[PATCH v3 0/2] Rust and the shadow call stack sanitizer

[Alice Ryhl <aliceryhl@google.com>]

This patch series makes it possible to use Rust together with the shadow
call stack sanitizer. The first patch is intended to be backported to
ensure that people don't try to use SCS with Rust on older kernel
versions. The second patch makes it possible to use Rust with the shadow
call stack sanitizer.

The second patch in this series doesn't make sense without [1], though
it doesn't break the build if [1] is missing.

Link: https://lore.kernel.org/rust-for-linux/20240701183625.665574-12-ojeda@kernel.org/ [1]
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
---
Changes in v3:
- Use -Zfixed-x18.
- Add logic to reject unsupported rustc versions.
- Also include a fix to be backported.
- Link to v2: https://lore.kernel.org/rust-for-linux/20240305-shadow-call-stack-v2-1-c7b4a3f4d616@google.com/

Changes in v2:
- Add -Cforce-unwind-tables flag.
- Link to v1: https://lore.kernel.org/rust-for-linux/20240304-shadow-call-stack-v1-1-f055eaf40a2c@google.com/

---
Alice Ryhl (2):
      rust: SHADOW_CALL_STACK is incompatible with Rust
      rust: add flags for shadow call stack sanitizer

 Makefile            | 1 +
 arch/Kconfig        | 1 +
 arch/arm64/Makefile | 3 +++
 3 files changed, 5 insertions(+)
---
base-commit: 83b1e6e4170cf96b2a7c49070dd43749649f454e
change-id: 20240304-shadow-call-stack-9c197a4361d9

Best regards,
-- 
Alice Ryhl <aliceryhl@google.com>