From: Martin Schwidefsky Date: Mon, 25 Oct 2010 14:10:07 +0000 (+0200) Subject: [S390] zero page cache synonyms X-Git-Tag: v2.6.37-rc1~125^2~47 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=238ec4efeee4461d5cff2ed3e5a15a3ab850959b;p=pandora-kernel.git [S390] zero page cache synonyms If the zero page is mapped to virtual user space addresses that differ only in bit 2^12 or 2^13 we get L1 cache synonyms which can affect performance. Follow the mips model and use multiple zero pages to avoid the synonyms. Signed-off-by: Martin Schwidefsky --- Reading git-diff-tree failed