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author | Vincenzo Frascino <vincenzo.frascino@arm.com> | 2021-03-15 13:20:18 +0000 |
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committer | Catalin Marinas <catalin.marinas@arm.com> | 2021-04-11 10:56:40 +0100 |
commit | eab0e6e17d876381b4d47996eef3b5fd46ea4011 (patch) | |
tree | 4f7cb7317d8fc663f009db7a37b6ff4a9a2eac54 /lib | |
parent | 65812c6921cc849d86811147038dd246fa0ea18c (diff) |
arm64: mte: Report async tag faults before suspend
When MTE async mode is enabled TFSR_EL1 contains the accumulative
asynchronous tag check faults for EL1 and EL0.
During the suspend/resume operations the firmware might perform some
operations that could change the state of the register resulting in
a spurious tag check fault report.
Report asynchronous tag faults before suspend and clear the TFSR_EL1
register after resume to prevent this to happen.
Cc: Will Deacon <will@kernel.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20210315132019.33202-9-vincenzo.frascino@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions