linux-kernel - Re: [uml-devel] [PATCH] fix UML on x86-64

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Message-ID: <20080507032611.GA15155@c2.user-mode-linux.org>
Date:	Tue, 6 May 2008 23:26:11 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Ulrich Drepper <drepper@...hat.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	akpm@...ux-foundation.org, mingo@...e.hu, tglx@...utronix.de,
	linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net
Subject: Re: [uml-devel] [PATCH] fix UML on x86-64

On Tue, May 06, 2008 at 04:38:54PM -0700, Ulrich Drepper wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Linus Torvalds wrote:
> > It breaks things how?
> 
> A crash on startup:

It seems that initcalls from the libc side of the house aren't being
called because they're not in the initcall section.  The one that
matters here is init_syscall_regs in arch/um/os-Linux/skas/mem.c.  If
you run with initcall_debug, you'll notice its absence.  As to why,
and why it depends on -fno-unit-at-a-time, I have no idea.

    	   	   Jeff

-- 
Work email - jdike at linux dot intel dot com
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