On 03/07/2015 14:01, Denis V. Lunev wrote: > Windows 2012 guests can notify hypervisor about occurred guest crash > (Windows bugcheck(BSOD)) by writing specific Hyper-V msrs. This patch does > handling of this MSR's by KVM and sending notification to user space that > allows to gather Windows guest crash dump by QEMU/LIBVIRT. > > The idea is to provide functionality equal to pvpanic device without > QEMU guest agent for Windows. > > The idea is borrowed from Linux HyperV bus driver and validated against > Windows 2k12. > > Changes from v5: > * added hyperv crash msrs into supported/emulated list > * qemu: reset CPUState::crash_occurred at cpu reset > * qemu: userspace checks kernel support of hyperv crash msrs > by kvm_get_supported_msrs > > Changes from v4: > * fixed typo in email of Andreas Färber <afaerber@xxxxxxx> > my vim strangely behaves on lines with extended Deutch chars > > Changes from v3: > * remove unused HV_X64_MSR_CRASH_CTL_NOTIFY > * added documentation section about KVM_SYSTEM_EVENT_CRASH > * allow only supported values inside crash ctl msr > * qemu: split patch into generic crash handling patches and hyperv specific > * qemu: skip migration of crash ctl msr value > > Changes from v2: > * forbid modification crash ctl msr by guest > * qemu_system_guest_panicked usage in pvpanic and s390x > * hyper-v crash handler move from generic kvm to i386 > * hyper-v crash handler: skip fetching crash msrs just mark crash occurred > * sync with linux-next 20150629 > * patch 11 squashed to patch 10 > * patch 9 squashed to patch 7 > > Changes from v1: > * hyperv code move to hyperv.c > * added read handlers of crash data msrs > * added per vm and per cpu hyperv context structures > * added saving crash msrs inside qemu cpu state > * added qemu fetch and update of crash msrs > * added qemu crash msrs store in cpu state and it's migration > > Signed-off-by: Andrey Smetanin <asmetanin@xxxxxxxxxxxxx> > Signed-off-by: Denis V. Lunev <den@xxxxxxxxxx> > CC: Gleb Natapov <gleb@xxxxxxxxxx> > CC: Paolo Bonzini <pbonzini@xxxxxxxxxx> > I'm queuing patches 1-8 to the KVM tree. For patch 9-12, I've applied them locally but would like Eduardo or Andreas to ack 11 and 12. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
