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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-06-19 11:40:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-09 11:18:27 -0700 |
| commit | a46438472e31a9766352c97e37caaa2848ddea10 (patch) | |
| tree | 2a12e9195deaff0670a4bbf20c7e81de2bf60bfd | |
| parent | 16f225f355b19890d4e09b345c3fd85496fa4c66 (diff) | |
| download | lwn-a46438472e31a9766352c97e37caaa2848ddea10.tar.gz lwn-a46438472e31a9766352c97e37caaa2848ddea10.zip | |
KVM: x86: preserve the high 32-bits of the PAT register
commit 7cb060a91c0efc5ff94f83c6df3ed705e143cdb9 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>
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index bef5dd66d9f1..3092300a07cd 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -462,7 +462,7 @@ 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]; |