linux-kernel - Re: [uml-devel] [PATCH 1/5] um: Use __i386__ in ifdef for vsyscall exports, not SUBARCH

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Message-ID: <20110801172303.GH2203@ZenIV.linux.org.uk>
Date:	Mon, 1 Aug 2011 18:23:03 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	richard -rw- weinberger <richard.weinberger@...il.com>,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	Arnaud Lacombe <lacombar@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: [uml-devel] [PATCH 1/5] um: Use __i386__ in ifdef for vsyscall
 exports, not SUBARCH_i386

On Mon, Aug 01, 2011 at 12:04:37PM +0200, Geert Uytterhoeven wrote:
> > Yes. ??Resurrected is not the right word here, sorry...
> 
> Oh, what a disappointment. I really hoped it was true...
> 
> BTW, how much work would it be to port UML to ARM? Would be nice-to-have on
> your Android phone, as it can provide a full Linux userspace without
> requiring rooting
> the phone.

Moderately unpleasant, but not fatally so.  I have no idea how often will
cache aliasing bite you, though.  We really need to get non-x86 ports
working to see how many portability issues are there; what I've got for
ppc is promising, but very preliminary...
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