linux-kernel - Re: "hwcap 0 nosegneg" doesnt work with paravirt

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Message-Id: <20071128224359.2B5CA26F8E7@magilla.localdomain>
Date:	Wed, 28 Nov 2007 14:43:59 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andres Freund <andres@...razel.de>, xen-devel@...ts.xensource.com,
	linux-kernel@...r.kernel.org
Subject: Re: "hwcap 0 nosegneg" doesnt work with paravirt_ops xen as of 2.6.23.9

> > /etc/ld.so.conf.d/xen.conf:
> > hwcap 0 nosegneg
> 
> This looks OK. [...]

No, it does not match this:

	/* Bit used for the pseudo-hwcap for non-negative segments.  We use
	   bit 1 to avoid bugs in some versions of glibc when bit 0 is
	   used; the choice is otherwise arbitrary. */
	#define VDSO_NOTE_NONEGSEG_BIT	1

You really want "hwcap 1 nosegneg" given that.
Yes, we've been over this several times already.


Thanks,
Roland
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