From: Michael Ellerman Date: Wed, 16 Jul 2008 04:21:34 +0000 (+1000) Subject: powerpc: Streamline ret_from_except_lite for non-iSeries platforms X-Git-Tag: v2.6.28-rc1~569^2~96 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01f3880dd8a7fa78c419da2db740cba511ca7798;p=pandora-kernel.git powerpc: Streamline ret_from_except_lite for non-iSeries platforms There is a small passage of code in ret_from_except_lite which is only required on iSeries. For a multi-platform kernel on non-iSeries machines this means we end up executing ~15 nops in ret_from_except_lite. It would be nicer if non-iSeries could skip the code entirely, and on iSeries we can jump out of line to execute the code. I have no performance numbers to justify this, other than the assertion that executing 15 nops takes longer than executing 0. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras --- Reading git-diff-tree failed