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powerpc/watchpoint/xmon: Don't allow breakpoint overwriting
authorRavi Bangoria <ravi.bangoria@linux.ibm.com>
Thu, 14 May 2020 11:17:40 +0000 (16:47 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Mon, 18 May 2020 14:14:45 +0000 (00:14 +1000)
commit514db915e7b33e7eaf8e40192b93380f79b319b5
tree1610520c4f5fa51cf52d44e5973bebc9a8422614tree | snapshot
parent29da4f91c0c1fbda12b8a31be0d564930208c92ecommit | diff
powerpc/watchpoint/xmon: Don't allow breakpoint overwriting

Xmon allows overwriting breakpoints because it's supported by only
one DAWR. But with multiple DAWRs, overwriting becomes ambiguous
or unnecessary complicated. So let's not allow it.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Michael Neuling <mikey@neuling.org>
Link: https://lore.kernel.org/r/20200514111741.97993-16-ravi.bangoria@linux.ibm.com
arch/powerpc/xmon/xmon.c diff | blob | history
Domain: System / Kernel;