From: Markos Chandras Date: Mon, 26 Jan 2015 09:40:36 +0000 (+0000) Subject: MIPS: asm: pgtable: Prevent HTW race when updating PTEs X-Git-Tag: fixes-v4.0-rc1~21^2~34 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fde3538a8a711aedf1173ecb2d45aed868f51c97;p=pandora-kernel.git MIPS: asm: pgtable: Prevent HTW race when updating PTEs Whenever we modify a page table entry, we need to ensure that the HTW will not fetch a stable entry. And for that to happen we need to ensure that HTW is stopped before we modify the said entry otherwise the HTW may already be in the process of reading that entry and fetching the old information. As a result of which, we replace the htw_reset() calls with htw_{stop,start} in more appropriate places. This also removes the remaining users of htw_reset() and as a result we drop that macro Signed-off-by: Markos Chandras Cc: # 3.17+ Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9116/ Signed-off-by: Ralf Baechle --- Reading git-diff-tree failed