| commit | 30124d11097e371e42052144d8a3f4a78d26e09f | |
| author | Dave Kleikamp <shaggy@linux.vnet.ibm.com> | |
| Mon, 1 Mar 2010 04:57:34 +0000 (1 04:57 +0000) | ||
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | |
| Tue, 9 Mar 2010 00:57:10 +0000 (9 11:57 +1100) | ||
| tree | b37404e0b2c653c099401eea7e9bc988eaa84bb1 | treesnapshot (tar.gz zip) |
| parent | a8e6da093ea8642b1320fb5d64134366f2a8d0ac | commitdiff |
powerpc/booke: Fix breakpoint/watchpoint one-shot behavior
Another fix for the extended ptrace patches in the -next tree.
The handling of breakpoints and watchpoints is inconsistent. When a
breakpoint or watchpoint is hit, the interrupt handler is clearing the
proper bits in the dbcr* registers, but leaving the dac* and iac* registers
alone. The ptrace code to delete the break/watchpoints checks the dac* and
iac* registers for zero to determine if they are enabled. Instead, they
should check the dbcr* bits.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Another fix for the extended ptrace patches in the -next tree.
The handling of breakpoints and watchpoints is inconsistent. When a
breakpoint or watchpoint is hit, the interrupt handler is clearing the
proper bits in the dbcr* registers, but leaving the dac* and iac* registers
alone. The ptrace code to delete the break/watchpoints checks the dac* and
iac* registers for zero to determine if they are enabled. Instead, they
should check the dbcr* bits.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| arch/powerpc/kernel/ptrace.c | diffblobblamehistory |