diff options
| author | Avi Kivity <avi@qumranet.com> | 2008-06-16 06:13:41 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-07-20 11:42:33 +0200 |
| commit | 8684c0af0b2bab770c257e2a04e1546eed35fa56 (patch) | |
| tree | ce11e5f74ed45db49aeeee616f856f1059206c8f /arch | |
| parent | KVM: x86 emulator: emulate nop and xchg reg, acc (opcodes 0x90 - 0x97) (diff) | |
| download | linux-8684c0af0b2bab770c257e2a04e1546eed35fa56.tar.xz linux-8684c0af0b2bab770c257e2a04e1546eed35fa56.zip | |
KVM: x86 emulator: handle undecoded rex.b with r/m = 5 in certain cases
x86_64 does not decode rex.b in certain cases, where the r/m field = 5.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/x86_emulate.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c index 28082913919e..3721cfddc973 100644 --- a/arch/x86/kvm/x86_emulate.c +++ b/arch/x86/kvm/x86_emulate.c @@ -750,6 +750,7 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt, switch (base_reg) { case 5: + case 13: if (c->modrm_mod != 0) c->modrm_ea += c->regs[base_reg]; else @@ -767,6 +768,7 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt, } break; case 5: + case 13: if (c->modrm_mod != 0) c->modrm_ea += c->regs[c->modrm_rm]; else if (ctxt->mode == X86EMUL_MODE_PROT64) |