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From: Thomas Huth <thuth@redhat.com>
Message-ID: <5763A258.2010408@redhat.com>
Date: Fri, 17 Jun 2016 09:10:16 +0200
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Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH 01/10] ppc: Fix
 rfi/rfid/hrfi/... emulation
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To: =?UTF-8?Q?C=c3=a9dric_Le_Goater?= <clg@kaod.org>, David Gibson <david@gibson.dropbear.id.au>
Cc: qemu-ppc@nongnu.org, qemu-devel@nongnu.org

On 17.06.2016 08:03, C=C3=A9dric Le Goater wrote:
> On 06/17/2016 07:54 AM, C=C3=A9dric Le Goater wrote:
>> On 06/17/2016 04:27 AM, David Gibson wrote:
>>> On Thu, Jun 16, 2016 at 11:07:02AM +1000, David Gibson wrote:
>>>> On Mon, Jun 13, 2016 at 07:24:47AM +0200, C=C3=A9dric Le Goater wrot=
e:
>>>>> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>>>>>
>>>>> This reworks emulation of the various "rfi" variants. I removed
>>>>> some masking bits that I couldn't make sense of, the only bit that
>>>>> I am aware we should mask here is POW, the CPU's MSR mask should
>>>>> take care of the rest.
>>>>>
>>>>> This also fixes some problems when running 32-bit userspace under
>>>>> a 64-bit kernel.
>>>>>
>>>>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>>>>> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
>>>>
>>>> I've merged this patch to ppc-for-2.7.
>>>
>>> ..and now I've removed it again.  It seems that this breaks Thomas'
>>> new test that OpenBIOS runs on the mac machine types.  Not sure why,
>>> but we need to figure that out before I apply.
>>
>> Just this patch ? I booted a macosx image with it. but maybe just a ma=
c99.
>> I will check today.
>=20
> With your branch ppc-for-2.7 (at commit aba2e6258d86) + the=20
> "ppc: Fix rfi/rfid/hrfi/... emulation" patch, these guests :=20
>=20
> 	qemu-system-ppc -cdrom ./darwinppc-602.cdr -boot d=20
> 	qemu-system-ppc -M mac99 -cdrom ./darwinppc-602.cdr -boot d=20
                       ^
                       |
You're missing the "64" here ;-)

> reach the installer macosx installer.

It seems to be only failing for the 64-bit builds - and there only for
the PPC970 CPU (which is the default for the mac99 machine in 64-bit
builds):

qemu-system-ppc64 -nographic -cpu 750 -M mac99 =3D=3D> works fine

qemu-system-ppc64 -nographic -cpu 970 -M mac99 =3D=3D> hangs

 Thomas