Re: [Qemu-devel] Regression: block: Add .bdrv_co_pwrite_zeroes()

[Paolo Bonzini]

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