[v2,0/3] RISC-V: enable rust

Message

Conor Dooley Feb. 23, 2024, 1:38 p.m. UTC

From: Conor Dooley <[e-mail]>

Now with a patch to disable RUST if CFI_CLANG is enabled.
I've also intentionally not turned on the gcc support, as discussed on
v1.

As this was lifted from the state of the Rust-for-Linux tree, the commit
messages from there cannot be preserved, so these patches have commit
messages that I wrote.

I've tested this on Icicle, and the modules seem to work as expected.
Unfortunately there appear to be implicit 32-bit divisions (or similar)
in core Rust code, so, as in the downstream Rust-for-Linux tree, Rust is
only enabled for 64-bit.

Thanks,
Conor.

Changes in v2:
- Rebase, since a good bit of time has passed!
- Add the extra patch, disabling when CFI_CLANG is enabled.

Changes in v1:
- rebase on v6.3-rc1
- resort the `um` entry in the arch-support table while adding RISC-V
  to it
- drop 32-bit bits
- have another crack at assigning authorship

Changes in RFC-RESEND:
- fix the asymmetrical additions in the Makefile bits
- add cc-cover to my git send-email command...

CC: Miguel Ojeda <[e-mail]>
CC: Alex Gaynor <[e-mail]>
CC: Wedson Almeida Filho <[e-mail]>
CC: Boqun Feng <[e-mail]>
CC: Gary Guo <[e-mail]>
CC: Björn Roy Baron <[e-mail]>
CC: Jonathan Corbet <[e-mail]>
CC: Paul Walmsley <[e-mail]>
CC: Palmer Dabbelt <[e-mail]>
CC: Nathan Chancellor <[e-mail]>
CC: Nick Desaulniers <[e-mail]>
CC: Tom Rix <[e-mail]>
CC: [e-mail]
CC: [e-mail]
CC: [e-mail]
CC: [e-mail]
CC: [e-mail]

Conor Dooley (1):
  rust: make mutually exclusive with CFI_CLANG

Miguel Ojeda (2):
  scripts: generate_rust_target: enable building on RISC-V
  RISC-V: enable building 64-bit kernels with rust support

 Documentation/rust/arch-support.rst |  1 +
 arch/riscv/Kconfig                  |  1 +
 arch/riscv/Makefile                 |  2 ++
 init/Kconfig                        |  1 +
 scripts/generate_rust_target.rs     | 16 ++++++++++++++++
 5 files changed, 21 insertions(+)