linux-kernel - Re: [PATCH v2 0/2] virtio/vhost: fix alignment requirements

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Date:	Thu, 25 Dec 2014 17:05:48 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH v2 0/2] virtio/vhost: fix alignment requirements

On Thu, Dec 25, 2014 at 05:05:01PM +0200, Michael S. Tsirkin wrote:
> vhost incorrectly asked for 8 byte alignment for
> used ring pointer, it should be 4 byte.
> 
> Let's add explicit macros for ring element alignment,
> this makes it easier to make sure our requirements
> match the spec.
> 
> Rusty, OK to merge this through my vhost tree, or do you
> prefer merging this through yours?

Just to clarify, this is needed in 3.19.

> Michael S. Tsirkin (2):
>   virtio_ring: document alignment requirements
>   vhost: relax used address alignment
> 
>  include/uapi/linux/virtio_ring.h |  7 +++++++
>  drivers/vhost/vhost.c            | 10 +++++++---
>  2 files changed, 14 insertions(+), 3 deletions(-)
> 
> -- 
> MST
> 
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