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KVM: x86: preserve the high 32-bits of the PAT register

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commit 7cb060a91c upstream.

KVM does not really do much with the PAT, so this went unnoticed for a
long time.  It is exposed however if you try to do rdmsr on the PAT
register.

Reported-by: Valentine Sinitsyn <valentine.sinitsyn@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paolo Bonzini
2014-06-19 11:40:18 +02:00
committed by Greg Kroah-Hartman
parent 470d85691e
commit 1cf3347a2e
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/kvm_host.h
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@@ -445,7 +445,7 @@ struct kvm_vcpu_arch {
bool nmi_injected; /* Trying to inject an NMI this entry */
struct mtrr_state_type mtrr_state;
u32 pat;
u64 pat;
int switch_db_regs;
unsigned long db[KVM_NR_DB_REGS];