[fwts PATCH v2 1/1] lib: enable /dev/mem access on aarch64

[Leif Lindholm]

On Thu, Oct 15, 2020 at 18:42:54 +0200, Heinrich Schuchardt wrote:
> The SMBIOS3 table supplied by U-Boot cannot be read without mmap.

In order to access SMBIOS on anything other than pre-UEFI x86 systems,
linux should be built with CONFIG_DMI_SYSFS

/dev/mem is the opposite of what operating systems are for, and
enabling it on any ARM system leads to trivial (and frequently
accidental) denial-of-service attacks from userland.

/
    Leif

> Cc: Leif Lindholm <leif at nuviainc.com>
> Fixes: f36ff824d145 ("lib: disable /dev/mem access on aarch64")
> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
> ---
> v2:
> 	Leif's email address has changed
> ---
>  src/lib/include/fwts.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/src/lib/include/fwts.h b/src/lib/include/fwts.h
> index 6f13d262..a4163055 100644
> --- a/src/lib/include/fwts.h
> +++ b/src/lib/include/fwts.h
> @@ -105,6 +105,7 @@
>  #define FWTS_ARCH_AARCH64	1
>  #define FWTS_HAS_ACPI	1
>  #define FWTS_HAS_UEFI	1
> +#define FWTS_USE_DEVMEM 1
>  #endif
> 
>  #if defined(__s390x__)
> --
> 2.28.0
>