Patchwork [32/37] kvm: x86: Catch and report failing IRQ and NMI injections

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Submitter Marcelo Tosatti
Date Feb. 14, 2011, 3:23 p.m.
Message ID <ce377af399563195d066d5fee0c7b717967932ee.1297696986.git.mtosatti@redhat.com>
Download mbox | patch
Permalink /patch/83099/
State New
Headers show

Comments

Marcelo Tosatti - Feb. 14, 2011, 3:23 p.m.
From: Jan Kiszka <jan.kiszka@siemens.com>

We do not need to abort, but the user should be notified that weird
things go on.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
 target-i386/kvm.c |   16 +++++++++++++---
 1 files changed, 13 insertions(+), 3 deletions(-)

Patch

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 8668cb3..0aa0a41 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -1442,11 +1442,17 @@  int kvm_arch_get_registers(CPUState *env)
 
 void kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
 {
+    int ret;
+
     /* 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);
+        ret = kvm_vcpu_ioctl(env, KVM_NMI);
+        if (ret < 0) {
+            fprintf(stderr, "KVM: injection failed, NMI lost (%s)\n",
+                    strerror(-ret));
+        }
     }
 
     if (!kvm_irqchip_in_kernel()) {
@@ -1467,9 +1473,13 @@  void kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
                 struct kvm_interrupt intr;
 
                 intr.irq = irq;
-                /* FIXME: errors */
                 DPRINTF("injected interrupt %d\n", irq);
-                kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr);
+                ret = kvm_vcpu_ioctl(env, KVM_INTERRUPT, &intr);
+                if (ret < 0) {
+                    fprintf(stderr,
+                            "KVM: injection failed, interrupt lost (%s)\n",
+                            strerror(-ret));
+                }
             }
         }