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KVM: x86 emulator: fix X86EMUL_RETRY_INSTR and X86EMUL_CMPXCHG_FAILED values

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Currently X86EMUL_PROPAGATE_FAULT, X86EMUL_RETRY_INSTR and
X86EMUL_CMPXCHG_FAILED have the same value so caller cannot
distinguish why function such as emulator_cmpxchg_emulated()
(which can return both X86EMUL_PROPAGATE_FAULT and
X86EMUL_CMPXCHG_FAILED) failed.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov 2010-04-28 19:15:33 +03:00 committed by Avi Kivity
parent 338dbc9781
commit e680080e65
1 changed files with 3 additions and 2 deletions
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5
arch/x86/include/asm/kvm_emulate.h
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@ -51,8 +51,9 @@ struct x86_emulate_ctxt;
#define X86EMUL_UNHANDLEABLE 1
/* Terminate emulation but return success to the caller. */
#define X86EMUL_PROPAGATE_FAULT 2 /* propagate a generated fault to guest */
#define X86EMUL_RETRY_INSTR 2 /* retry the instruction for some reason */
#define X86EMUL_CMPXCHG_FAILED 2 /* cmpxchg did not see expected value */
#define X86EMUL_RETRY_INSTR 3 /* retry the instruction for some reason */
#define X86EMUL_CMPXCHG_FAILED 4 /* cmpxchg did not see expected value */
struct x86_emulate_ops {
/*
* read_std: Read bytes of standard (non-emulated/special) memory.