[Intel-xe] [PATCH v2 2/3] UML: define RUNTIME_DISCARD_EXIT

[Mauro Carvalho Chehab]

On Thu, 16 Mar 2023 14:03:40 -0700
Lucas De Marchi <lucas.demarchi at intel.com> wrote:

> From: Masahiro Yamada <masahiroy at kernel.org>
> 
> With CONFIG_VIRTIO_UML=y, GNU ld < 2.36 fails to link UML vmlinux
> (w/wo CONFIG_LD_SCRIPT_STATIC).
> 
>   `.exit.text' referenced in section `.uml.exitcall.exit' of arch/um/drivers/virtio_uml.o: defined in discarded section `.exit.text' of arch/um/drivers/virtio_uml.o
>   collect2: error: ld returned 1 exit status
> 
> This fix is similar to the following commits:
> 
> - 4b9880dbf3bd ("powerpc/vmlinux.lds: Define RUNTIME_DISCARD_EXIT")
> - a494398bde27 ("s390: define RUNTIME_DISCARD_EXIT to fix link error
>   with GNU ld < 2.36")
> - c1c551bebf92 ("sh: define RUNTIME_DISCARD_EXIT")
> 
> Fixes: 99cb0d917ffa ("arch: fix broken BuildID for arm64 and riscv")
> Reported-by: SeongJae Park <sj at kernel.org>
> Signed-off-by: Masahiro Yamada <masahiroy at kernel.org>
> Tested-by: SeongJae Park <sj at kernel.org>
> Signed-off-by: Richard Weinberger <richard at nod.at>
> (cherry picked from commit b99ddbe8336ee680257c8ab479f75051eaa49dcf)

Hacky... Ok, feel free to add my R-B:

Reviewed-by: Mauro Carvalho Chehab <mchehab at kernel.org>

> ---
>  arch/um/kernel/vmlinux.lds.S | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S
> index 16e49bfa2b42..53d719c04ba9 100644
> --- a/arch/um/kernel/vmlinux.lds.S
> +++ b/arch/um/kernel/vmlinux.lds.S
> @@ -1,4 +1,4 @@
> -
> +#define RUNTIME_DISCARD_EXIT
>  KERNEL_STACK_SIZE = 4096 * (1 << CONFIG_KERNEL_STACK_ORDER);
>  
>  #ifdef CONFIG_LD_SCRIPT_STATIC