Re: [Xen-devel] [PATCH v6 1/9] efi: Use early_mem*() instead of early_io*()

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.06.14 at 23:29, <daniel.kiper@xxxxxxxxxx> wrote:
> --- a/drivers/firmware/efi/efi.c
> +++ b/drivers/firmware/efi/efi.c
> @@ -298,7 +298,7 @@ int __init efi_config_init(efi_config_table_type_t 
> *arch_tables)
>                       if (table64 >> 32) {
>                               pr_cont("\n");
>                               pr_err("Table located above 4GB, disabling 
> EFI.\n");
> -                             early_iounmap(config_tables,
> +                             early_memunmap(config_tables,
>                                              efi.systab->nr_tables * sz);
>                               return -EINVAL;
>                       }
> @@ -314,7 +314,7 @@ int __init efi_config_init(efi_config_table_type_t 
> *arch_tables)
>               tablep += sz;
>       }
>       pr_cont("\n");
> -     early_iounmap(config_tables, efi.systab->nr_tables * sz);
> +     early_memunmap(config_tables, efi.systab->nr_tables * sz);
>  
>       set_bit(EFI_CONFIG_TABLES, &efi.flags);
>  

If these two changes are really deemed necessary (there's the
implied assumption currently in place that early_iounmap() can
undo early_memremap() mappings), then ia64 will need a
definition added for early_memunmap() or its build will break.

Jan


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