Re: [Qemu-devel] [PATCH 0/3] block: Avoid direct AIO callback

[Luiz Capitulino <lcapitulino@redhat.com>]

On Tue,  7 Jun 2011 16:18:30 +0200
Kevin Wolf <kwolf@redhat.com> wrote:

> This series fixes some cases of block drivers calling AIO callbacks too early.
> It fixes the IDE assertion failure reported by Luiz (in error cases, the DMA
> status, including acb, could first be reset in the callback and only then be
> set by the caller, resulting in a dangling acb and wrong status register value).

This fixes the reported bug, thanks.

I know this is a different subject, but I'm still unable to use the host cdrom
if the -snapshot flag is passed, I think the idea of ignoring the flag for a
read-only device would fix this, no?

> 
> Kevin Wolf (3):
>   qcow2: Avoid direct AIO callback
>   qcow: Avoid direct AIO callback
>   vdi: Avoid direct AIO callback
> 
>  block/qcow.c  |   58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
>  block/qcow2.c |   39 +++++++++++++++++++++++++++++--------
>  block/vdi.c   |   40 +++++++++++++++++++++++++++++++++++---
>  3 files changed, 122 insertions(+), 15 deletions(-)
>