Re: [PATCH] fix printf string specifiers, otherwise kexec doesn't work on my laptop

[Simon Horman <horms@kernel.org>]

On Tue, Aug 05, 2025 at 10:10:10PM +0200, Andy Shevchenko wrote:
> On Tue, Aug 5, 2025 at 3:41 PM Askar Safin <safinaskar@zohomail.com> wrote:
> >  ---- On Tue, 05 Aug 2025 17:00:45 +0400  Andy Shevchenko <andy.shevchenko@gmail.com> wrote ---
> >  > Thanks for your report and the fix! My comments below.
> > Andy, thank you for answer! I will write second version of my patch soon.
> 
> Just to be clear, if you want all changes you listed, it should be a
> patch series and not a single patch.
> 
> > Also, please look at another my report: https://lore.kernel.org/regressions/9eac81e6-b4ee-4210-84ac-cbf7bf811130@kernel.org/ .
> > Mario Limonciello said that we need you specially to proceed.
> 
> Thanks for heads up.
> 
> >  > > 3. uint64_t a; printf ("%w64x", a);
> >  >
> >  > Haven't heard about it. Which C/POSIX/etc standard is this?
> > Introduced in C23. https://www.c-language.org/ .
> > https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3220.pdf , 7.23.6.1
> 
> A-ha, then it's definitely no, even if it compiles with all used
> compilers. Too young a standard to follow.

It is a shame, as IMHO it's the nicest solution.
But I agree that we need to support somewhat older standards.

> 
> >  > > * Laptop Dell Precision 7780
> > Side note: I bought this laptop, because it seems to be the only laptop in the world,
> > which has ECC memory and in the same time doesn't have nvidia.
> 
> Hmm... okay.
> 
> -- 
> With Best Regards,
> Andy Shevchenko
>