From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoffer Dall <christoffer.dall@linaro.org>
Subject: Re: [PATCH] xen: arm: X-Gene Storm check GIC DIST
 address for EOI quirk
Date: Wed, 8 Apr 2015 10:28:47 +0200
Message-ID: <20150408082847.GB4715@cbox>
References: <1428310441-5412-1-git-send-email-pranavkumar@linaro.org>
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To: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Cc: patches@apm.com, stefano.stabellini@citrix.com, xen-devel@lists.xen.org
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Hi Pranav,

On Mon, Apr 06, 2015 at 02:24:01PM +0530, Pranavkumar Sawargaonkar wrote:
> In old X-Gene Storm firmware and DT, secure mode addresses have been
> mentioned in GICv2 node. In this case maintenance interrupt is used
> instead of EOI HW method.
> 
> This patch checks the GIC Distributor Base Address to enable EOI quirk
> for old firmware.
> 
> Ref:
> http://lists.xen.org/archives/html/xen-devel/2014-07/msg01263.html
> 
> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>

I have tested this on the m400 cluster and can confirm that it prevents
the issue with ab trashing the machine:

Tested-by: Christoffer Dall <christoffer.dall@linaro.org>