From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Vrabel <david.vrabel@citrix.com>
Subject: Re: [PATCH 04/13] xen: sync public headers
Date: Fri, 8 Feb 2013 19:45:20 +0000
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To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Tim Deegan <tim@xen.org>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, Paul Durrant <Paul.Durrant@citrix.com>, David Vrabel <david.vrabel@citrix.com>, "jbeulich@suse.com" <jbeulich@suse.com>
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On 08/02/13 17:09, Ian Campbell wrote:
> 
> Actually, Stefano and I were discussing this the other day, the use of
> unsigned long in the evtchn stuff on ARM32 is a 32/64 ABI snafu and
> should be fixed -- using xen_ulong_t would fix this too...

Keep in mind that it must be possible to do an atomic xchg() on the
vcpu_info's evtchn_pending_sel word.  I don't think 64-bit words will
work with a 32-bit ARM guest.

David