From: Paolo Bonzini <pbonzini@redhat.com>
To: "Denis V. Lunev" <den@openvz.org>
Cc: Andrey Smetanin <asmetanin@virtuozzo.com>,
Gleb Natapov <gleb@kernel.org>,
qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [PATCH v3 0/9] HyperV equivalent of pvpanic driver
Date: Wed, 1 Jul 2015 16:09:13 +0200 [thread overview]
Message-ID: <5593F489.3040208@redhat.com> (raw)
In-Reply-To: <1435664007-4965-1-git-send-email-den@openvz.org>
On 30/06/2015 13:33, 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 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 occured
> * 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@virtuozzo.com>
> Signed-off-by: Denis V. Lunev <den@openvz.org>
> CC: Gleb Natapov <gleb@kernel.org>
> CC: Paolo Bonzini <pbonzini@redhat.com>
The patches look good, thanks. I'll queue them as soon as I start
merging 4.3 features.
Paolo
next prev parent reply other threads:[~2015-07-01 14:09 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-30 11:33 [Qemu-devel] [PATCH v3 0/9] HyperV equivalent of pvpanic driver Denis V. Lunev
2015-06-30 11:33 ` [Qemu-devel] [PATCH 1/9] kvm/x86: move Hyper-V MSR's/hypercall code into hyperv.c file Denis V. Lunev
2015-07-01 0:11 ` Peter Hornyack
2015-06-30 11:33 ` [Qemu-devel] [PATCH 2/9] kvm: introduce vcpu_debug = kvm_debug + vcpu context Denis V. Lunev
2015-07-01 0:12 ` Peter Hornyack
2015-06-30 11:33 ` [Qemu-devel] [PATCH 3/9] kvm: add hyper-v crash msrs values Denis V. Lunev
2015-07-01 0:14 ` Peter Hornyack
2015-07-01 15:00 ` Paolo Bonzini
2015-07-01 15:53 ` Denis V. Lunev
2015-07-01 16:06 ` Peter Hornyack
2015-07-01 16:48 ` Paolo Bonzini
2015-06-30 11:33 ` [Qemu-devel] [PATCH 4/9] kvm/x86: added hyper-v crash msrs into kvm hyperv context Denis V. Lunev
2015-07-01 0:14 ` Peter Hornyack
2015-06-30 11:33 ` [Qemu-devel] [PATCH 5/9] kvm: added KVM_REQ_HV_CRASH value to notify qemu about hyper-v crash Denis V. Lunev
2015-07-01 0:14 ` Peter Hornyack
2015-06-30 11:33 ` [Qemu-devel] [PATCH 6/9] kvm/x86: mark hyper-v crash msrs as partition wide Denis V. Lunev
2015-07-01 0:15 ` Peter Hornyack
2015-06-30 11:33 ` [Qemu-devel] [PATCH 7/9] kvm/x86: added hyper-v crash data and ctl msr's get/set'ers Denis V. Lunev
2015-07-01 0:15 ` Peter Hornyack
2015-07-01 16:47 ` Paolo Bonzini
2015-06-30 11:33 ` [Qemu-devel] [PATCH 8/9] kvm/x86: add sending hyper-v crash notification to user space Denis V. Lunev
2015-07-01 0:16 ` Peter Hornyack
2015-07-01 15:12 ` Paolo Bonzini
2015-06-30 11:33 ` [Qemu-devel] [PATCH 9/9] qemu/kvm: kvm hyper-v based guest crash event handling Denis V. Lunev
2015-07-01 15:07 ` Paolo Bonzini
2015-07-02 13:19 ` Andrey Smetanin
2015-07-02 13:30 ` Paolo Bonzini
2015-06-30 12:26 ` [Qemu-devel] [PATCH v3 0/9] HyperV equivalent of pvpanic driver Daniel P. Berrange
2015-06-30 12:38 ` Denis V. Lunev
2015-07-01 14:09 ` Paolo Bonzini [this message]
2015-07-01 15:55 ` Denis V. Lunev
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