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Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes()
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes() |
Date: |
Tue, 5 Jul 2016 17:09:45 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 |
On 05/07/2016 16:59, Eric Blake wrote:
> And yes, we could probably switch to (potentially slower) / % * instead
> of bit operations in block/io.c to accommodate a non-power-of-2 optimal
> size, but it would require a careful audit to make sure we don't have
> even more bit-wise operations lurking that were assuming a power of 2.
Yes, it would require some auditing but it has always worked. Regarding
speed, I'm sure that / % * are not slower than a system call! :)
Paolo
- [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Peter Lieven, 2016/07/04
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Eric Blake, 2016/07/04
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Paolo Bonzini, 2016/07/05
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Peter Lieven, 2016/07/05
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Eric Blake, 2016/07/05
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(),
Paolo Bonzini <=
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Peter Lieven, 2016/07/15
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Eric Blake, 2016/07/15
- Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Peter Lieven, 2016/07/18
Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes(), Eric Blake, 2016/07/20