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Date: Mon, 29 Jul 2013 17:01:37 +0200
From: Jan Kiszka <jan.kiszka@siemens.com>
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Subject: Re: [Qemu-devel] [PATCH 3/3] memory: Return -1 again on reads from
 unsigned regions
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To: =?ISO-8859-15?Q?Andreas_F=E4rber?= <andreas.faerber@web.de>
Cc: peter.maydell@linaro.org, stefanha@redhat.com, qemu-devel@nongnu.org, =?ISO-8859-15?Q?Herv=E9_Poussineau?= <hpoussin@reactos.org>, Anthony Liguori <anthony@codemonkey.ws>, Paolo Bonzini <pbonzini@redhat.com>

On 2013-07-29 16:59, Andreas F=E4rber 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 chang=
ed
>> the return code to 0. Specifically guests probing for register existen=
ce
>> were affected by this.
>>
>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>=20
> Unfortunately this negatively affects PReP: OpenHack'Ware booting Debia=
n
> Etch prints:
>=20
> ERROR: WIN_READ_NATIVE_MAX : status 50 !=3D 0x40
>=20
> It does continue if one is patient enough.
> No problems before this commit.
>=20
> 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

--=20
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux