From: sukadev@linux.vnet.ibm.com Date: Tue, 30 Aug 2011 09:19:17 +0000 (+0000) Subject: powerpc: Implement CONFIG_STRICT_DEVMEM X-Git-Tag: v3.3-rc1~181^2~60 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d54cf2b973a6265789b382b7d305771321b9b57;p=pandora-kernel.git powerpc: Implement CONFIG_STRICT_DEVMEM As described in the help text in the patch, this token restricts general access to /dev/mem as a way of increasing the security. Specifically, access to exclusive IOMEM and kernel RAM is denied unless CONFIG_STRICT_DEVMEM is set to 'n'. Implement the 'devmem_is_allowed()' interface for Powerpc. It will be called from range_is_allowed() when userpsace attempts to access /dev/mem. This patch is based on an earlier patch from Steve Best and with input from Paul Mackerras and Scott Wood. [BenH] Fixed a typo or two and removed the generic change which should be submitted as a separate patch Signed-off-by: Sukadev Bhattiprolu Signed-off-by: Benjamin Herrenschmidt --- Reading git-diff-tree failed