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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 08:35 +1000, Benjamin Herrenschmidt wrote:
>=C2=A0,
> Ok so Darwin uses some of the HSPRG etc... that we don't emulate on
> the 970 so I suspect it never worked. I've added them but something
> else breaks, I'll dig, I have the kernel source so it shouldn't be
> too hard
> ;-)

Well, it ended up being harder than I thought. In fact I'm not there
yet ! So the Darwin VM layer dies early because HID5 isn't set
properly, thus dcbz is doing 128 bytes clear instead of 32, clobbering
things.

It looks like Apple's kernel doesn't set the right default in HID5, so
we have to either do it in openbios or in qemu. Alex, what did you find
out back in the day ? Or you never bothered running a 64-bit MacOS
under PR KVM ?

That fixed, it dies elsewhere in something related to page faults,
still digging.

Cheers,
Ben.