Re: [Qemu-devel] [PATCH] honor IDE_DMA_BUF_SECTORS

[Avi Kivity]

Samuel Thibault wrote:
> Avi Kivity, le Fri 27 Mar 2009 12:52:15 +0300, a écrit :
>   
> > However implementing DMA limits like you propose 
> > (IDE_DMA_BUF_SECTORS) will not fix the bug, only reduce performance.
> >     
>
> Have you read what I wrote? v
>   

You can't have a good flamewar if you read what people actually write.  
Maybe I'm confused by $subject.

> > block-raw-posix need not do that, just a while loop.
> >     
>
> For the synchronous interface, yes. For the asynchronous interface,
> short reads could happen too... (unfortunately we are aware of that too
> late for queuing other requests and getting efficiency).
>   

Currently block-raw-posix uses synchronous I/O even for asynchronous 
requests (using threads) so the fix is the same in both cases.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.