On Sat, Jan 12, 2019 at 03:56:38PM +0530, Anshuman Khandual wrote:
> All architectures have been defining their own PGALLOC_GFP as (GFP_KERNEL |
> __GFP_ZERO) and using it for allocating page table pages.
Except that's not true.
> +++ b/arch/x86/mm/pgtable.c
> @@ -13,19 +13,17 @@ phys_addr_t physical_mask __ro_after_init = (1ULL << __PHYSICAL_MASK_SHIFT) - 1;
> EXPORT_SYMBOL(physical_mask);
> #endif
>
> -#define PGALLOC_GFP (GFP_KERNEL_ACCOUNT | __GFP_ZERO)
> -
> #ifdef CONFIG_HIGHPTE
...
> pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
> {
> - return (pte_t *)__get_free_page(PGALLOC_GFP & ~__GFP_ACCOUNT);
> + return (pte_t *)__get_free_page(GFP_PGTABLE & ~__GFP_ACCOUNT);
> }
I think x86 was the only odd one out here, but you'll need to try again ...
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