Call KVM hypercall KVM_HC_PANIC if guest kernel calls panic() to signal the host that the guest paniced.
Depends on CONFIG_KVM_GUEST set. Signed-off-by: Daniel Gollub <[email protected]> --- arch/x86/kernel/kvm.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 33c07b0..f3c7d34 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -534,6 +534,20 @@ static void __init kvm_apf_trap_init(void) set_intr_gate(14, &async_page_fault); } +static int kvm_guest_panic(struct notifier_block *nb, unsigned long l, void *p) +{ + kvm_hypercall0(KVM_HC_PANIC); + return NOTIFY_DONE; +} + +static struct notifier_block kvm_guest_paniced = { + .notifier_call = kvm_guest_panic +}; + +static void kvm_guest_panic_handler_init(void) { + atomic_notifier_chain_register(&panic_notifier_list, &kvm_guest_paniced); +} + void __init kvm_guest_init(void) { int i; @@ -541,6 +555,8 @@ void __init kvm_guest_init(void) if (!kvm_para_available()) return; + kvm_guest_panic_handler_init(); + paravirt_ops_setup(); register_reboot_notifier(&kvm_pv_reboot_nb); for (i = 0; i < KVM_TASK_SLEEP_HASHSIZE; i++) -- 1.7.1 -- 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
