From: Amit Shah <amit.shah@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [RFC PATCH] virtio_console: link vq to port with a private pointer in struct virtqueue
Date: Thu, 19 Apr 2012 11:51:16 +0530 [thread overview]
Message-ID: <20120419061958.GA9980@amit.redhat.com> (raw)
In-Reply-To: <1334756013-11752-1-git-send-email-pbonzini@redhat.com>
On (Wed) 18 Apr 2012 [15:33:33], Paolo Bonzini wrote:
> For virtio-scsi multiqueue support I would like to have an easy and
> fast way to go from a virtqueue to the internal struct for that
> queue.
>
> It turns out that virtio-serial has the same need, but it gets
> by with a simple list walk.
>
> This patch adds a pointer to struct virtqueue that is reserved for
> the virtio device, and uses it in virtio-serial.
>
> Cc: Amit Shah <amit.shah@redhat.com>
> Cc: Rusty Russell <rusty@rustcorp.com.au>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> Untested; what do you think? Would this patch be acceptable
> as is, or only with a more pressing need in virtio-scsi, or never?
Yes, this is useful. Saves taking a spin lock and walking the list
each time any data is received from the host.
Acked-by: Amit Shah <amit.shah@redhat.com>
Thanks,
Amit
WARNING: multiple messages have this Message-ID (diff)
From: Amit Shah <amit.shah@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org,
"Michael S. Tsirkin" <mst@redhat.com>,
virtualization@lists.linux-foundation.org
Subject: Re: [RFC PATCH] virtio_console: link vq to port with a private pointer in struct virtqueue
Date: Thu, 19 Apr 2012 11:51:16 +0530 [thread overview]
Message-ID: <20120419061958.GA9980@amit.redhat.com> (raw)
In-Reply-To: <1334756013-11752-1-git-send-email-pbonzini@redhat.com>
On (Wed) 18 Apr 2012 [15:33:33], Paolo Bonzini wrote:
> For virtio-scsi multiqueue support I would like to have an easy and
> fast way to go from a virtqueue to the internal struct for that
> queue.
>
> It turns out that virtio-serial has the same need, but it gets
> by with a simple list walk.
>
> This patch adds a pointer to struct virtqueue that is reserved for
> the virtio device, and uses it in virtio-serial.
>
> Cc: Amit Shah <amit.shah@redhat.com>
> Cc: Rusty Russell <rusty@rustcorp.com.au>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> Untested; what do you think? Would this patch be acceptable
> as is, or only with a more pressing need in virtio-scsi, or never?
Yes, this is useful. Saves taking a spin lock and walking the list
each time any data is received from the host.
Acked-by: Amit Shah <amit.shah@redhat.com>
Thanks,
Amit
next prev parent reply other threads:[~2012-04-19 6:21 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-18 13:33 [RFC PATCH] virtio_console: link vq to port with a private pointer in struct virtqueue Paolo Bonzini
2012-04-18 13:33 ` Paolo Bonzini
2012-04-18 14:21 ` Michael S. Tsirkin
2012-04-18 14:21 ` Michael S. Tsirkin
2012-04-18 14:34 ` Paolo Bonzini
2012-04-18 14:34 ` Paolo Bonzini
2012-04-18 16:10 ` Michael S. Tsirkin
2012-04-18 16:10 ` Michael S. Tsirkin
2012-04-18 18:38 ` Paolo Bonzini
2012-04-18 18:38 ` Paolo Bonzini
2012-04-18 18:48 ` Michael S. Tsirkin
2012-04-18 18:48 ` Michael S. Tsirkin
2012-04-19 6:21 ` Amit Shah [this message]
2012-04-19 6:21 ` Amit Shah
2012-05-08 2:11 ` Rusty Russell
2012-05-08 2:11 ` Rusty Russell
2012-05-08 6:43 ` Paolo Bonzini
2012-05-08 6:43 ` Paolo Bonzini
2012-05-08 9:45 ` Paolo Bonzini
2012-05-08 9:45 ` Paolo Bonzini
2012-05-08 10:18 ` Michael S. Tsirkin
2012-05-08 10:18 ` Michael S. Tsirkin
2012-05-10 1:26 ` Rusty Russell
2012-05-10 1:26 ` Rusty Russell
2012-05-10 6:02 ` Michael S. Tsirkin
2012-05-10 6:02 ` Michael S. Tsirkin
2012-05-08 10:56 ` [PATCH untested] virtio: allocate extra memory before the ring ( was Re: [RFC PATCH] virtio_console: link vq to port with a private) " Michael S. Tsirkin
2012-05-08 10:56 ` Michael S. Tsirkin
2012-05-08 11:06 ` Paolo Bonzini
2012-05-08 11:06 ` Paolo Bonzini
2012-05-08 11:53 ` Michael S. Tsirkin
2012-05-08 11:53 ` Michael S. Tsirkin
2012-05-08 11:34 ` Michael S. Tsirkin
2012-05-08 11:34 ` Michael S. Tsirkin
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