From: Andi Kleen <andi@firstfloor.org>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
x86@kernel.org, Stefani Seibold <stefani@seibold.net>,
Andreas Brief <Andreas.Brief@rohde-schwarz.com>,
Martin Runge <Martin.Runge@rohde-schwarz.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86: Remove compat vdso support
Date: Mon, 10 Mar 2014 23:28:33 -0700 [thread overview]
Message-ID: <878ushgsfi.fsf@tassilo.jf.intel.com> (raw)
In-Reply-To: <775280bd6cab6345a1d340e7038d2011763bf81b.1394492341.git.luto@amacapital.net> (Andy Lutomirski's message of "Mon, 10 Mar 2014 17:12:31 -0700")
Andy Lutomirski <luto@amacapital.net> writes:
> 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.
Nack!
That breaks at least one SUSE version.
And I don't want to break performance completely there either.
int 0x80 is just too slow.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
prev parent reply other threads:[~2014-03-11 6:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-11 0:12 [PATCH] x86: Remove compat vdso support Andy Lutomirski
2014-03-11 0:13 ` H. Peter Anvin
2014-03-11 0:19 ` Andy Lutomirski
2014-03-11 0:38 ` Dave Jones
2014-03-11 0:58 ` Andy Lutomirski
2014-03-11 6:28 ` Andi Kleen [this message]
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