[PATCH -V10 10/15] powerpc: Prevent gcc to re-read the pagetables

[David Laight]

>  	ptep = pte_offset_kernel(&pmd, addr);
>  	do {
> -		pte_t pte = *ptep;
> +		pte_t pte = ACCESS_ONCE(*ptep);

Why not just define ptep as a 'pointer to volatile'?

	David