[PATCH 3.11 052/128] KVM: x86: Increase the number of fixed MTRR regs to 10

From: Luis Henriques
Date: Thu Jul 24 2014 - 05:47:49 EST -stable review patch. If anyone has any objections, please let me know.


From: Nadav Amit <namit@xxxxxxxxxxxxxxxxx>

commit 682367c494869008eb89ef733f196e99415ae862 upstream.

Recent Intel CPUs have 10 variable range MTRRs. Since operating systems
sometime make assumptions on CPUs while they ignore capability MSRs, it is
better for KVM to be consistent with recent CPUs. Reporting more MTRRs than
actually supported has no functional implications.

Signed-off-by: Nadav Amit <namit@xxxxxxxxxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
arch/x86/include/asm/kvm_host.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index f87f7fcefa0a..ec71e13240b9 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -92,7 +92,7 @@
-#define KVM_NR_VAR_MTRR 8
+#define KVM_NR_VAR_MTRR 10

#define ASYNC_PF_PER_VCPU 64


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