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From: Andreas Schwab <schwab@linux-m68k.org>
To: Anton Blanchard <anton@samba.org>
Subject: Re: [patch 1/3] powerpc: Move 64bit VDSO to improve context switch
	performance
References: <20090714065350.659537380@samba.org>
	<20090714065425.301516312@samba.org>
Date: Fri, 02 Oct 2009 21:14:37 +0200
In-Reply-To: <20090714065425.301516312@samba.org> (Anton Blanchard's message
	of "Tue, 14 Jul 2009 16:53:51 +1000")
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Anton Blanchard <anton@samba.org> writes:

> On 64bit applications the VDSO is the only thing in segment 0. Since the VDSO
> is position independent we can remove the hint and let get_unmapped_area pick
> an area.

This breaks gdb.  The section table in the VDSO image when mapped into
the process no longer contains meaningful values, and gdb rejects it.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."