lkml.org 
[lkml]   [2011]   [Nov]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 8/9] KVM: x86 emulator: fix RDPMC privilege check
Date
From: Avi Kivity <avi@redhat.com>

RDPMC is only privileged if CR4.PCE=0. check_rdpmc() already implements this,
so all we need to do is drop the Priv flag.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
arch/x86/kvm/emulate.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 8547958..c0ee85b 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -3254,7 +3254,7 @@ static struct opcode twobyte_table[256] = {
DI(ImplicitOps | Priv, wrmsr),
IIP(ImplicitOps, em_rdtsc, rdtsc, check_rdtsc),
DI(ImplicitOps | Priv, rdmsr),
- DIP(ImplicitOps | Priv, rdpmc, check_rdpmc),
+ DIP(ImplicitOps, rdpmc, check_rdpmc),
I(ImplicitOps | VendorSpecific, em_sysenter),
I(ImplicitOps | Priv | VendorSpecific, em_sysexit),
N, N,
--
1.7.5.3


\
 
 \ /
  Last update: 2011-11-03 13:35    [W:1.046 / U:0.416 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site