Re: [BUG REPORT] arch/x86/include/asm/uaccess_64.h:119: Error: junk at end of line

[H. Peter Anvin]

On April 17, 2023 11:14:17 AM PDT, Borislav Petkov <bp@xxxxxxxxx> wrote:
>On Sun, Apr 16, 2023 at 10:36:36AM +0200, Willy Tarreau wrote:
>> ...
>> So it just means that the support for the "U" suffix on numbers was
>> added in binutils 2.27 and the "L" suffix on numbers was added somewhere
>> between 2.27 and 2.29.
>
>Thanks for that - I'd like to document this once I've hashed out with
>the toolchain person the proper binutils versions which got this
>support. But that'll come later.
>
>> And given that there's a single occurrence of all this in the whole tree,
>> that's why I'm proposing to just get back to the good old (1 << 0) instead
>> of BIT(0).
>
>Yeah, we have those UC() macro things but they don't work in inline asm
>in C code. So yeah, pls do the thing you're suggesting.
>
>Thx.
>

We do have assembly-aware macros for this; I believe they are called _UL() etc.