Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull miscellaneous x86 fixes from Peter Anvin:
 "The biggest ones are fixing suspend/resume breakage on 32 bits, and an
  interrim fix for mapping over holes that allows AMD kit with more than
  1 TB.

  A final solution for the latter is in the works, but involves some
  fairly invasive changes that will probably mean it will only be
  appropriate for 3.8."

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, MCE: Remove bios_cmci_threshold sysfs attribute
  x86, amd, mce: Avoid NULL pointer reference on CPU northbridge lookup
  x86: Exclude E820_RESERVED regions and memory holes above 4 GB from direct mapping.
  x86/cache_info: Use ARRAY_SIZE() in amd_l3_attrs()
  x86/reboot: Remove quirk entry for SBC FITPC
  x86, suspend: Correct the restore of CR4, EFER; skip computing EFLAGS.ID

diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 9a7c90d..93c5451 100644 (file)
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -991,7 +991,7 @@ static struct attribute ** __cpuinit amd_l3_attrs(void)
        if (attrs)
                return attrs;
 
-       n = sizeof (default_attrs) / sizeof (struct attribute *);
+       n = ARRAY_SIZE(default_attrs);
 
        if (amd_nb_has_feature(AMD_NB_L3_INDEX_DISABLE))
                n += 2;

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 29e87d3..46cbf86 100644 (file)
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2209,11 +2209,6 @@ static struct dev_ext_attribute dev_attr_cmci_disabled = {
        &mce_cmci_disabled
 };
 
-static struct dev_ext_attribute dev_attr_bios_cmci_threshold = {
-       __ATTR(bios_cmci_threshold, 0444, device_show_int, NULL),
-       &mce_bios_cmci_threshold
-};
-
 static struct device_attribute *mce_device_attrs[] = {
        &dev_attr_tolerant.attr,
        &dev_attr_check_interval.attr,
@@ -2222,7 +2217,6 @@ static struct device_attribute *mce_device_attrs[] = {
        &dev_attr_dont_log_ce.attr,
        &dev_attr_ignore_ce.attr,
        &dev_attr_cmci_disabled.attr,
-       &dev_attr_bios_cmci_threshold.attr,
        NULL
 };
 

diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c
index c4e916d..698b6ec 100644 (file)
--- a/arch/x86/kernel/cpu/mcheck/mce_amd.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c
@@ -576,12 +576,10 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
        int err = 0;
 
        if (shared_bank[bank]) {
-
                nb = node_to_amd_nb(amd_get_nb_id(cpu));
-               WARN_ON(!nb);
 
                /* threshold descriptor already initialized on this node? */
-               if (nb->bank4) {
+               if (nb && nb->bank4) {
                        /* yes, use it */
                        b = nb->bank4;
                        err = kobject_add(b->kobj, &dev->kobj, name);
@@ -615,8 +613,10 @@ static __cpuinit int threshold_create_bank(unsigned int cpu, unsigned int bank)
                atomic_set(&b->cpus, 1);
 
                /* nb is already initialized, see above */
-               WARN_ON(nb->bank4);
-               nb->bank4 = b;
+               if (nb) {
+                       WARN_ON(nb->bank4);
+                       nb->bank4 = b;
+               }
        }
 
        err = allocate_threshold_blocks(cpu, bank, 0,

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 52190a9..4e8ba39 100644 (file)
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -358,14 +358,6 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
                        DMI_MATCH(DMI_PRODUCT_NAME, "VGN-Z540N"),
                },
        },
-       {       /* Handle problems with rebooting on CompuLab SBC-FITPC2 */
-               .callback = set_bios_reboot,
-               .ident = "CompuLab SBC-FITPC2",
-               .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "CompuLab"),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "SBC-FITPC2"),
-               },
-       },
        {       /* Handle problems with rebooting on ASUS P4S800 */
                .callback = set_bios_reboot,
                .ident = "ASUS P4S800",

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index a2bb18e..468e98d 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -920,8 +920,21 @@ void __init setup_arch(char **cmdline_p)
 
 #ifdef CONFIG_X86_64
        if (max_pfn > max_low_pfn) {
-               max_pfn_mapped = init_memory_mapping(1UL<<32,
-                                                    max_pfn<<PAGE_SHIFT);
+               int i;
+               for (i = 0; i < e820.nr_map; i++) {
+                       struct e820entry *ei = &e820.map[i];
+
+                       if (ei->addr + ei->size <= 1UL << 32)
+                               continue;
+
+                       if (ei->type == E820_RESERVED)
+                               continue;
+
+                       max_pfn_mapped = init_memory_mapping(
+                               ei->addr < 1UL << 32 ? 1UL << 32 : ei->addr,
+                               ei->addr + ei->size);
+               }
+
                /* can we preseve max_low_pfn ?*/
                max_low_pfn = max_pfn;
        }

diff --git a/arch/x86/realmode/rm/wakeup_asm.S b/arch/x86/realmode/rm/wakeup_asm.S
index e56479e..9e7e147 100644 (file)
--- a/arch/x86/realmode/rm/wakeup_asm.S
+++ b/arch/x86/realmode/rm/wakeup_asm.S
@@ -74,18 +74,9 @@ ENTRY(wakeup_start)
 
        lidtl   wakeup_idt
 
-       /* Clear the EFLAGS but remember if we have EFLAGS.ID */
-       movl $X86_EFLAGS_ID, %ecx
-       pushl %ecx
-       popfl
-       pushfl
-       popl %edi
+       /* Clear the EFLAGS */
        pushl $0
        popfl
-       pushfl
-       popl %edx
-       xorl %edx, %edi
-       andl %ecx, %edi         /* %edi is zero iff CPUID & %cr4 are missing */
 
        /* Check header signature... */
        movl    signature, %eax
@@ -120,12 +111,12 @@ ENTRY(wakeup_start)
        movl    %eax, %cr3
 
        btl     $WAKEUP_BEHAVIOR_RESTORE_CR4, %edi
-       jz      1f
+       jnc     1f
        movl    pmode_cr4, %eax
        movl    %eax, %cr4
 1:
        btl     $WAKEUP_BEHAVIOR_RESTORE_EFER, %edi
-       jz      1f
+       jnc     1f
        movl    pmode_efer, %eax
        movl    pmode_efer + 4, %edx
        movl    $MSR_EFER, %ecx