[PATCHv3 09/10] KVM: x86 emulator: fix RDPMC privilege check

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Avi Kivity <avi@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
---
 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,
-- 
1.7.7.1

--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux