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authorAndrey Smetanin <asmetanin@virtuozzo.com>2015-07-03 15:01:41 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2015-07-23 08:27:06 +0200
commit2ce7918990641b07e70e1b25752d666369e2016e (patch)
tree03f59dec22c00e8476ab6c65443eaaf9e67d5182 /Documentation/virtual
parente7d9513b60e87f62e41090fa3a26eca796924346 (diff)
downloadlinux-2ce7918990641b07e70e1b25752d666369e2016e.tar.bz2
kvm/x86: add sending hyper-v crash notification to user space
Sending of notification is done by exiting vcpu to user space if KVM_REQ_HV_CRASH is enabled for vcpu. At exit to user space the kvm_run structure contains system_event with type KVM_SYSTEM_EVENT_CRASH to notify about guest crash occurred. Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Peter Hornyack <peterhornyack@google.com> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Gleb Natapov <gleb@kernel.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virtual')
-rw-r--r--Documentation/virtual/kvm/api.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index a7926a90156f..a4ebcb712375 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -3277,6 +3277,7 @@ should put the acknowledged interrupt vector into the 'epr' field.
struct {
#define KVM_SYSTEM_EVENT_SHUTDOWN 1
#define KVM_SYSTEM_EVENT_RESET 2
+#define KVM_SYSTEM_EVENT_CRASH 3
__u32 type;
__u64 flags;
} system_event;
@@ -3296,6 +3297,10 @@ Valid values for 'type' are:
KVM_SYSTEM_EVENT_RESET -- the guest has requested a reset of the VM.
As with SHUTDOWN, userspace can choose to ignore the request, or
to schedule the reset to occur in the future and may call KVM_RUN again.
+ KVM_SYSTEM_EVENT_CRASH -- the guest crash occurred and the guest
+ has requested a crash condition maintenance. Userspace can choose
+ to ignore the request, or to gather VM memory core dump and/or
+ reset/shutdown of the VM.
/* Fix the size of the union. */
char padding[256];