diff options
| author | Gleb Natapov <gleb@redhat.com> | 2010-02-10 13:21:31 +0100 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 16:36:11 +0100 |
| commit | a0044755679f3e761b8b95995e5f2db2b7efd0f6 (patch) | |
| tree | 3a4db9d3e0512109130c2f4f1f425305378c0a27 /arch/x86/kvm/x86.c | |
| parent | KVM: x86 emulator: Add group9 instruction decoding (diff) | |
| download | linux-a0044755679f3e761b8b95995e5f2db2b7efd0f6.tar.xz linux-a0044755679f3e761b8b95995e5f2db2b7efd0f6.zip | |
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/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index b2f91b9af00d..a28379507d30 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3348,8 +3348,9 @@ int emulate_instruction(struct kvm_vcpu *vcpu, vcpu->arch.emulate_ctxt.vcpu = vcpu; vcpu->arch.emulate_ctxt.eflags = kvm_get_rflags(vcpu); vcpu->arch.emulate_ctxt.mode = + (!is_protmode(vcpu)) ? X86EMUL_MODE_REAL : (vcpu->arch.emulate_ctxt.eflags & X86_EFLAGS_VM) - ? X86EMUL_MODE_REAL : cs_l + ? X86EMUL_MODE_VM86 : cs_l ? X86EMUL_MODE_PROT64 : cs_db ? X86EMUL_MODE_PROT32 : X86EMUL_MODE_PROT16; |