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From: Will Deacon <will.deacon@arm.com>
To: Julien Thierry <julien.thierry@arm.com>
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, kraxel@redhat.com
Subject: Re: [PATCH kvmtool v2 00/13] Implement reset of virtio devices
Date: Tue, 22 Jan 2019 07:07:30 +0000	[thread overview]
Message-ID: <20190122070729.GA10214@brain-police> (raw)
In-Reply-To: <1547129570-14351-1-git-send-email-julien.thierry@arm.com>

On Thu, Jan 10, 2019 at 02:12:37PM +0000, Julien Thierry wrote:
> This series was developped by Jean-Philippe and is needed for a series
> I'll be posting shortly after to load firmwares on arm kvmtool.
> 
> Currently, when a guest tries to reset a device, a lot of ressources
> aren't reset (threads keep running, virtio queue keep their state, etc).
> 
> When the guest only does the reset to initialize the device and there
> were no previous users, there is no noticeable issue. But when a guest
> has a firmare + Linux, if the firmware uses a virtio device, Linux will
> fail to probe that device.
> 
> This series aim to properly reset the virtio resources when the guests
> requests it.
> 
> Reset of net vhost is unsupported for now.
> 
> Patch 1 is a bug fix on ioeventfd
> Patch 2-6 provide the core support so devices can implement their reset
> Patch 7-13 implements the reset for the various virtio devices

Cheers, I'll pick this up. There's a vague comment in patch 10 about aio
being busted. If that's the case then we should either fix it or remove
it...

Will

  parent reply	other threads:[~2019-01-22  7:07 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-10 14:12 [PATCH kvmtool v2 00/13] Implement reset of virtio devices Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 01/13] ioeventfd: Fix removal of ioeventfd Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 02/13] virtio: Implement notify_status Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 03/13] virtio: Add get_vq_count() callback Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 04/13] virtio: Add get_vq() callback Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 05/13] virtio: Add exit_vq() callback Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 06/13] virtio: Add reset() callback Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 07/13] net/uip: Add exit function Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 08/13] virtio/net: Clean virtqueue state Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 09/13] virtio/net: Implement device and virtqueue reset Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 10/13] virtio/blk: Reset virtqueue Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 11/13] threadpool: Add cancel() function Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 12/13] virtio/p9: Implement reset Julien Thierry
2019-01-10 14:12 ` [PATCH kvmtool v2 13/13] virtio/console: " Julien Thierry
2019-01-22  7:07 ` Will Deacon [this message]
2019-01-22 11:51   ` [PATCH kvmtool v2 00/13] Implement reset of virtio devices Jean-Philippe Brucker

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