| commit | 0373fc0c209db541ec115700fbdb50e85b774a02 | |
| author | Avi Kivity <avi@redhat.com> | |
| Fri, 18 Sep 2009 23:07:59 +0000 (18 20:07 -0300) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 5 Oct 2009 15:27:52 +0000 (5 08:27 -0700) | ||
| tree | 02bd0b424d82b646eed98eb3ee0410f9cffb90d3 | treesnapshot (tar.gz zip) |
| parent | cb2a1b63162335f8a693fcbd6317e23b675a1970 | commitdiff |
KVM: VMX: Check cpl before emulating debug register access
(cherry picked from commit 0a79b009525b160081d75cef5dbf45817956acf2)
Debug registers may only be accessed from cpl 0. Unfortunately, vmx will
code to emulate the instruction even though it was issued from guest
userspace, possibly leading to an unexpected trap later.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
(cherry picked from commit 0a79b009525b160081d75cef5dbf45817956acf2)
Debug registers may only be accessed from cpl 0. Unfortunately, vmx will
code to emulate the instruction even though it was issued from guest
userspace, possibly leading to an unexpected trap later.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| arch/x86/include/asm/kvm_host.h | diffblobblamehistory | |
| arch/x86/kvm/vmx.c | diffblobblamehistory | |
| arch/x86/kvm/x86.c | diffblobblamehistory |