From: Matthew Wilcox <willy@infradead.org>
To: Yu Zhao <yuzhao@google.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Nick Piggin <npiggin@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Joel Fernandes <joel@joelfernandes.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Mark Rutland <mark.rutland@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Chintan Pandya <cpandya@codeaurora.org>,
Jun Yao <yaojun8558363@gmail.com>,
Laura Abbott <labbott@redhat.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH v2 1/3] arm64: mm: use appropriate ctors for page tables
Date: Wed, 20 Feb 2019 13:03:15 -0800 [thread overview]
Message-ID: <20190220210315.GM12668@bombadil.infradead.org> (raw)
In-Reply-To: <20190219053205.GA124985@google.com>
On Mon, Feb 18, 2019 at 10:32:05PM -0700, Yu Zhao wrote:
> pgtable_pmd_page_ctor() must be used on user pmd. For kernel pmd,
> it's okay to use pgtable_page_ctor() instead only because kernel
> doesn't have thp.
I'm not sure that's true. I think you can create THPs in vmalloc
these days. See HAVE_ARCH_HUGE_VMAP which is supported by arm64.
WARNING: multiple messages have this Message-ID (diff)
From: Matthew Wilcox <willy@infradead.org>
To: Yu Zhao <yuzhao@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
linux-arch@vger.kernel.org,
Anshuman Khandual <anshuman.khandual@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, Nick Piggin <npiggin@gmail.com>,
Jun Yao <yaojun8558363@gmail.com>,
linux-mm@kvack.org,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Chintan Pandya <cpandya@codeaurora.org>,
Joel Fernandes <joel@joelfernandes.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Andrew Morton <akpm@linux-foundation.org>,
Laura Abbott <labbott@redhat.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/3] arm64: mm: use appropriate ctors for page tables
Date: Wed, 20 Feb 2019 13:03:15 -0800 [thread overview]
Message-ID: <20190220210315.GM12668@bombadil.infradead.org> (raw)
In-Reply-To: <20190219053205.GA124985@google.com>
On Mon, Feb 18, 2019 at 10:32:05PM -0700, Yu Zhao wrote:
> pgtable_pmd_page_ctor() must be used on user pmd. For kernel pmd,
> it's okay to use pgtable_page_ctor() instead only because kernel
> doesn't have thp.
I'm not sure that's true. I think you can create THPs in vmalloc
these days. See HAVE_ARCH_HUGE_VMAP which is supported by arm64.
WARNING: multiple messages have this Message-ID (diff)
From: Matthew Wilcox <willy@infradead.org>
To: Yu Zhao <yuzhao@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
linux-arch@vger.kernel.org,
Anshuman Khandual <anshuman.khandual@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, Nick Piggin <npiggin@gmail.com>,
Jun Yao <yaojun8558363@gmail.com>,
linux-mm@kvack.org,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Chintan Pandya <cpandya@codeaurora.org>,
Joel Fernandes <joel@joelfernandes.org>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Andrew Morton <akpm@linux-foundation.org>,
Laura Abbott <labbott@redhat.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 1/3] arm64: mm: use appropriate ctors for page tables
Date: Wed, 20 Feb 2019 13:03:15 -0800 [thread overview]
Message-ID: <20190220210315.GM12668@bombadil.infradead.org> (raw)
In-Reply-To: <20190219053205.GA124985@google.com>
On Mon, Feb 18, 2019 at 10:32:05PM -0700, Yu Zhao wrote:
> pgtable_pmd_page_ctor() must be used on user pmd. For kernel pmd,
> it's okay to use pgtable_page_ctor() instead only because kernel
> doesn't have thp.
I'm not sure that's true. I think you can create THPs in vmalloc
these days. See HAVE_ARCH_HUGE_VMAP which is supported by arm64.
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next prev parent reply other threads:[~2019-02-20 21:03 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-14 21:16 [PATCH] arm64: mm: enable per pmd page table lock Yu Zhao
2019-02-14 21:16 ` Yu Zhao
2019-02-18 15:12 ` Will Deacon
2019-02-18 15:12 ` Will Deacon
2019-02-18 19:49 ` Yu Zhao
2019-02-18 19:49 ` Yu Zhao
2019-02-18 20:48 ` Yu Zhao
2019-02-18 20:48 ` Yu Zhao
2019-02-19 4:09 ` Anshuman Khandual
2019-02-19 4:09 ` Anshuman Khandual
2019-02-18 23:13 ` [PATCH v2 1/3] arm64: mm: use appropriate ctors for page tables Yu Zhao
2019-02-18 23:13 ` Yu Zhao
2019-02-18 23:13 ` [PATCH v2 2/3] arm64: mm: don't call page table ctors for init_mm Yu Zhao
2019-02-18 23:13 ` Yu Zhao
2019-02-26 15:13 ` Mark Rutland
2019-02-26 15:13 ` Mark Rutland
2019-03-09 3:52 ` Yu Zhao
2019-03-09 3:52 ` Yu Zhao
2019-02-18 23:13 ` [PATCH v2 3/3] arm64: mm: enable per pmd page table lock Yu Zhao
2019-02-18 23:13 ` Yu Zhao
2019-02-19 4:21 ` [PATCH v2 1/3] arm64: mm: use appropriate ctors for page tables Anshuman Khandual
2019-02-19 4:21 ` Anshuman Khandual
2019-02-19 5:32 ` Yu Zhao
2019-02-19 5:32 ` Yu Zhao
2019-02-19 6:17 ` Anshuman Khandual
2019-02-19 6:17 ` Anshuman Khandual
2019-02-19 22:28 ` Yu Zhao
2019-02-19 22:28 ` Yu Zhao
2019-02-20 10:27 ` Anshuman Khandual
2019-02-20 10:27 ` Anshuman Khandual
2019-02-20 12:24 ` Matthew Wilcox
2019-02-20 12:24 ` Matthew Wilcox
2019-02-20 20:22 ` Yu Zhao
2019-02-20 20:22 ` Yu Zhao
2019-02-20 20:59 ` Matthew Wilcox
2019-02-20 20:59 ` Matthew Wilcox
2019-02-20 20:59 ` Matthew Wilcox
2019-02-20 1:34 ` Matthew Wilcox
2019-02-20 1:34 ` Matthew Wilcox
2019-02-20 1:34 ` Matthew Wilcox
2019-02-20 3:20 ` Anshuman Khandual
2019-02-20 3:20 ` Anshuman Khandual
2019-02-20 21:03 ` Matthew Wilcox [this message]
2019-02-20 21:03 ` Matthew Wilcox
2019-02-20 21:03 ` Matthew Wilcox
2019-02-26 15:12 ` Mark Rutland
2019-02-26 15:12 ` Mark Rutland
2019-03-09 4:01 ` Yu Zhao
2019-03-09 4:01 ` Yu Zhao
2019-03-09 4:01 ` Yu Zhao
2019-03-10 1:19 ` [PATCH v3 " Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` [PATCH v3 2/3] arm64: mm: don't call page table ctors for init_mm Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` [PATCH v3 3/3] arm64: mm: enable per pmd page table lock Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-10 1:19 ` Yu Zhao
2019-03-11 8:28 ` Anshuman Khandual
2019-03-11 8:28 ` Anshuman Khandual
2019-03-11 23:10 ` Yu Zhao
2019-03-11 23:10 ` Yu Zhao
2019-03-11 12:12 ` Mark Rutland
2019-03-11 12:12 ` Mark Rutland
2019-03-11 12:57 ` Anshuman Khandual
2019-03-11 12:57 ` Anshuman Khandual
2019-03-11 23:11 ` Yu Zhao
2019-03-11 23:11 ` Yu Zhao
2019-03-11 23:11 ` Yu Zhao
2019-03-11 7:45 ` [PATCH v3 1/3] arm64: mm: use appropriate ctors for page tables Anshuman Khandual
2019-03-11 7:45 ` Anshuman Khandual
2019-03-11 23:23 ` Yu Zhao
2019-03-11 23:23 ` Yu Zhao
2019-03-12 0:57 ` [PATCH v4 1/4] " Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` [PATCH v4 2/4] arm64: mm: don't call page table ctors for init_mm Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` [PATCH v4 3/4] arm64: mm: call ctor for stage2 pmd page Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 2:19 ` [PATCH] KVM: ARM: Remove pgtable page standard functions from stage-2 page tables Anshuman Khandual
2019-03-12 2:19 ` Anshuman Khandual
2019-03-12 2:40 ` Yu Zhao
2019-03-12 2:40 ` Yu Zhao
2019-03-12 10:37 ` Suzuki K Poulose
2019-03-12 10:37 ` Suzuki K Poulose
2019-03-12 11:31 ` Anshuman Khandual
2019-03-12 11:31 ` Anshuman Khandual
2019-03-12 11:43 ` Suzuki K Poulose
2019-03-12 11:43 ` Suzuki K Poulose
2019-03-12 13:25 ` [PATCH V2] " Anshuman Khandual
2019-03-12 13:25 ` Anshuman Khandual
2019-04-01 16:16 ` Will Deacon
2019-04-01 16:16 ` Will Deacon
2019-04-01 16:16 ` Will Deacon
2019-04-01 18:34 ` Yu Zhao
2019-04-01 18:34 ` Yu Zhao
2019-04-01 18:34 ` Yu Zhao
2019-04-02 9:03 ` Will Deacon
2019-04-02 9:03 ` Will Deacon
2019-04-02 9:03 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 14:22 ` Will Deacon
2019-04-08 17:18 ` Yu Zhao
2019-04-08 17:18 ` Yu Zhao
2019-04-08 17:18 ` Yu Zhao
2019-04-08 9:09 ` Marc Zyngier
2019-04-08 9:09 ` Marc Zyngier
2019-04-08 9:09 ` Marc Zyngier
2019-04-08 9:09 ` Marc Zyngier
2019-03-12 0:57 ` [PATCH v4 4/4] arm64: mm: enable per pmd page table lock Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-03-12 0:57 ` Yu Zhao
2019-02-19 3:08 ` [PATCH] " Anshuman Khandual
2019-02-19 3:08 ` Anshuman Khandual
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