From: Avi Kivity <[email protected]> Let it compute modrm_seg instead, and have the caller apply it.
Signed-off-by: Avi Kivity <[email protected]> diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 3c7dd29..1aca0b3 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -193,6 +193,7 @@ struct decode_cache { u8 modrm_mod; u8 modrm_reg; u8 modrm_rm; + u8 modrm_seg; u8 use_modrm_ea; bool rip_relative; unsigned long modrm_ea; diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index acbf283..fea3980 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -593,6 +593,7 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt, c->modrm_rm |= (c->modrm & 0x07); c->modrm_ea = 0; c->use_modrm_ea = 1; + c->modrm_seg = VCPU_SREG_DS; if (c->modrm_mod == 3) { c->modrm_ptr = decode_register(c->modrm_rm, @@ -649,8 +650,7 @@ static int decode_modrm(struct x86_emulate_ctxt *ctxt, } if (c->modrm_rm == 2 || c->modrm_rm == 3 || (c->modrm_rm == 6 && c->modrm_mod != 0)) - if (!c->has_seg_override) - set_seg_override(c, VCPU_SREG_SS); + c->modrm_seg = VCPU_SREG_SS; c->modrm_ea = (u16)c->modrm_ea; } else { /* 32/64-bit ModR/M decode. */ @@ -2406,9 +2406,11 @@ done_prefixes: c->op_bytes = 8; /* ModRM and SIB bytes. */ - if (c->d & ModRM) + if (c->d & ModRM) { rc = decode_modrm(ctxt, ops); - else if (c->d & MemAbs) + if (!c->has_seg_override) + set_seg_override(c, c->modrm_seg); + } else if (c->d & MemAbs) rc = decode_abs(ctxt, ops); if (rc != X86EMUL_CONTINUE) goto done; -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
