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Date: Mon, 20 Jun 2016 19:32:16 +1000
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Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH 01/10] ppc: Fix
 rfi/rfid/hrfi/... emulation
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To: =?ISO-8859-1?Q?C=E9dric?= Le Goater <clg@kaod.org>, Alexander Graf <agraf@suse.de>
Cc: Thomas Huth <thuth@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, qemu-ppc@nongnu.org, qemu-devel@nongnu.org

On Mon, 2016-06-20 at 18:02 +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2016-06-20 at 17:08 +1000, Benjamin Herrenschmidt wrote:
> > =C2=A0
> > That fixed, it dies elsewhere in something related to page faults,
> > still digging.
> > =C2=A0
> Next problem: Darwin kernel assumes DSISR is 0 on a 0x380 exception !
>=20
> qemu was leaving it to whatever value it had before. Kaboom.
>=20
> Now it crashes a bit further :-)

Right so it tries to load a MacRISC2 PE because we don't really emulate
a MacRISC4 with U3 etc... and that isn't going to do it any good,
really..

I'm not *actually* sure where MacOS gets itself into a spin, it seems
to be poking at something at 0xf280_0000 which is somewhat odd as this
would be the IO space and we have nothing there afaik, but I am not
enough of a MacOS expert to figure out quite how to track down which
kext it gets into etc...

In any case, the machine we give it is definitely nowhere near a real
G5 and that might be the main reason. More work needed.

I'll still cleanup & submit my current crop of fixes in case somebody
wants to have a look.

Cheers,
Ben.