On 02/21/2018 05:55 PM, Ram Pai wrote:
> #define PAGE_SIZE (0x1UL << 16)
> -static inline int cpu_has_pku(void)
> +static inline bool is_pkey_supported(void)
> {
> - return 1;
> + /*
> + * No simple way to determine this.
> + * lets try allocating a key and see if it succeeds.
>
pkey subsystem is supported if the hardware and kernel has support.
We determine that by checking if allocation of a key succeeds or not.
cc: Dave Hansen
cc: Florian Weimer
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 22 --
tools/testing/self
