Re: [PATCH] efi: runtime: avoid EFIv2 runtime services on Apple x86 machines

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Hi Ard

> drivers/firmware/efi/efi.c | 7 +++++++
> 1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
> index ae79c3300129..7de3f5b6e8d0 100644
> --- a/drivers/firmware/efi/efi.c
> +++ b/drivers/firmware/efi/efi.c
> @@ -722,6 +722,13 @@ void __init efi_systab_report_header(const efi_table_hdr_t *systab_hdr,
> 		systab_hdr->revision >> 16,
> 		systab_hdr->revision & 0xffff,
> 		vendor);
> +
> +	if (IS_ENABLED(CONFIG_X86_64) &&
> +	    systab_hdr->revision > EFI_1_10_SYSTEM_TABLE_REVISION &&
> +	    !strcmp(vendor, "Apple")) {
> +		pr_info("Apple Mac detected, using EFI v1.10 runtime services only\n");
> +		efi.runtime_version = EFI_1_10_SYSTEM_TABLE_REVISION;
> +	}
> }
> 
> static __initdata char memory_type_name[][13] = {
> -- 
> 2.30.2
> 

Just a friendly reminder to upstream this patch.



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