diff options
| author | Gleb Natapov <gleb@redhat.com> | 2010-04-28 16:15:39 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-01 07:35:35 (GMT) |
| commit | 95c5588652f7742a21c33d9dcce0e043e057d04f (patch) | |
| tree | 6f948ccbb9e8996d2af5890ecee32b31db72877c /arch | |
| parent | 3457e4192e367fd4e0da5e9f46f9df85fa99cd11 (diff) | |
| download | linux-fsl-qoriq-95c5588652f7742a21c33d9dcce0e043e057d04f.tar.xz | |
KVM: x86 emulator: advance RIP outside x86 emulator code
Return new RIP as part of instruction emulation result instead of
updating KVM's RIP from x86 emulator code.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 7 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
2 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index d7a18a0..437f31b 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -2496,8 +2496,9 @@ int emulator_task_switch(struct x86_emulate_ctxt *ctxt, if (rc == X86EMUL_CONTINUE) { memcpy(ctxt->vcpu->arch.regs, c->regs, sizeof c->regs); - kvm_rip_write(ctxt->vcpu, c->eip); rc = writeback(ctxt, ops); + if (rc == X86EMUL_CONTINUE) + ctxt->eip = c->eip; } return (rc == X86EMUL_UNHANDLEABLE) ? -1 : 0; @@ -2554,7 +2555,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) if (address_mask(c, c->regs[VCPU_REGS_RCX]) == 0) { string_done: ctxt->restart = false; - kvm_rip_write(ctxt->vcpu, c->eip); + ctxt->eip = c->eip; goto done; } /* The second termination condition only applies for REPE @@ -3032,7 +3033,7 @@ writeback: ctxt->decode.mem_read.end = 0; /* Commit shadow register state. */ memcpy(ctxt->vcpu->arch.regs, c->regs, sizeof c->regs); - kvm_rip_write(ctxt->vcpu, c->eip); + ctxt->eip = c->eip; ops->set_rflags(ctxt->vcpu, ctxt->eflags); done: diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 9e5a833..8f45cc7 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3941,6 +3941,7 @@ restart: shadow_mask = vcpu->arch.emulate_ctxt.interruptibility; kvm_x86_ops->set_interrupt_shadow(vcpu, shadow_mask); + kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip); if (vcpu->arch.pio.count) { if (!vcpu->arch.pio.in) @@ -4945,6 +4946,7 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason, if (ret) return EMULATE_FAIL; + kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip); kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags); return EMULATE_DONE; } |