linux-kernel - Re: [PATCH] x86: Remove compat vdso support

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Message-ID: <20140311003856.GA4203@redhat.com>
Date:	Mon, 10 Mar 2014 20:38:56 -0400
From:	Dave Jones <davej@...hat.com>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	X86 ML <x86@...nel.org>, Stefani Seibold <stefani@...bold.net>,
	Andreas Brief <Andreas.Brief@...de-schwarz.com>,
	Martin Runge <Martin.Runge@...de-schwarz.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: Remove compat vdso support

On Mon, Mar 10, 2014 at 05:19:27PM -0700, Andy Lutomirski wrote:
 > On Mon, Mar 10, 2014 at 5:13 PM, H. Peter Anvin <hpa@...ux.intel.com> wrote:
 > > On 03/10/2014 05:12 PM, Andy Lutomirski wrote:
 > >> The compat vDSO is a complicated hack that's needed to maintain
 > >> compatibility with a small range of never-released glibc versions.
 > >>
 > >> This removes it and replaces it with a much simpler hack: a config
 > >> option to disable the 32-bit vDSO by default.
 > >>
 > >> Signed-off-by: Andy Lutomirski <luto@...capital.net>
 > >
 > > Can we verify this works correctly on the affected distributions?
 > 
 > It works correctly on Fedora 20 32-bit and 64-bit.

I went and dug through the SRPMs at https://archives.fedoraproject.org
Fedora hasn't ever shipped with COMPAT_VDSO enabled.
Before FC6 (kernel 2.6.18), the option never existed.

	Dave

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