Re: [kvm-unit-tests PATCH v2 2/7] s390x: snippets: c: Cleanup flat.lds

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On Thu, 12 Jan 2023 15:45:43 +0000
Janosch Frank <frankja@xxxxxxxxxxxxx> wrote:

> There are a lot of things in there which we don't need for snippets
> and the alignments can be switched from 64K to 4K since that's the
> s390 page size.
> 
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>

Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>

> ---
>  s390x/snippets/c/flat.lds | 28 +++++++++-------------------
>  1 file changed, 9 insertions(+), 19 deletions(-)
> 
> diff --git a/s390x/snippets/c/flat.lds b/s390x/snippets/c/flat.lds
> index 260ab1c4..9e5eb66b 100644
> --- a/s390x/snippets/c/flat.lds
> +++ b/s390x/snippets/c/flat.lds
> @@ -16,27 +16,22 @@ SECTIONS
>  		 QUAD(0x0000000000004000)
>  	}
>  	. = 0x4000;
> +	/*
> +	 * The stack grows down from 0x4000 to 0x2000, we pre-allocoate
> +	 * a frame via the -160.
> +	 */
>  	stackptr = . - 160;
>  	stacktop = .;
> +	/* Start text 0x4000 */
>  	.text : {
>  		*(.init)
>  		*(.text)
>  		*(.text.*)
>  	}
> -	. = ALIGN(64K);
> +	. = ALIGN(4K);
>  	etext = .;
> -	.opd : { *(.opd) }
> -	. = ALIGN(16);
> -	.dynamic : {
> -		dynamic_start = .;
> -		*(.dynamic)
> -	}
> -	.dynsym : {
> -		dynsym_start = .;
> -		*(.dynsym)
> -	}
> -	.rela.dyn : { *(.rela*) }
> -	. = ALIGN(16);
> +	/* End text */
> +	/* Start data */
>  	.data : {
>  		*(.data)
>  		*(.data.rel*)
> @@ -44,11 +39,6 @@ SECTIONS
>  	. = ALIGN(16);
>  	.rodata : { *(.rodata) *(.rodata.*) }
>  	. = ALIGN(16);
> -	__bss_start = .;
>  	.bss : { *(.bss) }
> -	__bss_end = .;
> -	. = ALIGN(64K);
> -	edata = .;
> -	. += 64K;
> -	. = ALIGN(64K);
> +	/* End data */
>  }




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