diff options
| author |   Miguel Ojeda <ojeda@kernel.org> | 2024-04-09 18:25:16 +0100 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@rivosinc.com> | 2024-04-28 14:50:34 -0700 |
| commit | 70a57b247251aabadd67795c3097c0fcc616e533 (patch) | |
| tree | 67d97ccdefffbbf84a4ba3cb750739ac25cba0a5 /arch/riscv/Kconfig | |
| parent | Merge patch series "Rework & improve riscv cmpxchg.h and atomic.h" (diff) | |
| download | linux-stable-70a57b247251aabadd67795c3097c0fcc616e533.tar.xz linux-stable-70a57b247251aabadd67795c3097c0fcc616e533.zip | |
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>
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index be09c8836d56..cad31864fd0f 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -155,6 +155,7 @@ config RISCV select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RETHOOK if !XIP_KERNEL select HAVE_RSEQ + select HAVE_RUST if 64BIT select HAVE_SAMPLE_FTRACE_DIRECT select HAVE_SAMPLE_FTRACE_DIRECT_MULTI select HAVE_STACKPROTECTOR |