[PATCH] rust: arm64: set uwtable llvm module flag for CONFIG_UNWIND_TABLES

Catalin Marinas catalin.marinas at arm.com
Fri May 29 08:15:40 PDT 2026


On Fri, May 29, 2026 at 04:29:26PM +0200, Miguel Ojeda wrote:
> On Fri, May 29, 2026 at 8:32 AM Alice Ryhl <aliceryhl at google.com> wrote:
> > Hrm, is there a way to perform the version check in the Makefile, or do
> > I need a Kconfig for whether the fix is needed?
> 
> We shouldn't need a Kconfig -- we can do e.g.
> 
>   KBUILD_RUSTFLAGS += $(if $(call
> rustc-min-version,109800),,-Zllvm_module_flag=uwtable:u32:2:max)
> 
> I tested with 1.96 and nightly -- I can apply it to the Rust tree if
> arm64 prefers.

Please do.

-- 
Catalin



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