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authorGilad Ben-Yossef <gilad@benyossef.com>2013-01-22 15:18:45 +0400
committerVineet Gupta <vgupta@synopsys.com>2013-02-15 21:46:11 +0400
commit4368902bb90f0e208387f336c3fce0e6b2a110fc (patch)
tree70d3927c8cd38e32a969ea340ec370ebeb16f30c /arch/arc/Kconfig
parent8c2f4a8dd0e0fc9dcaf14c768544039eddfa7375 (diff)
downloadlinux-4368902bb90f0e208387f336c3fce0e6b2a110fc.tar.xz
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>
Diffstat (limited to 'arch/arc/Kconfig')
-rw-r--r--arch/arc/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index cd4ad61c4c14..2dab40dd8161 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -25,6 +25,7 @@ config ARC
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_HARDIRQS
+ select HAVE_IOREMAP_PROT
select HAVE_IRQ_WORK
select HAVE_KPROBES
select HAVE_KRETPROBES