This adds a wrapper function kvm_inject_realmode_interrupt() around the emulator function emulate_int_real() to allow real mode interrupt injection.
Signed-off-by: Mohammed Gamal <[email protected]> --- arch/x86/kvm/x86.c | 21 +++++++++++++++++++++ arch/x86/kvm/x86.h | 1 + 2 files changed, 22 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f24e594..59b708c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3958,6 +3958,27 @@ static void init_emulate_ctxt(struct kvm_vcpu *vcpu) memcpy(c->regs, vcpu->arch.regs, sizeof c->regs); } +int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq) +{ + struct decode_cache *c = &vcpu->arch.emulate_ctxt.decode; + int ret; + + init_emulate_ctxt(vcpu); + + ret = emulate_int_real(&vcpu->arch.emulate_ctxt, &emulate_ops, irq); + + if (ret != X86EMUL_CONTINUE) + return EMULATE_FAIL; + + vcpu->arch.emulate_ctxt.eip = c->eip; + memcpy(vcpu->arch.regs, c->regs, sizeof c->regs); + kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip); + kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags); + + return EMULATE_DONE; +} +EXPORT_SYMBOL_GPL(kvm_inject_realmode_interrupt); + static int handle_emulation_failure(struct kvm_vcpu *vcpu) { ++vcpu->stat.insn_emulation_fail; diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index b7a4047..8b83da5 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -67,5 +67,6 @@ static inline int is_paging(struct kvm_vcpu *vcpu) void kvm_before_handle_nmi(struct kvm_vcpu *vcpu); void kvm_after_handle_nmi(struct kvm_vcpu *vcpu); +int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq); #endif -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
