From: Paolo Bonzini Date: Thu, 19 Jun 2014 09:40:18 +0000 (+0200) Subject: KVM: x86: preserve the high 32-bits of the PAT register X-Git-Tag: v3.2.62~90 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23f2204d5d91dc5c383fbc3707cc0694688e04c2;p=thirdparty%2Fkernel%2Fstable.git 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 Signed-off-by: Paolo Bonzini Signed-off-by: Ben Hutchings --- diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index e350e68e00d61..b3eb9a75d885b 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -418,7 +418,7 @@ 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];