linux-kernel - Re: [PATCH v4] arm: remove !CPU_V6 and !GENERIC

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Message-ID: <alpine.DEB.2.02.1401211817350.21510@kaball.uk.xensource.com>
Date:	Tue, 21 Jan 2014 18:17:47 +0000
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Will Deacon <will.deacon@....com>
CC:	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	"jaccon.bastiaansen@...il.com" <jaccon.bastiaansen@...il.com>,
	"arnd@...db.de" <arnd@...db.de>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>
Subject: Re: [PATCH v4] arm: remove !CPU_V6 and !GENERIC_ATOMIC64 build
 dependencies for XEN

On Tue, 21 Jan 2014, Will Deacon wrote:
> On Tue, Jan 21, 2014 at 01:44:24PM +0000, Stefano Stabellini wrote:
> > Remove !GENERIC_ATOMIC64 build dependency:
> > - introduce xen_atomic64_xchg
> > - use it to implement xchg_xen_ulong
> > 
> > Remove !CPU_V6 build dependency:
> > - introduce __cmpxchg8 and __cmpxchg16, compiled even ifdef
> >   CONFIG_CPU_V6
> > - implement sync_cmpxchg using __cmpxchg8 and __cmpxchg16
> > 
> > Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
> > CC: arnd@...db.de
> > CC: linux@....linux.org.uk
> > CC: will.deacon@....com
> > CC: catalin.marinas@....com
> > CC: linux-arm-kernel@...ts.infradead.org
> > CC: linux-kernel@...r.kernel.org
> > CC: xen-devel@...ts.xenproject.org
> 
>   Reviewed-by: Will Deacon <will.deacon@....com>
> 
> Cheers Stefano,

Thanks!!
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