On Wed, Apr 22, 2026 at 01:23:41PM +0530, Mukesh Kumar Chaurasiya wrote: > On Tue, Apr 21, 2026 at 08:16:06PM +0200, Miguel Ojeda wrote: > > On Tue, Apr 21, 2026 at 7:47 PM Mukesh Kumar Chaurasiya > > <[email protected]> wrote: > > > > > > There are some other build errors apart from this on 1.85. So few months > > > back in the meeting with LLVM team we concluded that for sometime > > > powerpc will be ahead of other archs at 1.95 till others catch up. > > > > In that case you may want to modify `scripts/min-tool-version.sh` in > > this series too. > > > > I hope that helps! > > > Yeah this helps, Thanks :) > > Will post out a new series soon.
Great thanks! For your new series you might want to incorporate the attached patch, which makes the core crate build on PowerPC. > > Regards, > Mukesh > > Cheers, > > Miguel -- Link Mauve
>From 120e1283d1e49d73df483496ffc669328511657c Mon Sep 17 00:00:00 2001 From: Link Mauve <[email protected]> Date: Fri, 10 Apr 2026 13:51:24 +0200 Subject: [PATCH] rust: Make __udivdi3() and __umoddi3() panic MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The core crate currently depends on these two functions for i64/u64/ i128/u128/core::time::Duration formatting, but we shouldn’t use that in the kernel so let’s panic if they are ever called. This doesn’t yet fix drm_panic_qr.rs, which also uses __udivdi3 when CONFIG_CC_OPTIMIZE_FOR_SIZE=y, but at least makes the rest of the kernel build on PPC32. Signed-off-by: Link Mauve <[email protected]> --- rust/Makefile | 4 ++++ rust/compiler_builtins.rs | 6 ++++++ 2 files changed, 10 insertions(+) diff --git a/rust/Makefile b/rust/Makefile index 99537c2c55ee..568f241a21a7 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -626,6 +626,10 @@ ifneq ($(or $(CONFIG_ARM64),$(and $(CONFIG_RISCV),$(CONFIG_64BIT))),) __ashrti3 \ __ashlti3 __lshrti3 endif +ifdef CONFIG_PPC32 + redirect-intrinsics += \ + __udivdi3 __umoddi3 +endif ifdef CONFIG_MODVERSIONS cmd_gendwarfksyms = $(if $(skip_gendwarfksyms),, \ diff --git a/rust/compiler_builtins.rs b/rust/compiler_builtins.rs index dd16c1dc899c..fc6b54636dd5 100644 --- a/rust/compiler_builtins.rs +++ b/rust/compiler_builtins.rs @@ -97,5 +97,11 @@ pub extern "C" fn $ident() { __aeabi_uldivmod, }); +#[cfg(target_arch = "powerpc")] +define_panicking_intrinsics!("`u64` division/modulo should not be used", { + __udivdi3, + __umoddi3, +}); + // NOTE: if you are adding a new intrinsic here, you should also add it to // `redirect-intrinsics` in `rust/Makefile`. -- 2.54.0
