Re: [Qemu-devel] [PATCH 3/3] memory: Return -1 again on reads from unsigned regions

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2013-07-29 16:59, Andreas Färber wrote:
> Am 16.07.2013 17:31, schrieb Paolo Bonzini:
>> From: Jan Kiszka <jan.kiszka@siemens.com>
>>
>> This restore the behavior prior to b018ddf633 which accidentally changed
>> the return code to 0. Specifically guests probing for register existence
>> were affected by this.
>>
>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> 
> Unfortunately this negatively affects PReP: OpenHack'Ware booting Debian
> Etch prints:
> 
> ERROR: WIN_READ_NATIVE_MAX : status 50 != 0x40
> 
> It does continue if one is patient enough.
> No problems before this commit.
> 
> Any ideas, except that OHW may be doing Bad Things?

Which accesses return different results now, PIO or MMIO? What did they
return prior to b018ddf633?

Jan

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