linux-kernel - Re: [PATCH RFC 1/6] [HACK!] arm64/xen: create links to arch/arm include files and Xen code

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Message-ID: <alpine.DEB.2.02.1305311259090.4799@kaball.uk.xensource.com>
Date:	Fri, 31 May 2013 13:02:04 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Catalin Marinas <catalin.marinas@....com>
CC:	Stefano Stabellini <stefano.stabellini@...citrix.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.xensource.com" <xen-devel@...ts.xensource.com>,
	Will Deacon <Will.Deacon@....com>,
	"Ian.Campbell@...rix.com" <Ian.Campbell@...rix.com>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>
Subject: Re: [PATCH RFC 1/6] [HACK!] arm64/xen: create links to arch/arm
 include files and Xen code

On Fri, 31 May 2013, Catalin Marinas wrote:
> On Thu, May 30, 2013 at 05:18:28PM +0100, Stefano Stabellini wrote:
> > Most of Xen support for ARM is common between ARMv7 and ARMv8.
> > Create links to the code under arch/arm (bleah).
> > 
> > Other, probably better alternatives:
> > 
> > - move the code to a different location, maybe the header files to
> > include/xen/arm and the code to drivers/xen/arm (still pretty ugly)?
> > 
> > - create a copy of the code to arch/arm64 (even worse);
> 
> KVM handles this in the Makefile by referencing back to arch/arm or even
> the generic kvm directory. I think that's the 'cleanest' ;)

Do you mean creating links in the Makefile or generating header file
copies from the Makefile?
Or do you mean using something like "-I arch/arm/include/asm/xen" in the
arch/arm64 Makefile?

I tried to find exactly what KVM is doing but I couldn't find the code
you are talking about..
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