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powerpc: BookE hardware watchpoint support
authorLuis Machado <luisgpm@linux.vnet.ibm.com>
Wed, 23 Jul 2008 16:10:41 +0000 (02:10 +1000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Fri, 25 Jul 2008 05:44:39 +0000 (15:44 +1000)
This patch implements support for HW based watchpoint via the
DBSR_DAC (Data Address Compare) facility of the BookE processors.

It does so by interfacing with the existing DABR breakpoint code
and adding the necessary bits and pieces for the new bits to
be properly set or cleared

Signed-off-by: Luis Machado <luisgpm@br.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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