From: Gilad Ben-Yossef <gilad@benyossef.com>
Date: Tue, 22 Jan 2013 11:18:45 +0000 (+0530)
Subject: ARC: Add support for ioremap_prot API
X-Git-Tag: v3.9-rc1~25^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4368902bb90f0e208387f336c3fce0e6b2a110fc;p=pandora-kernel.git

ARC: Add support for ioremap_prot API

Implement ioremap_prot() to allow mapping IO memory with variable
protection
via TLB.

Implementing this allows the /dev/mem driver to use its generic access()
VMA callback, which in turn allows ptrace to examine data in memory
mapped regions mapped via /dev/mem, such as Arc DCCM.

The end result is that it is possible to examine values of variables
placed into DCCM in user space programs via GDB.

CC: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
CC: Noam Camus <noamc@ezchip.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---

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