On Wed, Aug 05, 2026 at 05:40:42PM +0530, Mukesh Kumar Chaurasiya wrote: > On Tue, Aug 04, 2026 at 01:22:17PM -0700, Nathan Chancellor wrote: > > On Tue, Aug 04, 2026 at 12:11:57PM +0200, Link Mauve wrote: > > > 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: > > > > > 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: > > > > I also see the following warnings (in addition to that error): > > > > warning: unknown and unstable feature specified for `-Ctarget-feature`: > > `mma` > > | > > = note: it is still passed through to the codegen backend, but use of > > this feature might be unsound and the behavior of this feature can change > > in the future > > = help: consider filing a feature request > > > > warning: unstable feature specified for `-Ctarget-feature`: `vsx` > > | > > = note: this feature is not stably supported; its behavior can change > > in the future > > > > warning: unknown and unstable feature specified for `-Ctarget-feature`: > > `hard-float` > > | > > = note: it is still passed through to the codegen backend, but use of > > this feature might be unsound and the behavior of this feature can change > > in the future > > = help: consider filing a feature request > > > > warning: unstable feature specified for `-Ctarget-feature`: `altivec` > > | > > = note: this feature is not stably supported; its behavior can change > > in the future > > > Hey Nathan, > > For these i'll raise issues. Here's bug on rustc for the same. https://github.com/rust-lang/rust/issues/160561
Regards, Mukesh > > clang diag: arch/powerpc/include/uapi/asm/ioctl.h:5:9: warning: > > '_IOC_SIZEBITS' macro redefined [-Wmacro-redefined] > > clang diag: arch/powerpc/include/uapi/asm/ioctl.h:6:9: warning: > > '_IOC_DIRBITS' macro redefined [-Wmacro-redefined] > > clang diag: arch/powerpc/include/uapi/asm/ioctl.h:8:9: warning: > > '_IOC_NONE' macro redefined [-Wmacro-redefined] > > clang diag: arch/powerpc/include/uapi/asm/ioctl.h:10:9: warning: > > '_IOC_WRITE' macro redefined [-Wmacro-redefined] > > warning: 4 warnings emitted > > > For these warnings below diff should fix it. I'll send out a patch soon. > > diff --git a/rust/uapi/uapi_helper.h b/rust/uapi/uapi_helper.h > index 06d7d1a2e8da..acec2d2fede7 100644 > --- a/rust/uapi/uapi_helper.h > +++ b/rust/uapi/uapi_helper.h > @@ -6,7 +6,7 @@ > * Sorted alphabetically. > */ > > -#include <uapi/asm-generic/ioctl.h> > +#include <uapi/linux/ioctl.h> > #include <uapi/drm/drm.h> > #include <uapi/drm/nova_drm.h> > #include <uapi/drm/panthor_drm.h> > > Regards, > Mukesh > > > when building this series in next-20260804 with rustc 1.97.1. I am not > > sure where the clang diagnostic warnings come from. I assume the target > > feature warnings are expected but it would be good to get those > > addressed sooner rather than later. I see '-hard-float' has an issue > > open > > > > https://github.com/rust-lang/rust/issues/117347 > > > > but I don't think I see issues open for the other ones. > > > > -- > > Cheers, > > Nathan
