Commits
Will Deacon committed 3ce70b2e24c
ARM: hw_breakpoint: disallow per-cpu breakpoints without overflow handler Single-stepping a breakpoint requires us to disable it temporarily so that we don't get stuck in a recursive debug trap. With per-cpu breakpoints this presents a problem where an interrupt can be taken before the single-step has completed and a new task is eventually scheduled. This new task will not hit the breakpoint because it will have been disabled during the previous handling code. This patch disallows per-cpu breakpoints on ARM when an overflow handler is not present. A similar effect can be created by placing breakpoints on a shell and then running applications there. Signed-off-by: Will Deacon <will.deacon@arm.com>