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-rw-r--r--arch/i386/kernel/cpu/common.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 2799baaadf45f..d9f3e3c31f054 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -184,7 +184,16 @@ static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c, int early)
static int __init x86_fxsr_setup(char * s)
{
+ /* Tell all the other CPU's to not use it... */
disable_x86_fxsr = 1;
+
+ /*
+ * ... and clear the bits early in the boot_cpu_data
+ * so that the bootup process doesn't try to do this
+ * either.
+ */
+ clear_bit(X86_FEATURE_FXSR, boot_cpu_data.x86_capability);
+ clear_bit(X86_FEATURE_XMM, boot_cpu_data.x86_capability);
return 1;
}
__setup("nofxsr", x86_fxsr_setup);
@@ -660,8 +669,7 @@ old_gdt:
*/
atomic_inc(&init_mm.mm_count);
current->active_mm = &init_mm;
- if (current->mm)
- BUG();
+ BUG_ON(current->mm);
enter_lazy_tlb(&init_mm, current);
load_esp0(t, thread);