From: Stas Sergeev Date: Thu, 7 Dec 2006 01:14:01 +0000 (+0100) Subject: [PATCH] i386: espfix cleanup X-Git-Tag: v2.6.20-rc1~145^2^2~8^2~139 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be44d2aabce2d62f72d5751d1871b6212bf7a1c7;p=pandora-kernel.git [PATCH] i386: espfix cleanup Clean up the espfix code: - Introduced PER_CPU() macro to be used from asm - Introduced GET_DESC_BASE() macro to be used from asm - Rewrote the fixup code in asm, as calling a C code with the altered %ss appeared to be unsafe - No longer altering the stack from a .fixup section - 16bit per-cpu stack is no longer used, instead the stack segment base is patched the way so that the high word of the kernel and user %esp are the same. - Added the limit-patching for the espfix segment. (Chuck Ebbert) [jeremy@goop.org: use the x86 scaling addressing mode rather than shifting] Signed-off-by: Stas Sergeev Signed-off-by: Andi Kleen Acked-by: Zachary Amsden Acked-by: Chuck Ebbert <76306.1226@compuserve.com> Acked-by: Jan Beulich Cc: Andi Kleen Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Andrew Morton --- Reading git-diff-tree failed