Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: fix early panic with boot option "nosmp"
  x86/oprofile: fix Intel cpu family 6 detection
  oprofile: fix CPU unplug panic in ppro_stop()
  AMD IOMMU: fix possible race while accessing iommu->need_sync
  AMD IOMMU: set device table entry for aliased devices
  AMD IOMMU: struct amd_iommu remove padding on 64 bit
  x86: fix broken flushing in GART nofullflush path
  x86: fix dma_mapping_error for 32bit x86

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index f98f4e1dba09..0f4c1fd5a1f4 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -604,6 +604,9 @@ static void __init __get_smp_config(unsigned int early)
                 printk(KERN_INFO "Using ACPI for processor (LAPIC) "
                        "configuration information\n");
 
+        if (!mpf)
+                return;
+
         printk(KERN_INFO "Intel MultiProcessor Specification v1.%d\n",
                mpf->mpf_specification);
 #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32)