Re: KEEP Re: [PATCH 2/2] xen: Add CONFIG_GC_SECTIONS

[Jan Beulich <jbeulich@xxxxxxxx>]

On 10.01.2026 00:32, Jason Andryuk wrote:
> (trimmed the CC list down)
> 
> On 2025-12-12 08:22, Jan Beulich wrote:
>> On 12.12.2025 02:34, Jason Andryuk wrote:
>>> The alternative is section groups?  I'm trying that, and it kinda works
>>> sometimes, but .attach_to_group fails when .init.text is involved.
>>>
>>> Here's an example that I think would work, I could make it to
>>> --gc-sectrions:
>>> group section [    3] `.group' [.text.vpmu_do_msr] contains 5 sections:
>>>      [Index]    Name
>>>      [   43]   .text.vpmu_do_msr
>>>      [   44]   .rela.text.vpmu_do_msr
>>>      [   45]   .altinstructions..text.vpmu_do_msr
>>>      [   46]   .rela.altinstructions..text.vpmu_do_msr
>>>      [   47]   .altinstr_replacement..text.vpmu_do_msr
>>>
>>> But I don't make it that far.  Other files blow up with tons of:
>>> {standard input}:9098: Warning: dwarf line number information for
>>> .init.text ignored
>>> and
>>> {standard input}:50083: Error: leb128 operand is an undefined symbol:
>>> .LVU4040
>>>
>>> Line 9098 of apic.s is .loc below:
>>> """
>>>           .section        .init.text
> 
> Earlier in the file, there is
>               .section        .init.text,"ax",@progbits
> but the later .section .init.text entries don't have the extra string.
> 
> tl;dr: If I add "ax",@progbits to all the .init.text entries, the file 
> assembles.
> 
> I opened a bug here: https://sourceware.org/bugzilla/show_bug.cgi?id=33779

And I've replied there. I think gas is working correctly here.

Jan