Signed-off-by: Gleb Natapov <[email protected]>
---
arch/x86/include/asm/kvm_emulate.h | 22 ++++++++++------------
arch/x86/kvm/emulate.c | 4 +++-
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/arch/x86/include/asm/kvm_emulate.h
b/arch/x86/include/asm/kvm_emulate.h
index c764f43..8d0fe8f 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -236,6 +236,15 @@ struct read_cache {
unsigned long end;
};
+/* Execution mode, passed to the emulator. */
+enum x86emul_mode {
+ X86EMUL_MODE_REAL, /* Real mode. */
+ X86EMUL_MODE_VM86, /* Virtual 8086 mode. */
+ X86EMUL_MODE_PROT16, /* 16-bit protected mode. */
+ X86EMUL_MODE_PROT32, /* 32-bit protected mode. */
+ X86EMUL_MODE_PROT64, /* 64-bit (long) mode. */
+};
+
struct x86_emulate_ctxt {
struct x86_emulate_ops *ops;
@@ -243,7 +252,7 @@ struct x86_emulate_ctxt {
unsigned long eflags;
unsigned long eip; /* eip before instruction emulation */
/* Emulated execution mode, represented by an X86EMUL_MODE value. */
- int mode;
+ enum x86emul_mode mode;
/* interruptibility state, as a result of execution of STI or MOV SS */
int interruptibility;
@@ -293,17 +302,6 @@ struct x86_emulate_ctxt {
#define REPE_PREFIX 0xf3
#define REPNE_PREFIX 0xf2
-/* Execution mode, passed to the emulator. */
-#define X86EMUL_MODE_REAL 0 /* Real mode. */
-#define X86EMUL_MODE_VM86 1 /* Virtual 8086 mode. */
-#define X86EMUL_MODE_PROT16 2 /* 16-bit protected mode. */
-#define X86EMUL_MODE_PROT32 4 /* 32-bit protected mode. */
-#define X86EMUL_MODE_PROT64 8 /* 64-bit (long) mode. */
-
-/* any protected mode */
-#define X86EMUL_MODE_PROT (X86EMUL_MODE_PROT16|X86EMUL_MODE_PROT32| \
- X86EMUL_MODE_PROT64)
-
/* CPUID vendors */
#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx 0x68747541
#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx 0x444d4163
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 10f0136..4d33423 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2210,6 +2210,8 @@ static int em_sysenter(struct x86_emulate_ctxt *ctxt)
if (msr_data == 0x0)
return emulate_gp(ctxt, 0);
break;
+ default:
+ break;
}
ctxt->eflags &= ~(EFLG_VM | EFLG_IF | EFLG_RF);
@@ -4338,7 +4340,7 @@ int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
}
/* Instruction can only be executed in protected mode */
- if ((ctxt->d & Prot) && !(ctxt->mode & X86EMUL_MODE_PROT)) {
+ if ((ctxt->d & Prot) && ctxt->mode < X86EMUL_MODE_PROT16) {
rc = emulate_ud(ctxt);
goto done;
}
--
1.7.10
--
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