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c1bb9a9c19
The slave cpus do not have the hw breakpoints disabled upon entry to
the debug_core and as a result could cause unrecoverable recursive
faults on badly placed breakpoints, or get out of sync with the arch
specific hw breakpoint operations.
This patch addresses the problem by invoking kgdb_disable_hw_debug()
earlier in kgdb_enter_cpu for each cpu that enters the debug core.
The hw breakpoint dis/enable flow should be:
master_debug_cpu slave_debug_cpu
\ /
kgdb_cpu_enter
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kgdb_disable_hw_debug --> uninstall pre-enabled hw_breakpoint
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do add/rm dis/enable operates to hw_breakpoints on master_debug_cpu..
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correct_hw_break --> correct/install the enabled hw_breakpoint
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leave_kgdb
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
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| .. | ||
| kdb | ||
| debug_core.c | ||
| debug_core.h | ||
| gdbstub.c | ||
| Makefile | ||