| commit | 22c9e58299e5f18274788ce54c03d4fb761e3c5d | [log] [tgz] |
|---|---|---|
| author | Douglas Anderson <dianders@chromium.org> | Thu Aug 06 23:24:35 2020 +0100 |
| committer | Russell King <rmk+kernel@armlinux.org.uk> | Tue Sep 15 14:35:24 2020 +0100 |
| tree | eb1dfe94f252af7e42a232c650d48c75da5bd9f3 | |
| parent | f75aef392f869018f78cfedf3c320a6b3fcfda6b [diff] |
ARM: 8997/2: hw_breakpoint: Handle inexact watchpoint addresses
This is commit fdfeff0f9e3d ("arm64: hw_breakpoint: Handle inexact
watchpoint addresses") but ported to arm32, which has the same
problem.
This problem was found by Android CTS tests, notably the
"watchpoint_imprecise" test [1]. I tested locally against a copycat
(simplified) version of the test though.
[1] https://android.googlesource.com/platform/bionic/+/master/tests/sys_ptrace_test.cpp
Link: https://lkml.kernel.org/r/20191019111216.1.I82eae759ca6dc28a245b043f485ca490e3015321@changeid
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>