From: Rusty Russell <rusty@rustcorp.com.au>
To: Amit Shah <amit.shah@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Subject: Re: [PATCH 0/6] virtio: console: Fixes
Date: Fri, 12 Feb 2010 19:34:58 +1030 [thread overview]
Message-ID: <201002121934.58477.rusty@rustcorp.com.au> (raw)
In-Reply-To: <1265950939-12359-1-git-send-email-amit.shah@redhat.com>
On Fri, 12 Feb 2010 03:32:13 pm Amit Shah wrote:
> Hey Rusty,
>
> Here are a few fixes for virtio and virtio_console.
>
> The first patch ensures the data elements of vqs are properly
> initialised at allocation-time so that we don't trigger BUG_ONs. I found
> this when hot-unplugging ports and there was just one unused buffer.
> detach_unused_buffers() kept returning pointers that were invalid. I
> didn't catch this earlier as I had the in_vq filled completely.
>
> Patches 2, 4 and 5 can be folded into the series as they are bugfixes
> for the functionality present there.
>
> About patch 5: When running a test that transfers a 260M file from the
> host to the guest, qemu-kvm.git takes 17m with a single outstanding
> buffer in the in_vq vs. 1m when the entire in_vq is filled. This is a
> bug in qemu-kvm.git's scheduling, but since it's a big difference and
> not much change involved, we could merge this now.
>
> Comments?
>
> If these patches are favourable, I could send you a tarball in private
> so that the bugfixes are folded in the series and just patches 1, 3 and
> 6 are added.
I prefer to fold them myself, after they've spent some time in linux-next.
Thanks!
Rusty.
next prev parent reply other threads:[~2010-02-12 9:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-12 5:02 [PATCH 0/6] virtio: console: Fixes Amit Shah
2010-02-12 5:02 ` [PATCH 1/6] virtio: Initialize vq->data entries to NULL Amit Shah
2010-02-12 5:02 ` [PATCH 2/6] virtio: console: Ensure no memleaks in case of unused buffers Amit Shah
2010-02-12 5:02 ` [PATCH 3/6] virtio: console: Add ability to remove module Amit Shah
2010-02-12 5:02 ` [PATCH 4/6] virtio: console: Error out if we can't allocate buffers for control queue Amit Shah
2010-02-12 5:02 ` [PATCH 5/6] virtio: console: Fill ports' entire in_vq with buffers Amit Shah
2010-02-12 5:02 ` [PATCH 6/6] Add MAINTAINERS entry for virtio_console Amit Shah
2010-02-12 9:58 ` [PATCH 1/6] virtio: Initialize vq->data entries to NULL Rusty Russell
2010-02-12 9:04 ` Rusty Russell [this message]
2010-02-12 9:07 ` [PATCH 0/6] virtio: console: Fixes Amit Shah
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