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Re: [Qemu-ppc] [Qemu-devel] [PATCH] PPC: fix PCI configuration space Mem

From: Alexander Graf
Subject: Re: [Qemu-ppc] [Qemu-devel] [PATCH] PPC: fix PCI configuration space MemoryRegions for grackle/uninorth
Date: Wed, 18 Dec 2013 23:10:02 +0100

On 18.12.2013, at 23:07, Alexander Graf <address@hidden> wrote:

> On 18.12.2013, at 23:04, Benjamin Herrenschmidt <address@hidden> wrote:
>> On Wed, 2013-12-18 at 22:24 +0100, Alexander Graf wrote:
>>> Then I don't understand why we break when we limit the data region to
>>> 4 bytes.
>> This is old uninorth, not U3 HT right ? The latter is memory mapped.
> Depends, we use the same code to cover both. With 32bit guests we expose an 
> old UniNorth. With 64bit guests we have to expose a U3 as the guest doesn't 
> know what old UniNorth is anymore.
> So yeah, maybe that's biting us.

But then again the breaking case was with a G4 which was 32bit so it should 
have emulated an old UniNorth. Hrm.


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