[PATCH] KVM: emulate: do not return X86EMUL_PROPAGATE_FAULT explicitly

From: Paolo Bonzini
Date: Wed Aug 20 2014 - 07:25:04 EST


Always get it through emulate_exception or emulate_ts. This
ensures that the ctxt->exception fields have been populated.

Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/kvm/emulate.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index ef297919a691..4fbf4b598f92 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1549,8 +1549,7 @@ load:
ctxt->ops->set_segment(ctxt, selector, &seg_desc, base3, seg);
return X86EMUL_CONTINUE;
exception:
- emulate_exception(ctxt, err_vec, err_code, true);
- return X86EMUL_PROPAGATE_FAULT;
+ return emulate_exception(ctxt, err_vec, err_code, true);
}

static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt,
@@ -2723,8 +2722,7 @@ static int emulator_do_task_switch(struct x86_emulate_ctxt *ctxt,
if (!next_tss_desc.p ||
((desc_limit < 0x67 && (next_tss_desc.type & 8)) ||
desc_limit < 0x2b)) {
- emulate_ts(ctxt, tss_selector & 0xfffc);
- return X86EMUL_PROPAGATE_FAULT;
+ return emulate_ts(ctxt, tss_selector & 0xfffc);
}

if (reason == TASK_SWITCH_IRET || reason == TASK_SWITCH_JMP) {
@@ -3016,7 +3014,7 @@ static int em_movbe(struct x86_emulate_ctxt *ctxt)
ctxt->dst.val = swab64(ctxt->src.val);
break;
default:
- return X86EMUL_PROPAGATE_FAULT;
+ BUG();
}
return X86EMUL_CONTINUE;
}
--
1.8.3.1

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