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Subject[PATCH] Use global TLB flushes in MTRR code
[probably stable material too]

Use global TLB flushes in MTRR code

Obviously kernel mappings should be flushed here too.

Signed-off-by: Andi Kleen <ak@suse.de>

---
arch/x86/kernel/cpu/mtrr/generic.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux/arch/x86/kernel/cpu/mtrr/generic.c
===================================================================
--- linux.orig/arch/x86/kernel/cpu/mtrr/generic.c
+++ linux/arch/x86/kernel/cpu/mtrr/generic.c
@@ -356,7 +356,7 @@ static void prepare_set(void) __acquires
}

/* Flush all TLBs via a mov %cr3, %reg; mov %reg, %cr3 */
- __flush_tlb();
+ __flush_tlb_all();

/* Save MTRR state */
rdmsr(MTRRdefType_MSR, deftype_lo, deftype_hi);
@@ -368,7 +368,7 @@ static void prepare_set(void) __acquires
static void post_set(void) __releases(set_atomicity_lock)
{
/* Flush TLBs (no need to flush caches - they are disabled) */
- __flush_tlb();
+ __flush_tlb_all();

/* Intel (P6) standard MTRRs */
mtrr_wrmsr(MTRRdefType_MSR, deftype_lo, deftype_hi);

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