On Wed, Apr 08, 2020 at 01:38:36PM +0100, Mark Rutland wrote:

...

+static inline pgprot_t pgprot_nx(pgprot_t prot) +{

• return __pgprot(pgprot_val(prot) | _PAGE_NX);

+} +#define pgprot_nx pgprot_nx

#ifdef CONFIG_X86_PAE

I reckon for arm64 we can do similar in our <asm/pgtable.h>:

#define pgprot_nx(pgprot_t prot) \ __pgprot_modify(prot, 0, PTE_PXN)

... matching the style of our existing pgprot_*() modifier helpers.

I've added that for the next version with attribution to you.