Re: [PATCH] arm64: Always use REFCOUNT_FULL

[Ard Biesheuvel]

On 20 September 2017 at 13:49, Kees Cook <keescook@xxxxxxxxxxxx> wrote:
> As discussed at the Linux Security Summit, arm64 prefers to use
> REFCOUNT_FULL by default. This enables it for the architecture.
>
> Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> Cc: hw.likun@xxxxxxxxxx
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>

Acked-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>


> ---
>  arch/arm64/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 0df64a6a56d4..9fe7a7f4c94c 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -119,6 +119,7 @@ config ARM64
>         select PCI_ECAM if ACPI
>         select POWER_RESET
>         select POWER_SUPPLY
> +       select REFCOUNT_FULL
>         select SPARSE_IRQ
>         select SYSCTL_EXCEPTION_TRACE
>         select THREAD_INFO_IN_TASK
> --
> 2.7.4
>
>
> --
> Kees Cook
> Pixel Security