Re: [PATCH V17 0/7] Rust Support for powerpc
From: Link Mauve <hidden>
Date: 2026-08-04 10:12:06
Also in:
lkml, llvm, rust-for-linux
Hi, On Mon, Aug 03, 2026 at 12:27:13PM +0530, Madhavan Srinivasan wrote:
On Wed, 08 Jul 2026 13:54:47 +0530, Mukesh Kumar Chaurasiya (IBM) wrote:quoted
Enable experimental rust support for ppc64le and ppc32be. The patch for ppc32 has been provided by Link Mauve[1] and ppc64le support[2] has been merged over it. ppc32 needs some toolchain fixes mentioned in the patch `rust: Add PowerPC support` and the discussion for that is done here[1]. This has been tested on - powernv9 hardware - pseries P11 hardware - pseries(9, 10) qemu - powernv(9, 10) qemu - rustdoc on x86 and powerpc64le - rusttest on x86 and powerpc64le [...]Applied to powerpc/next. [1/7] rust: Fix "multiple candidates for rmeta dependency core" error https://git.kernel.org/powerpc/c/00cdfd072c709c608606461d7d44d4613119bfa9 [2/7] dma-resv: Fix undefined symbol when CONFIG_DMA_SHARED_BUFFER is disabled https://git.kernel.org/powerpc/c/be809b60cbb61aab96179f44ac3670242ae72996 [3/7] powerpc/jump_label: adjust inline asm to be consistent https://git.kernel.org/powerpc/c/13244c0a40139fe66c4c5c5655f4d732a6002957 [4/7] rust/powerpc: Set min rustc version for powerpc https://git.kernel.org/powerpc/c/e299147cdc8e19c6421a6b7863dc82a35b09d967 [5/7] rust: Make __udivdi3() and __umoddi3() panic https://git.kernel.org/powerpc/c/c93c194e4ee71a734986fd99a8b1ec9fbb7a9b8b [6/7] rust: Add PowerPC support https://git.kernel.org/powerpc/c/73b741adb264967093ef4eb59905618a7e0d0de0 [7/7] powerpc: Enable Rust for ppc64le https://git.kernel.org/powerpc/c/bc87cbdb952e9223616b839d64bdb4723aa2ed1d cheers
I just tested those again in linux-next, with the Wii support series on top, but now the kernel fails to build due to ARCH_WARN_ASM and ARCH_WARN_REACHABLE not being defined on PowerPC:
error: no rules expected `ARCH_WARN_ASM`
--> /home/linkmauve/dev/linux/wii/rust/kernel/generated_arch_warn_asm.rs:1:28
|
1 | ::kernel::concat_literals!(ARCH_WARN_ASM("{file}", "{line}", "{flags}", "{size}"))
| ^^^^^^^^^^^^^ no rules expected this token in macro call
|
::: ../rust/kernel/lib.rs:279:1
|
279 | macro_rules! concat_literals {
| ---------------------------- when calling this macro
|
= note: while trying to match sequence start
error: no rules expected `ARCH_WARN_REACHABLE`
--> /home/linkmauve/dev/linux/wii/rust/kernel/generated_arch_reachable_asm.rs:1:28
|
1 | ::kernel::concat_literals!(ARCH_WARN_REACHABLE)
| ^^^^^^^^^^^^^^^^^^^ no rules expected this token in macro call
|
::: ../rust/kernel/lib.rs:279:1
|
279 | macro_rules! concat_literals {
| ---------------------------- when calling this macro
|
= note: while trying to match sequence start
error: aborting due to 2 previous errors
This is in addition to the bindings::kvfree_call_rcu() call, but that one is already being handled in a different thread. -- Link Mauve