linux/arch/riscv
Miguel Ojeda 70a57b2472
RISC-V: enable building 64-bit kernels with rust support
The rust modules work on 64-bit RISC-V, with no twiddling required.
Select HAVE_RUST and provide the required flags to kbuild so that the
modules can be used. The Makefile and Kconfig changes are lifted from
work done by Miguel in the Rust-for-Linux tree, hence his authorship.
Following the rabbit hole, the Makefile changes originated in a script,
created based on config files originally added by Gary, hence his
co-authorship.

32-bit is broken in core rust code, so support is limited to 64-bit:
ld.lld: error: undefined symbol: __udivdi3

As 64-bit RISC-V is now supported, add it to the arch support table.

Co-developed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Co-developed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240409-silencer-book-ce1320f06aab@spud
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-04-28 14:50:34 -07:00
..
boot RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
configs RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
crypto crypto: riscv - add vector crypto accelerated AES-CBC-CTS 2024-03-20 08:56:11 -07:00
errata riscv: errata: Rename defines for Andes 2024-03-12 07:13:12 -07:00
include Merge patch series "Rework & improve riscv cmpxchg.h and atomic.h" 2024-04-28 14:50:33 -07:00
kernel riscv: remove unused header 2024-03-27 07:23:23 -07:00
kvm KVM/riscv changes for 6.9 2024-03-11 10:10:48 -04:00
lib RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
mm RISC-V Patches for the 6.9 Merge Window 2024-03-22 10:41:13 -07:00
net bpf, riscv64/cfi: Support kCFI + BPF on riscv64 2024-03-06 15:18:16 -08:00
purgatory riscv: Use SYM_*() assembly macros instead of deprecated ones 2023-11-06 09:42:47 -08:00
tools riscv: Check relocations at compile time 2023-04-19 07:46:32 -07:00
Kbuild RISC-V: hook new crypto subdir into build-system 2024-01-22 17:55:17 -08:00
Kconfig RISC-V: enable building 64-bit kernels with rust support 2024-04-28 14:50:34 -07:00
Kconfig.debug riscv: Add tests for riscv module loading 2023-11-07 14:59:32 -08:00
Kconfig.errata RISC-V Patches for the 6.8 Merge Window, Part 4 2024-01-20 11:06:04 -08:00
Kconfig.socs riscv: dts: Move BUILTIN_DTB_SOURCE to common Kconfig 2024-03-06 00:08:32 +00:00
Makefile RISC-V: enable building 64-bit kernels with rust support 2024-04-28 14:50:34 -07:00
Makefile.postlink kbuild: remove ARCH_POSTLINK from module builds 2023-10-28 21:10:08 +09:00