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authorMichael Neuling <mikey@neuling.org>2012-12-20 14:06:44 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-01-10 17:01:44 +1100
commit9422de3e953d0e60eb95f5430a9dd803eec1c6d7 (patch)
tree7255a4a2b873a0c3daf7b312a0845202edf6b2d5 /arch/powerpc/platforms/pseries/setup.c
parenta8190a59e7440a7e3f7c0889d72a13e157988b3c (diff)
downloadlinaro-lsk-9422de3e953d0e60eb95f5430a9dd803eec1c6d7.tar.gz
powerpc: Hardware breakpoints rewrite to handle non DABR breakpoint registers
This is a rewrite so that we don't assume we are using the DABR throughout the code. We now use the arch_hw_breakpoint to store the breakpoint in a generic manner in the thread_struct, rather than storing the raw DABR value. The ptrace GET/SET_DEBUGREG interface currently passes the raw DABR in from userspace. We keep this functionality, so that future changes (like the POWER8 DAWR), will still fake the DABR to userspace. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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