diff options
| author | Gleb Natapov <gleb@redhat.com> | 2010-02-10 07:21:31 -0500 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 10:36:11 -0500 |
| commit | a0044755679f3e761b8b95995e5f2db2b7efd0f6 (patch) | |
| tree | 3a4db9d3e0512109130c2f4f1f425305378c0a27 /arch/x86/include | |
| parent | 60a29d4ea4e7b6b95d9391ebc8625b0426f3a363 (diff) | |
KVM: x86 emulator: Add Virtual-8086 mode of emulation
For some instructions CPU behaves differently for real-mode and
virtual 8086. Let emulator know which mode cpu is in, so it will
not poke into vcpu state directly.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_emulate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 9b697c2735d9..784d7c586d8e 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h | |||
| @@ -168,6 +168,7 @@ struct x86_emulate_ctxt { | |||
| 168 | 168 | ||
| 169 | /* Execution mode, passed to the emulator. */ | 169 | /* Execution mode, passed to the emulator. */ |
| 170 | #define X86EMUL_MODE_REAL 0 /* Real mode. */ | 170 | #define X86EMUL_MODE_REAL 0 /* Real mode. */ |
| 171 | #define X86EMUL_MODE_VM86 1 /* Virtual 8086 mode. */ | ||
| 171 | #define X86EMUL_MODE_PROT16 2 /* 16-bit protected mode. */ | 172 | #define X86EMUL_MODE_PROT16 2 /* 16-bit protected mode. */ |
| 172 | #define X86EMUL_MODE_PROT32 4 /* 32-bit protected mode. */ | 173 | #define X86EMUL_MODE_PROT32 4 /* 32-bit protected mode. */ |
| 173 | #define X86EMUL_MODE_PROT64 8 /* 64-bit (long) mode. */ | 174 | #define X86EMUL_MODE_PROT64 8 /* 64-bit (long) mode. */ |