[PATCH v2 0/2] arm64/signal: Fix handling of TPIDR2

[Mark Brown]

The restoring of TPIDR2 signal context has been broken since it was
merged, fix this and add a test case covering it.  This is a result of
TPIDR2 context management following a different flow to any of the other
state that we provide and the fact that we don't expose TPIDR (which
follows the same pattern) to signals.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
Changes in v2:
- Added a feature check for SME to the new test.
- Link to v1: https://lore.kernel.org/r/20230621-arm64-fix-tpidr2-signal-restore-v1-0-b6d9e584d2ee@kernel.org

---
Mark Brown (2):
      arm64/signal: Restore TPIDR2 register rather than memory state
      kselftest/arm64: Add a test case for TPIDR2 restore

 arch/arm64/kernel/signal.c                         |  2 +-
 tools/testing/selftests/arm64/signal/.gitignore    |  2 +-
 .../arm64/signal/testcases/tpidr2_restore.c        | 86 ++++++++++++++++++++++
 3 files changed, 88 insertions(+), 2 deletions(-)
---
base-commit: 858fd168a95c5b9669aac8db6c14a9aeab446375
change-id: 20230621-arm64-fix-tpidr2-signal-restore-713d93798f99

Best regards,
-- 
Mark Brown <broonie at kernel.org>