Re: [PATCH] x86/irqflags: Force a register output in native_save_fl()

[Eric Dumazet]

On Thu, Dec 18, 2025 at 11:15 AM Eric Dumazet <edumazet@xxxxxxxxxx> wrote:
>
> On Thu, Dec 18, 2025 at 11:13 AM H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> >

> >
> > Maybe report a bug to the clang team?
>
> This has been done 8 years ago. No progress so far...
>
> They claim we should use __builtin_ia32_readeflags_u64 /
> __builtin_ia32_writeeflags_u64, which seems unlikely to please x86
> maintainers ?

Although it seems we already use them in tools/testing/selftests/x86/helpers.h