On 20 June 2017 at 22:14, Daniel Kiper <daniel.kiper@xxxxxxxxxx> wrote:
> Otherwise e.g. Xen dom0 on x86_64 EFI platforms crashes.
>
> In theory we can check EFI_PARAVIRT too, however,
> EFI_MEMMAP looks more generic and covers more cases.
>
> Signed-off-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> ---
> drivers/firmware/efi/efi.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
> index b372aad..045d6d3 100644
> --- a/drivers/firmware/efi/efi.c
> +++ b/drivers/firmware/efi/efi.c
> @@ -528,7 +528,8 @@ int __init efi_config_parse_tables(void *config_tables, int count, int sz,
> }
> }
>
> - efi_memattr_init();
> + if (efi_enabled(EFI_MEMMAP))
> + efi_memattr_init();
>
> /* Parse the EFI Properties table if it exists */
> if (efi.properties_table != EFI_INVALID_TABLE_ADDR) {
> --
> 1.7.10.4
>