linux-kernel - Re: [PATCH XEN] xen: event channel arrays are xen_ulong

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Message-Id: <51273EE602000078000C03DC@nat28.tlf.novell.com>
Date:	Fri, 22 Feb 2013 08:48:22 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Ian Campbell" <Ian.Campbell@...rix.com>
Cc:	"Stefano Stabellini" <Stefano.Stabellini@...citrix.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"xen-devel@...ts.xen.org" <xen-devel@...ts.xen.org>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Keir(Xen.org)" <keir@....org>, "Tim (Xen.org)" <tim@....org>
Subject: Re: [PATCH XEN] xen: event channel arrays are xen_ulong_t and
 not unsigned long

>>> On 22.02.13 at 09:28, Ian Campbell <Ian.Campbell@...rix.com> wrote:
> On Fri, 2013-02-22 at 08:12 +0000, Jan Beulich wrote:
>> >>> On 21.02.13 at 18:16, Ian Campbell <Ian.Campbell@...rix.com> wrote:
>> > On Tue, 2013-02-19 at 14:49 +0000, Ian Campbell wrote:
>> >> On ARM we want these to be the same size on 32- and 64-bit.
>> >> 
>> >> This is an ABI change on ARM. X86 does not change.
>> >> 
>> >> Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
>> >> Cc: Jan Beulich <JBeulich@...e.com>
>> >> Cc: Keir (Xen.org) <keir@....org>
>> > 
>> > Are you guys (un)happy with this change from the Xen & x86 side?
>> 
>> I don't see any problem with it.
> 
> I'll take this as an Acked-by if that's ok with you.

Well, I specifically didn't say "ack": I don't really mind the change,
but I'm also not eager see it go in. Not seeing a problem with it
doesn't really mean there's none lurking - type changes in public
interfaces are always an at least slightly risky business.

Jan

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