[v2,02/15] arm/pgtable: define PFN_PTE_SHIFT

Message ID	20240125193227.444072-3-david@redhat.com (mailing list archive)
State	New
Headers	show Return-Path: <owner-linux-mm@kvack.org> From: David Hildenbrand <david@redhat.com> To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, David Hildenbrand <david@redhat.com>, Andrew Morton <akpm@linux-foundation.org>, Matthew Wilcox <willy@infradead.org>, Ryan Roberts <ryan.roberts@arm.com>, Russell King <linux@armlinux.org.uk>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Dinh Nguyen <dinguyen@kernel.org>, Michael Ellerman <mpe@ellerman.id.au>, Nicholas Piggin <npiggin@gmail.com>, Christophe Leroy <christophe.leroy@csgroup.eu>, "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>, "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Alexander Gordeev <agordeev@linux.ibm.com>, Gerald Schaefer <gerald.schaefer@linux.ibm.com>, Heiko Carstens <hca@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, Sven Schnelle <svens@linux.ibm.com>, "David S. Miller" <davem@davemloft.net>, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org Subject: [PATCH v2 02/15] arm/pgtable: define PFN_PTE_SHIFT Date: Thu, 25 Jan 2024 20:32:14 +0100 Message-ID: <20240125193227.444072-3-david@redhat.com> In-Reply-To: <20240125193227.444072-1-david@redhat.com> References: <20240125193227.444072-1-david@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	mm/memory: optimize fork() with PTE-mapped THP \| expand [v2,00/15] mm/memory: optimize fork() with PTE-mapped THP [v2,01/15] arm64/mm: Make set_ptes() robust when OAs cross 48-bit boundary [v2,02/15] arm/pgtable: define PFN_PTE_SHIFT [v2,03/15] nios2/pgtable: define PFN_PTE_SHIFT [v2,04/15] powerpc/pgtable: define PFN_PTE_SHIFT [v2,05/15] riscv/pgtable: define PFN_PTE_SHIFT [v2,06/15] s390/pgtable: define PFN_PTE_SHIFT [v2,07/15] sparc/pgtable: define PFN_PTE_SHIFT [v2,08/15] mm/pgtable: make pte_next_pfn() independent of set_ptes() [v2,09/15] arm/mm: use pte_next_pfn() in set_ptes() [v2,10/15] powerpc/mm: use pte_next_pfn() in set_ptes() [v2,11/15] mm/memory: factor out copying the actual PTE in copy_present_pte() [v2,12/15] mm/memory: pass PTE to copy_present_pte() [v2,13/15] mm/memory: optimize fork() with PTE-mapped THP [v2,14/15] mm/memory: ignore dirty/accessed/soft-dirty bits in folio_pte_batch() [v2,15/15] mm/memory: ignore writable bit in folio_pte_batch()

Message ID

20240125193227.444072-3-david@redhat.com (mailing list archive)

State

New

Headers

From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org,
	David Hildenbrand <david@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Matthew Wilcox <willy@infradead.org>,
	Ryan Roberts <ryan.roberts@arm.com>,
	Russell King <linux@armlinux.org.uk>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Dinh Nguyen <dinguyen@kernel.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Nicholas Piggin <npiggin@gmail.com>,
	Christophe Leroy <christophe.leroy@csgroup.eu>,
	"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
	"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexander Gordeev <agordeev@linux.ibm.com>,
	Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
	Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@linux.ibm.com>,
	Sven Schnelle <svens@linux.ibm.com>,
	"David S. Miller" <davem@davemloft.net>,
	linux-arm-kernel@lists.infradead.org,
	linuxppc-dev@lists.ozlabs.org,
	linux-riscv@lists.infradead.org,
	linux-s390@vger.kernel.org,
	sparclinux@vger.kernel.org
Subject: [PATCH v2 02/15] arm/pgtable: define PFN_PTE_SHIFT
Date: Thu, 25 Jan 2024 20:32:14 +0100
Message-ID: <20240125193227.444072-3-david@redhat.com>
In-Reply-To: <20240125193227.444072-1-david@redhat.com>
References: <20240125193227.444072-1-david@redhat.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: owner-linux-mm@kvack.org
Precedence: bulk

Series

mm/memory: optimize fork() with PTE-mapped THP | expand

Commit Message

David Hildenbrand Jan. 25, 2024, 7:32 p.m. UTC

We want to make use of pte_next_pfn() outside of set_ptes(). Let's
simply define PFN_PTE_SHIFT, required by pte_next_pfn().

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 arch/arm/include/asm/pgtable.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index d657b84b6bf70..be91e376df79e 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -209,6 +209,8 @@  static inline void __sync_icache_dcache(pte_t pteval)
 extern void __sync_icache_dcache(pte_t pteval);
 #endif
 
+#define PFN_PTE_SHIFT		PAGE_SHIFT
+
 void set_ptes(struct mm_struct *mm, unsigned long addr,
 		      pte_t *ptep, pte_t pteval, unsigned int nr);
 #define set_ptes set_ptes

[v2,02/15] arm/pgtable: define PFN_PTE_SHIFT

Commit Message

Patch