From: Paul Walmsley Date: Wed, 22 Dec 2010 04:08:14 +0000 (-0700) Subject: OMAP2/3: SRAM: add comment about crashes during a TLB miss X-Git-Tag: v2.6.38-rc1~469^2~15^2~27 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1124d2f9186ec9e42e1c3f78c20199ba2cb597e2;p=pandora-kernel.git OMAP2/3: SRAM: add comment about crashes during a TLB miss Some users were observing crashes during the execution of CORE DVFS code from OCM RAM -- a locally-modified copy of the linux-omap code. Richard Woodruff tracked this down to a DTLB miss which had been inadvertently and intermittently caused by the local modifications. (The TLB miss caused the ARM MMU to attempt to walk the page tables stored in SDRAM, which was not possible since SDRAM is off-line for a portion of the CORE DVFS OCM RAM code.) Add a note to the OMAP2 & OMAP3 CORE DVFS SRAM code to warn others that changes may result in crashes here if they are not carefully tested. Signed-off-by: Paul Walmsley Cc: Richard Woodruff Cc: Jon Hunter Cc: Nishanth Menon --- Reading git-diff-tree failed