From: Eric Blake <eblake@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>, qemu-devel@nongnu.org
Cc: stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCH for-2.1] dma-helpers: Fix too long qiov
Date: Wed, 09 Jul 2014 14:55:20 -0600 [thread overview]
Message-ID: <53BDAC38.6030505@redhat.com> (raw)
In-Reply-To: <1404926602-11494-1-git-send-email-kwolf@redhat.com>
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On 07/09/2014 11:23 AM, Kevin Wolf wrote:
> If the size of the scatter/gather list isn't a multiple of 512, the
> number of sectors for the block layer request is rounded down, resulting
> in a qiov that doesn't match the request length. Truncate the qiov to the
> new length of the request.
>
> This fixes the IDE qtest case /x86_64/ide/bmdma/short_prdt.
>
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
> dma-helpers.c | 4 ++++
> include/qemu-common.h | 1 +
> util/iov.c | 13 +++++++++++++
> 3 files changed, 18 insertions(+)
>
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2014-07-09 20:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-09 17:23 [Qemu-devel] [PATCH for-2.1] dma-helpers: Fix too long qiov Kevin Wolf
2014-07-09 20:55 ` Eric Blake [this message]
2014-09-03 11:51 ` Paolo Bonzini
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