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Re: [Xen-devel] [PATCH 04/17] xen/arm64: head: Don't "reserve" x24 for the CPUID



On Mon, 10 Jun 2019, Julien Grall wrote:
> After the recent rework, the CPUID is only used at the very beginning of
> the secondary CPUs boot path. So there is no need to "reserve" x24 for
> he CPUID.

If you are going to resend the series it would probably make sense to
fold it in the previous patch, but it is also OK as is

Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>


> Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
> ---
>  xen/arch/arm/arm64/head.S | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
> index fd432ee15d..84e26582c4 100644
> --- a/xen/arch/arm/arm64/head.S
> +++ b/xen/arch/arm/arm64/head.S
> @@ -69,7 +69,7 @@
>   *  x21 - DTB address (boot cpu only)
>   *  x22 - is_secondary_cpu
>   *  x23 - UART address
> - *  x24 - cpuid
> + *  x24 -
>   *  x25 - identity map in place
>   *  x26 - skip_zero_bss
>   *  x27 -
> -- 
> 2.11.0
> 

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