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: [PATCH 05/11] mm: thp: Correct the HPAGE_PMD_ORDER check.
Date: Fri, 24 May 2013 12:18:42 +0100 [thread overview]
Message-ID: <20130524111842.GI18272@arm.com> (raw)
In-Reply-To: <1369328878-11706-6-git-send-email-steve.capper@linaro.org>
On Thu, May 23, 2013 at 06:07:52PM +0100, Steve Capper wrote:
> All Transparent Huge Pages are allocated by the buddy allocator.
>
> A compile time check is in place that fails when the order of a
> transparent huge page is too large to be allocated by the buddy
> allocator. Unfortunately that compile time check passes when:
> HPAGE_PMD_ORDER == MAX_ORDER
> ( which is incorrect as the buddy allocator can only allocate
> memory of order strictly less than MAX_ORDER. )
>
> This patch updates the compile time check to fail in the above
> case.
>
> Signed-off-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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WARNING: multiple messages have this Message-ID (diff)
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: [PATCH 05/11] mm: thp: Correct the HPAGE_PMD_ORDER check.
Date: Fri, 24 May 2013 12:18:42 +0100 [thread overview]
Message-ID: <20130524111842.GI18272@arm.com> (raw)
Message-ID: <20130524111842.FaNatTncSirMK9pEK7_1FyN1dcExE6bN6Hoef5Hu5Bo@z> (raw)
In-Reply-To: <1369328878-11706-6-git-send-email-steve.capper@linaro.org>
On Thu, May 23, 2013 at 06:07:52PM +0100, Steve Capper wrote:
> All Transparent Huge Pages are allocated by the buddy allocator.
>
> A compile time check is in place that fails when the order of a
> transparent huge page is too large to be allocated by the buddy
> allocator. Unfortunately that compile time check passes when:
> HPAGE_PMD_ORDER == MAX_ORDER
> ( which is incorrect as the buddy allocator can only allocate
> memory of order strictly less than MAX_ORDER. )
>
> This patch updates the compile time check to fail in the above
> case.
>
> Signed-off-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
next prev parent reply other threads:[~2013-05-24 11:18 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 17:07 [PATCH 00/11] HugeTLB and THP support for ARM64 Steve Capper
2013-05-23 17:07 ` Steve Capper
2013-05-23 17:07 ` [PATCH 01/11] mm: hugetlb: Copy huge_pmd_share from x86 to mm Steve Capper
2013-05-23 17:07 ` Steve Capper
2013-05-24 11:11 ` Catalin Marinas
2013-05-24 11:11 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 02/11] x86: mm: Remove x86 version of huge_pmd_share Steve Capper
2013-05-23 17:07 ` Steve Capper
2013-05-24 11:13 ` Catalin Marinas
2013-05-24 11:13 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 03/11] mm: hugetlb: Copy general hugetlb code from x86 to mm Steve Capper
2013-05-23 17:07 ` Steve Capper
2013-05-24 11:14 ` Catalin Marinas
2013-05-24 11:14 ` Catalin Marinas
2013-05-24 11:18 ` Catalin Marinas
2013-05-24 11:18 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 04/11] x86: mm: Remove general hugetlb code from x86 Steve Capper
2013-05-23 17:07 ` Steve Capper
2013-05-24 11:14 ` Catalin Marinas
2013-05-24 11:14 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 05/11] mm: thp: Correct the HPAGE_PMD_ORDER check Steve Capper
2013-05-23 17:07 ` Steve Capper
2013-05-24 11:18 ` Catalin Marinas [this message]
2013-05-24 11:18 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 06/11] ARM64: mm: Restore memblock limit when map_mem finished Steve Capper
2013-05-23 17:07 ` [PATCH 07/11] ARM64: mm: Make PAGE_NONE pages read only and no-execute Steve Capper
2013-05-24 11:21 ` Catalin Marinas
2013-05-24 11:21 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 08/11] ARM64: mm: Swap PTE_FILE and PTE_PROT_NONE bits Steve Capper
2013-05-23 17:07 ` [PATCH 09/11] ARM64: mm: HugeTLB support Steve Capper
2013-05-24 11:23 ` Catalin Marinas
2013-05-24 11:23 ` Catalin Marinas
2013-05-23 17:07 ` [PATCH 10/11] ARM64: mm: Raise MAX_ORDER for 64KB pages and THP Steve Capper
2013-05-23 17:07 ` [PATCH 11/11] ARM64: mm: THP support Steve Capper
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