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Date: Tue, 6 May 2014 10:41:33 +1000
From: Paul Mackerras <paulus@samba.org>
To: Alexander Graf <agraf@suse.de>
Subject: Re: [PATCH V4] POWERPC: BOOK3S: KVM: Use the saved dar value and
 generic make_dsisr
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Cc: linuxppc-dev@lists.ozlabs.org,
 "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, kvm-ppc@vger.kernel.org,
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On Mon, May 05, 2014 at 01:19:30PM +0200, Alexander Graf wrote:
> On 05/04/2014 07:21 PM, Aneesh Kumar K.V wrote:
> >+#ifdef CONFIG_PPC_BOOK3S_64
> >+	return vcpu->arch.fault_dar;
> 
> How about PA6T and G5s?

G5 sets DAR on an alignment interrupt.

As for PA6T, I don't know for sure, but if it doesn't, ordinary
alignment interrupts wouldn't be handled properly, since the code in
arch/powerpc/kernel/align.c assumes DAR contains the address being
accessed on all PowerPC CPUs.

Did PA Semi ever publish a user manual for the PA6T, I wonder?

Paul.