diff options
Diffstat (limited to 'arch/x86/kvm/emulate.c')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 987fdb379df6..d28104924255 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1533,6 +1533,15 @@ static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt, if (rpl > cpl || dpl != cpl) goto exception; } + /* in long-mode d/b must be clear if l is set */ + if (seg_desc.d && seg_desc.l) { + u64 efer = 0; + + ctxt->ops->get_msr(ctxt, MSR_EFER, &efer); + if (efer & EFER_LMA) + goto exception; + } + /* CS(RPL) <- CPL */ selector = (selector & 0xfffc) | cpl; break; |