linux-kernel - Re: [PATCH 2/2] virtio: fix vq # when vq skipped

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CACGkMEsg0+vpav1Fo8JF1isq4Ef8t4_CFN1scyztDO8bXzRLBQ@mail.gmail.com>
Date: Wed, 10 Jul 2024 11:25:10 +0800
From: Jason Wang <jasowang@...hat.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: linux-kernel@...r.kernel.org, 
	Alexander Duyck <alexander.h.duyck@...ux.intel.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, David Hildenbrand <david@...hat.com>, 
	Richard Weinberger <richard@....at>, Anton Ivanov <anton.ivanov@...bridgegreys.com>, 
	Johannes Berg <johannes@...solutions.net>, Bjorn Andersson <andersson@...nel.org>, 
	Mathieu Poirier <mathieu.poirier@...aro.org>, Cornelia Huck <cohuck@...hat.com>, 
	Halil Pasic <pasic@...ux.ibm.com>, Eric Farman <farman@...ux.ibm.com>, 
	Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, 
	Alexander Gordeev <agordeev@...ux.ibm.com>, Christian Borntraeger <borntraeger@...ux.ibm.com>, 
	Sven Schnelle <svens@...ux.ibm.com>, Eugenio Pérez <eperezma@...hat.com>, 
	linux-um@...ts.infradead.org, linux-remoteproc@...r.kernel.org, 
	linux-s390@...r.kernel.org, virtualization@...ts.linux.dev, 
	kvm@...r.kernel.org
Subject: Re: [PATCH 2/2] virtio: fix vq # when vq skipped

On Fri, Jul 5, 2024 at 6:09 PM Michael S. Tsirkin <mst@...hat.com> wrote:
>
> virtio balloon communicates to the core that in some
> configurations vq #s are non-contiguous by setting name
> pointer to NULL.
>
> Unfortunately, core then turned around and just made them
> contiguous again. Result is that driver is out of spec.
>
> Implement what the API was supposed to do
> in the 1st place. Compatibility with buggy hypervisors
> is handled inside virtio-balloon, which is the only driver
> making use of this facility, so far.
>
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>

Acked-by: Jason Wang <jasowang@...hat.com>

Thanks