         clear_used_math();
 }
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 2c5f8b213e86..5a2f8e063887 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -532,10 +532,16 @@ static void __init reserve_crashkernel(void)
                                         (unsigned long)(crash_size >> 20),
                                         (unsigned long)(crash_base >> 20),
                                         (unsigned long)(total_mem >> 20));
+
+                        if (reserve_bootmem(crash_base, crash_size,
+                                        BOOTMEM_EXCLUSIVE) < 0) {
+                                printk(KERN_INFO "crashkernel reservation "
+                                        "failed - memory is in use\n");
+                                return;
+                        }
+
                         crashk_res.start = crash_base;
                         crashk_res.end   = crash_base + crash_size - 1;
-                        reserve_bootmem(crash_base, crash_size,
-                                        BOOTMEM_DEFAULT);
                 } else
                         printk(KERN_INFO "crashkernel reservation failed - "
                                         "you have to specify a base address\n");
diff --git a/arch/x86/kernel/tsc_32.c b/arch/x86/kernel/tsc_32.c
index 068759db63dd..65b70637ad97 100644
--- a/arch/x86/kernel/tsc_32.c
+++ b/arch/x86/kernel/tsc_32.c
@@ -14,7 +14,10 @@
 
 #include "mach_timer.h"
 
-static int tsc_disabled;
+/* native_sched_clock() is called before tsc_init(), so
+   we must start with the TSC soft disabled to prevent
+   erroneous rdtsc usage on !cpu_has_tsc processors */
+static int tsc_disabled = -1;
 
 /*
  * On some systems the TSC frequency does not
@@ -402,25 +405,20 @@ void __init tsc_init(void)
 {
         int cpu;
 
-        if (!cpu_has_tsc || tsc_disabled) {
-                /* Disable the TSC in case of !cpu_has_tsc */
-                tsc_disabled = 1;
+        if (!cpu_has_tsc || tsc_disabled > 0)
                 return;
-        }
 
         cpu_khz = calculate_cpu_khz();
         tsc_khz = cpu_khz;
 
         if (!cpu_khz) {
                 mark_tsc_unstable("could not calculate TSC khz");
-                /*
-                 * We need to disable the TSC completely in this case
-                 * to prevent sched_clock() from using it.
-                 */
-                tsc_disabled = 1;
                 return;
         }
 
+        /* now allow native_sched_clock() to use rdtsc */
+        tsc_disabled = 0;
+
         printk("Detected %lu.%03lu MHz processor.\n",
                                 (unsigned long)cpu_khz / 1000,
                                 (unsigned long)cpu_khz % 1000);