From: Kevin Wolf <kwolf@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH v2] qcow2: Unlock during COW
Date: Wed, 23 Nov 2011 18:01:09 +0100 [thread overview]
Message-ID: <4ECD26D5.4040501@redhat.com> (raw)
In-Reply-To: <1321293318-19177-1-git-send-email-kwolf@redhat.com>
Am 14.11.2011 18:55, schrieb Kevin Wolf:
> Unlocking during COW allows for more parallelism. One change it requires is
> that buffers are dynamically allocated instead of just using a per-image
> buffer.
>
> While touching the code, drop the synchronous qcow2_read() function and replace
> it by a bdrv_read() call.
>
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This seems to break an IDE guest for me. I don't quite understand why
yet, but maybe someone has an idea.
hw/ide/pci.c:313: bmdma_cmd_writeb: Assertion `bm->bus->dma->aiocb ==
((void *)0)' failed.
Kevin
next prev parent reply other threads:[~2011-11-23 16:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-14 17:55 [Qemu-devel] [PATCH v2] qcow2: Unlock during COW Kevin Wolf
2011-11-15 12:07 ` Stefan Hajnoczi
2011-11-23 17:01 ` Kevin Wolf [this message]
2012-05-05 0:21 ` Marc-André Lureau
2012-05-05 3:17 ` Zhi Yong Wu
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