diff options
author | James Bottomley <JBottomley@Parallels.com> | 2013-06-26 23:08:22 -0700 |
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committer | James Bottomley <JBottomley@Parallels.com> | 2013-06-26 23:08:22 -0700 |
commit | a9e94ec3504ead4b87a929bc57f5aa99a6590437 (patch) | |
tree | b6e7aaec0e844dc066e93296a85e5769542ef525 /arch/x86/kvm/emulate.c | |
parent | 36a279686bc02d340eb213a9f2a0b67e50de64b4 (diff) | |
parent | 2884d4230867c8a46cf701214051e923301e7429 (diff) |
Merge tag 'fcoe1' into fixes
This patch fixes a critical bug that was introduced in 3.9
related to VLAN tagging FCoE frames.
Diffstat (limited to 'arch/x86/kvm/emulate.c')
-rw-r--r-- | arch/x86/kvm/emulate.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 8db0010ed15..5953dcea752 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1240,9 +1240,12 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt, ctxt->modrm_seg = VCPU_SREG_DS; if (ctxt->modrm_mod == 3) { + int highbyte_regs = ctxt->rex_prefix == 0; + op->type = OP_REG; op->bytes = (ctxt->d & ByteOp) ? 1 : ctxt->op_bytes; - op->addr.reg = decode_register(ctxt, ctxt->modrm_rm, ctxt->d & ByteOp); + op->addr.reg = decode_register(ctxt, ctxt->modrm_rm, + highbyte_regs && (ctxt->d & ByteOp)); if (ctxt->d & Sse) { op->type = OP_XMM; op->bytes = 16; @@ -3997,7 +4000,8 @@ static const struct opcode twobyte_table[256] = { DI(ImplicitOps | Priv, invd), DI(ImplicitOps | Priv, wbinvd), N, N, N, D(ImplicitOps | ModRM), N, N, /* 0x10 - 0x1F */ - N, N, N, N, N, N, N, N, D(ImplicitOps | ModRM), N, N, N, N, N, N, N, + N, N, N, N, N, N, N, N, + D(ImplicitOps | ModRM), N, N, N, N, N, N, D(ImplicitOps | ModRM), /* 0x20 - 0x2F */ DIP(ModRM | DstMem | Priv | Op3264, cr_read, check_cr_read), DIP(ModRM | DstMem | Priv | Op3264, dr_read, check_dr_read), @@ -4836,6 +4840,7 @@ twobyte_insn: case 0x08: /* invd */ case 0x0d: /* GrpP (prefetch) */ case 0x18: /* Grp16 (prefetch/nop) */ + case 0x1f: /* nop */ break; case 0x20: /* mov cr, reg */ ctxt->dst.val = ops->get_cr(ctxt, ctxt->modrm_reg); |