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Enable KVM guest single-stepping

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Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Pekka Enberg
2010-03-24 22:16:07 +02:00
committed by Will Deacon
parent e3a07fc182
commit aee6632eee
1 changed files with 12 additions and 0 deletions
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kvm.c
+12
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@@ -140,6 +140,16 @@ static void kvm__run(struct kvm *self)
die_perror("KVM_RUN failed");
}
static void kvm__enable_singlestep(struct kvm *self)
{
struct kvm_guest_debug debug = {
.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP,
};
if (ioctl(self->vcpu_fd, KVM_SET_GUEST_DEBUG, &debug) < 0)
die("KVM_SET_GUEST_DEBUG failed");
}
static void kvm__show_registers(struct kvm *self)
{
unsigned long rax, rbx, rcx;
@@ -318,6 +328,8 @@ int main(int argc, char *argv[])
kvm__reset_vcpu(kvm, kernel_start);
kvm__enable_singlestep(kvm);
for (;;) {
kvm__run(kvm);