From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH v6 0/12] HyperV equivalent of pvpanic driver Date: Tue, 7 Jul 2015 12:20:55 +0200 Message-ID: <559BA807.5080201@redhat.com> References: <1435924905-8926-1-git-send-email-den@openvz.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Andrey Smetanin , Gleb Natapov , Eduardo Habkost , =?UTF-8?Q?Andreas_F=c3=a4rber?= To: "Denis V. Lunev" Return-path: Received: from mx1.redhat.com ([209.132.183.28]:58699 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756666AbbGGKVA (ORCPT ); Tue, 7 Jul 2015 06:21:00 -0400 In-Reply-To: <1435924905-8926-1-git-send-email-den@openvz.org> Sender: kvm-owner@vger.kernel.org List-ID: 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. >=20 > The idea is to provide functionality equal to pvpanic device without > QEMU guest agent for Windows. >=20 > The idea is borrowed from Linux HyperV bus driver and validated again= st > Windows 2k12. >=20 > 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 >=20 > Changes from v4: > * fixed typo in email of Andreas F=C3=A4rber > my vim strangely behaves on lines with extended Deutch chars >=20 > 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 sp= ecific > * qemu: skip migration of crash ctl msr value >=20 > 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 occ= urred > * sync with linux-next 20150629 > * patch 11 squashed to patch 10 > * patch 9 squashed to patch 7 >=20 > 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 >=20 > Signed-off-by: Andrey Smetanin > Signed-off-by: Denis V. Lunev > CC: Gleb Natapov > CC: Paolo Bonzini >=20 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