tree 69e1fb9865b3331f8a933fa9198b9245a914ea34
parent bc7a8660df62da3fb5cad025322eda75fbee8731
author Avi Kivity <avi@redhat.com> 1237839224 +0200
committer Avi Kivity <avi@redhat.com> 1237885395 +0200

KVM: VMX: Don't allow uninhibited access to EFER on i386

vmx_set_msr() does not allow i386 guests to touch EFER, but they can still
do so through the default: label in the switch.  If they set EFER_LME, they
can oops the host.

Fix by having EFER access through the normal channel (which will check for
EFER_LME) even on i386.

Reported-and-tested-by: Benjamin Gilbert <bgilbert@cs.cmu.edu>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>