From: Matthew Wilcox <willy@infradead.org>
To: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org, linux-sh@vger.kernel.org,
kvmarm@lists.cs.columbia.edu, linux@armlinux.org.uk,
catalin.marinas@arm.com, will.deacon@arm.com, mpe@ellerman.id.au,
tglx@linutronix.de, mingo@redhat.com,
dave.hansen@linux.intel.com, peterz@infradead.org,
christoffer.dall@arm.com, marc.zyngier@arm.com,
kirill@shutemov.name, rppt@linux.vnet.ibm.com, mhocko@suse.com,
ard.biesheuvel@linaro.org, mark.rutland@arm.com,
steve.capper@arm.com, james.morse@arm.com, robin.murphy@arm.com,
aneesh.kumar@linux.ibm.com, vbabka@suse.cz, shakeelb@google.com,
rientjes@google.com
Subject: Re: [PATCH] mm: Introduce GFP_PGTABLE
Date: Sat, 12 Jan 2019 04:12:31 -0800 [thread overview]
Message-ID: <20190112121230.GQ6310@bombadil.infradead.org> (raw)
In-Reply-To: <1547288798-10243-1-git-send-email-anshuman.khandual@arm.com>
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 ...
next prev parent reply other threads:[~2019-01-12 12:12 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-12 10:26 [PATCH] mm: Introduce GFP_PGTABLE Anshuman Khandual
2019-01-12 12:12 ` Matthew Wilcox [this message]
2019-01-12 12:55 ` Anshuman Khandual
2019-01-12 13:49 ` Christophe Leroy
2019-01-12 15:49 ` Matthew Wilcox
2019-01-12 16:50 ` Shakeel Butt
2019-01-14 4:28 ` Anshuman Khandual
2019-01-12 16:48 ` Shakeel Butt
2019-01-14 4:14 ` Anshuman Khandual
2019-01-13 17:35 ` Michal Hocko
2019-01-14 4:00 ` Anshuman Khandual
2019-01-14 7:01 ` Michal Hocko
2019-01-15 14:11 ` Anshuman Khandual
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