Re: [Qemu-devel] [PATCH 2/2] Revert "memory: Return -1 again on reads from unsigned regions"

["Andreas Färber" <afaerber@suse.de>]

Am 08.08.2013 17:23, schrieb Peter Maydell:
> On 3 August 2013 09:31, Jan Kiszka <jan.kiszka@web.de> wrote:
>> From: Jan Kiszka <jan.kiszka@siemens.com>
>>
>> This reverts commit 9b8c69243585a32d14b9bb9fcd52c37b0b5a1b71.
>>
>> The commit was wrong: We only return -1 on invalid accesses, not on
>> valid but unbacked ones. This broke various corner cases.
>>
>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> 
> This revert fixes the regression in the 'musicpal' board.
> 
> Presumably these two patches should go into 1.6 since it is
> a regression fix... cc'ing Anthony.

Since no one has spoken up with a concrete use case that breaks when
having the PIO region opaque, I agree this seems the best solution we
have for 1.6. But given the musicpal issue you have raised, I would ask
Paolo or Jan to squash these two patches together to avoid a git-bisect
regression.

Thanks,
Andreas

> 
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> 
> -- PMM
> 


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