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Re: [Qemu-devel] buffer alignment for block backends
From: |
Stefano Stabellini |
Subject: |
Re: [Qemu-devel] buffer alignment for block backends |
Date: |
Thu, 09 Apr 2009 14:30:37 +0100 |
User-agent: |
Thunderbird 2.0.0.14 (X11/20080505) |
Anthony Liguori wrote:
> Stefano Stabellini wrote:
>> Anthony Liguori wrote:
>>
>>
>>>> If you do not want to do that, another possible solution is to create a
>>>> new function called "qemu_blockalign" that would be implemented as
>>>> qemu_memalign(512, size);
>>>>
>>> This is fine, but this is purely an optimization, it cannot be relied
>>> upon in the general case.
>>>
>>>
>>
>>
>> If you are OK with this, a simple patch like the following is
>> acceptable, or do you prefer a more formal approach involving a new
>> function in the BlockDriver interface?
>>
>
> Yes, but that's not covering very many of the cases. There are still
> places where we allocate bounce buffers that aren't with memalign (like
> in block-qcow2.c). Also, please document what the new function does and
> when it should be used.
>
Ok, I'll try to find all those places.
- Re: [Qemu-devel] buffer alignment for block backends, (continued)
- Re: [Qemu-devel] buffer alignment for block backends, Samuel Thibault, 2009/04/09
- Re: [Qemu-devel] buffer alignment for block backends, Lennart Sorensen, 2009/04/09
- Re: [Qemu-devel] buffer alignment for block backends, Stefano Stabellini, 2009/04/09
- Re: [Qemu-devel] buffer alignment for block backends, Samuel Thibault, 2009/04/09
- Re: [Qemu-devel] buffer alignment for block backends, Paul Brook, 2009/04/09
- Re: [Qemu-devel] buffer alignment for block backends, Samuel Thibault, 2009/04/09
- Re: [Qemu-devel] buffer alignment for block backends, Anthony Liguori, 2009/04/09
- Re: [Qemu-devel] buffer alignment for block backends, Samuel Thibault, 2009/04/09
Re: [Qemu-devel] buffer alignment for block backends, Stefano Stabellini, 2009/04/09
Re: [Qemu-devel] buffer alignment for block backends, Christoph Hellwig, 2009/04/09
Re: [Qemu-devel] buffer alignment for block backends, Stefano Stabellini, 2009/04/09
Re: [Qemu-devel] buffer alignment for block backends, Christoph Hellwig, 2009/04/09