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From: Jason Wang <jasowang@redhat.com>
To: "Eugenio Pérez" <eperezma@redhat.com>
Cc: qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>,
	Lei Yang <leiyang@redhat.com>,
	Stefano Garzarella <sgarzare@redhat.com>
Subject: Re: [PATCH] vhost: accept indirect descriptors in shadow virtqueue
Date: Thu, 4 Dec 2025 10:16:39 +0800	[thread overview]
Message-ID: <CACGkMEvvr4jVqtj93ktOXB5xLDzaoCYvgChcxTwLfdArFFadBQ@mail.gmail.com> (raw)
In-Reply-To: <20251201125149.2151026-1-eperezma@redhat.com>

On Mon, Dec 1, 2025 at 8:51 PM Eugenio Pérez <eperezma@redhat.com> wrote:
>
> The device is not able to generate indirect descriptors by itself, only
> the driver can do it.  And SVQ is already able to handle them by reusing
> VirtQueue struct.
>
> Shadow VirtQueue just transform the indirect descriptors to chained
> buffers.  This way we don't need to map a new buffer for the indirect
> table and handle its exhaustion etc.  As they are only used in control
> plane and HW devices don't like indirect, we should not see significant
> downsides with these.
>
> Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
> --
>

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

Thanks



      reply	other threads:[~2025-12-04  2:18 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-01 12:51 [PATCH] vhost: accept indirect descriptors in shadow virtqueue Eugenio Pérez
2025-12-04  2:16 ` Jason Wang [this message]

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