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| author | Gleb Natapov <gleb@redhat.com> | 2010-03-18 13:20:10 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-17 09:16:05 (GMT) |
| commit | 6aebfa6ea75f9a02a0339e733090dd40d6f2edfd (patch) | |
| tree | f8f1fb2c520199a50f973c4ad36716ddc186f423 /arch | |
| parent | ab8557b2b361c8bb2e2421c791c8f6c4f6ba3d08 (diff) | |
| download | linux-fsl-qoriq-6aebfa6ea75f9a02a0339e733090dd40d6f2edfd.tar.xz | |
KVM: x86 emulator: inject #UD on access to non-existing CR
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index fa4604e..836e97b 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -2520,6 +2520,13 @@ twobyte_insn: c->dst.type = OP_NONE; break; case 0x20: /* mov cr, reg */ + switch (c->modrm_reg) { + case 1: + case 5 ... 7: + case 9 ... 15: + kvm_queue_exception(ctxt->vcpu, UD_VECTOR); + goto done; + } c->regs[c->modrm_rm] = ops->get_cr(c->modrm_reg, ctxt->vcpu); c->dst.type = OP_NONE; /* no writeback */ break; |