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Re: [Qemu-devel] [PATCH v2] qcow2: Unlock during COW
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From: |
Kevin Wolf |
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Subject: |
Re: [Qemu-devel] [PATCH v2] qcow2: Unlock during COW |
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Date: |
Wed, 23 Nov 2011 18:01:09 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20111115 Thunderbird/8.0 |
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 <address@hidden>
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