From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: [PATCH v8 4/7] xen/arm: Add virtual GICv3 support
Date: Mon, 28 Jul 2014 15:55:53 +0100
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Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Prasun Kapoor <Prasun.Kapoor@caviumnetworks.com>, Vijaya Kumar K <vijaya.kumar@caviumnetworks.com>, Julien Grall <julien.grall@linaro.org>, Tim Deegan <tim@xen.org>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, Stefano Stabellini <stefano.stabellini@citrix.com>, Jan Beulich <jbeulich@suse.com>, manish.jaggi@caviumnetworks.com
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On Mon, 2014-07-28 at 15:35 +0100, Ian Campbell wrote:
> FYI I'm seeing a trap in gicv3_init when running on a model. I haven't
> tracked it down to an actual location yet though. I'll let you know what
> I find.

The access to ICC_BPR1_EL1 in gicv3_cpu_init is faulting for some
reason. do_hyp_trap is then access current-> but it is too soon to do
that, hence a data abort occurs which is what I was seeing.

This is on a fast model with the boot-wrapper, perhaps the "firmware"
failed to setup something?

BTW, ICC_BPR1_EL1 is the secure alias of the NS version of the register.
Why not just use the NS version directly?

Ian.