From: Catalin Marinas <catalin.marinas@arm.com>
To: Steve Capper <steve.capper@linaro.org>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"x86@kernel.org" <x86@kernel.org>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Michal Hocko <mhocko@suse.cz>, Ken Chen <kenchen@google.com>,
Mel Gorman <mgorman@suse.de>, Will Deacon <Will.Deacon@arm.com>,
"patches@linaro.org" <patches@linaro.org>
Subject: Re: [RFC PATCH v2 06/11] ARM64: mm: Restore memblock limit when map_mem finished.
Date: Thu, 16 May 2013 14:52:34 +0100 [thread overview]
Message-ID: <20130516135233.GB18308@arm.com> (raw)
In-Reply-To: <1368006763-30774-7-git-send-email-steve.capper@linaro.org>
On Wed, May 08, 2013 at 10:52:38AM +0100, Steve Capper wrote:
> In paging_init the memblock limit is set to restrict any addresses
> returned by early_alloc to fit within the initial direct kernel
> mapping in swapper_pg_dir. This allows map_mem to allocate puds,
> pmds and ptes from the initial direct kernel mapping.
>
> The limit stays low after paging_init() though, meaning any
> bootmem allocations will be from a restricted subset of memory.
> Gigabyte huge pages, for instance, are normally allocated from
> bootmem as their order (18) is too large for the default buddy
> allocator (MAX_ORDER = 11).
>
> This patch restores the memblock limit when map_mem has finished,
> allowing gigabyte huge pages (and other objects) to be allocated
> from all of bootmem.
>
> Signed-off-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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next prev parent reply other threads:[~2013-05-16 13:52 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-08 9:52 [RFC PATCH v2 00/11] HugeTLB and THP support for ARM64 Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 01/11] mm: hugetlb: Copy huge_pmd_share from x86 to mm Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 02/11] x86: mm: Remove x86 version of huge_pmd_share Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 03/11] mm: hugetlb: Copy general hugetlb code from x86 to mm Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 04/11] x86: mm: Remove general hugetlb code from x86 Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 05/11] mm: thp: Correct the HPAGE_PMD_ORDER check Steve Capper
2013-05-08 12:44 ` Kirill A. Shutemov
2013-05-08 12:03 ` Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 06/11] ARM64: mm: Restore memblock limit when map_mem finished Steve Capper
2013-05-16 13:52 ` Catalin Marinas [this message]
2013-05-08 9:52 ` [RFC PATCH v2 07/11] ARM64: mm: Make PAGE_NONE pages read only and no-execute Steve Capper
2013-05-08 16:43 ` Will Deacon
2013-05-09 8:27 ` Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 08/11] ARM64: mm: Swap PTE_FILE and PTE_PROT_NONE bits Steve Capper
2013-05-08 16:17 ` Christopher Covington
2013-05-09 8:15 ` Steve Capper
2013-05-08 16:40 ` Will Deacon
2013-05-09 8:22 ` Steve Capper
2013-05-16 14:58 ` Catalin Marinas
2013-05-08 9:52 ` [RFC PATCH v2 09/11] ARM64: mm: HugeTLB support Steve Capper
2013-05-16 14:32 ` Catalin Marinas
2013-05-17 8:41 ` Steve Capper
2013-05-08 9:52 ` [RFC PATCH v2 10/11] ARM64: mm: Raise MAX_ORDER for 64KB pages and THP Steve Capper
2013-05-16 14:59 ` Catalin Marinas
2013-05-08 9:52 ` [RFC PATCH v2 11/11] ARM64: mm: THP support Steve Capper
2013-05-16 15:01 ` Catalin Marinas
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