This is a note to let you know that I've just added the patch titled
KVM: x86: preserve the high 32-bits of the PAT register
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-x86-preserve-the-high-32-bits-of-the-pat-register.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7cb060a91c0efc5ff94f83c6df3ed705e143cdb9 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Date: Thu, 19 Jun 2014 11:40:18 +0200
Subject: KVM: x86: preserve the high 32-bits of the PAT register
From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/kvm_host.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -436,7 +436,7 @@ 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];
Patches currently in stable-queue which might be from pbonzini@xxxxxxxxxx are
queue-3.4/kvm-x86-preserve-the-high-32-bits-of-the-pat-register.patch
queue-3.4/kvm-x86-increase-the-number-of-fixed-mtrr-regs-to-10.patch
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