Re: [PATCH v6 1/6] ARM: Add TTBR operator for kasan_init

Linus Walleij
2019-07-03T00:28:43Z

Hi Florian!

thanks for your patch!

On Tue, Jun 18, 2019 at 12:11 AM Florian Fainelli <f.fainelli@gmail.com> wrote:

> From: Abbott Liu <liuwenliang@huawei.com>
>
> The purpose of this patch is to provide set_ttbr0/get_ttbr0 to
> kasan_init function. The definitions of cp15 registers should be in
> arch/arm/include/asm/cp15.h rather than arch/arm/include/asm/kvm_hyp.h,
> so move them.
>
> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
> Reported-by: Marc Zyngier <marc.zyngier@arm.com>
> Signed-off-by: Abbott Liu <liuwenliang@huawei.com>
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

> +#include <linux/stringify.h>

What is this for? I think it can be dropped.

This stuff adding a whole bunch of accessors:

> +static inline void set_par(u64 val)
> +{
> + if (IS_ENABLED(CONFIG_ARM_LPAE))
> + write_sysreg(val, PAR_64);
> + else
> + write_sysreg(val, PAR_32);
> +}

Can we put that in a separate patch since it is not
adding any users, so this is a pure refactoring patch for
the current code?

Yours,
Linus Walleij