On Fri, Apr 24, 2026, at 07:47, Mukesh Kumar Chaurasiya (IBM) wrote:

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.

It looks like the problem is commit 9af8f2b469c0 ("drm/panic: Add a u64 divide by 10 for arm32") describing this as an arm32 specific issue rather than something common for any 32-bit architecture.

You can probably add a rust version of div_u64() and use that there.

Arnd