From: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Make use of the new KVM_NMI IOCTL to send NMIs into the KVM guest if the
user space raised them. (example: qemu monitor's "nmi" command)
Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Acked-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
---
configure | 3 +++
target-i386/kvm.c | 7 +++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/configure b/configure
index 47e4cf0..ec37a91 100755
--- a/configure
+++ b/configure
@@ -1674,6 +1674,9 @@ if test "$kvm" != "no" ; then
#if !defined(KVM_CAP_DESTROY_MEMORY_REGION_WORKS)
#error Missing KVM capability KVM_CAP_DESTROY_MEMORY_REGION_WORKS
#endif
+#if !defined(KVM_CAP_USER_NMI)
+#error Missing KVM capability KVM_CAP_USER_NMI
+#endif
int main(void) { return 0; }
EOF
if test "$kerneldir" != "" ; then
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 7dfc357..755f8c9 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -1417,6 +1417,13 @@ int kvm_arch_get_registers(CPUState *env)
int kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
{
+ /* Inject NMI */
+ if (env->interrupt_request & CPU_INTERRUPT_NMI) {
+ env->interrupt_request &= ~CPU_INTERRUPT_NMI;
+ DPRINTF("injected NMI\n");
+ kvm_vcpu_ioctl(env, KVM_NMI);
+ }
+
/* Try to inject an interrupt if the guest can accept it */
if (run->ready_for_interrupt_injection &&
(env->interrupt_request & CPU_INTERRUPT_HARD) &&
--
1.7.2.3
--
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