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From: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
To: Andrey Zhadchenko <andrey.zhadchenko@virtuozzo.com>, den@openvz.org
Cc: svt-core@virtuozzo.com
Subject: Re: [QEMU HCI-8.0 PATCH v3 0/4] vhost-blk: improve feature negotiation
Date: Thu, 27 Aug 2026 16:00:38 +0300	[thread overview]
Message-ID: <c4b1e607-1bb8-474d-886b-4a9056db031a@virtuozzo.com> (raw)
In-Reply-To: <20260825172736.269590-1-andrey.zhadchenko@virtuozzo.com>

On 8/25/26 8:27 PM, Andrey Zhadchenko wrote:
> Feature negotiation in vhost-blk is a bit of a mess:
>  - offering VIRTIO_BLK_F_SIZE_MAX along with size_max == 0 is a
> bug which causes win2012 crashes
>  - kernel not allowed to reject some actually unimplmented
> feature bits
>  - flush is not offered to the guests despite kernel support
>  - duplicate ioctls
> 
> Fix everything above.
> 
> v3:
>  - separated patches per reviewer requests
>  - add new patch dropping extra VHOST_GET_FEATURES ioctl
> 
> Andrey Zhadchenko (4):
>   vhost-blk: never offer VIRTIO_BLK_F_SIZE_MAX
>   vhost-blk: expand list of the features kernel can refuse
>   vhost-blk: offer VIRTIO_BLK_F_FLUSH
>   vhost-blk: drop vhost_dev.backend_features use
> 
>  hw/block/vhost-blk.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 

Fixed my own comment to patch 3 myself.  With that:
Reviewed-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>

Applied to hci-8.0

           reply	other threads:[~2026-08-27 13:00 UTC|newest]

Thread overview: expand[flat|nested]  mbox.gz  Atom feed
 [parent not found: <20260825172736.269590-1-andrey.zhadchenko@virtuozzo.com>]

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