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Re: [Qemu-devel] [PATCH for-2.1] dma-helpers: Fix too long qiov
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From: |
Eric Blake |
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Subject: |
Re: [Qemu-devel] [PATCH for-2.1] dma-helpers: Fix too long qiov |
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Date: |
Wed, 09 Jul 2014 14:55:20 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
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 <address@hidden>
> ---
> dma-helpers.c | 4 ++++
> include/qemu-common.h | 1 +
> util/iov.c | 13 +++++++++++++
> 3 files changed, 18 insertions(+)
>
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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