From: Brian Gerst <brgerst@gmail.com>
Date: Wed, 25 Nov 2009 16:17:36 +0000 (-0500)
Subject: x86, 64-bit: Set data segments to null after switching to 64-bit mode
X-Git-Tag: v2.6.33-rc1~396^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ec6993d9f7d961014af970ded57542961fe9ad9;p=pandora-kernel.git

x86, 64-bit: Set data segments to null after switching to 64-bit mode

This prevents kernel threads from inheriting non-null segment
selectors, and causing optimizations in __switch_to() to be
ineffective.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Cc: Tim Blechmann <tim@klingt.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Jan Beulich <JBeulich@novell.com>
LKML-Reference: <1259165856-3512-1-git-send-email-brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

Reading git-diff-tree failed