Message ID | 20240129124649.189745-6-david@redhat.com |
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State | New |
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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, Alexandre Ghiti <alexghiti@rivosinc.com> Subject: [PATCH v3 05/15] riscv/pgtable: define PFN_PTE_SHIFT Date: Mon, 29 Jan 2024 13:46:39 +0100 Message-ID: <20240129124649.189745-6-david@redhat.com> In-Reply-To: <20240129124649.189745-1-david@redhat.com> References: <20240129124649.189745-1-david@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: <linux-kernel.vger.kernel.org> List-Subscribe: <mailto:linux-kernel+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-kernel+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789429234411515464 X-GMAIL-MSGID: 1789429234411515464 |
Series |
mm/memory: optimize fork() with PTE-mapped THP
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Commit Message
David Hildenbrand
Jan. 29, 2024, 12:46 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(). Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: David Hildenbrand <david@redhat.com> --- arch/riscv/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+)
Comments
On Mon, Jan 29, 2024 at 01:46:39PM +0100, David Hildenbrand wrote: > 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(). > > Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> > Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org> > --- > arch/riscv/include/asm/pgtable.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h > index 0c94260b5d0c..add5cd30ab34 100644 > --- a/arch/riscv/include/asm/pgtable.h > +++ b/arch/riscv/include/asm/pgtable.h > @@ -523,6 +523,8 @@ static inline void __set_pte_at(pte_t *ptep, pte_t pteval) > set_pte(ptep, pteval); > } > > +#define PFN_PTE_SHIFT _PAGE_PFN_SHIFT > + > static inline void set_ptes(struct mm_struct *mm, unsigned long addr, > pte_t *ptep, pte_t pteval, unsigned int nr) > { > -- > 2.43.0 > >
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 0c94260b5d0c..add5cd30ab34 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -523,6 +523,8 @@ static inline void __set_pte_at(pte_t *ptep, pte_t pteval) set_pte(ptep, pteval); } +#define PFN_PTE_SHIFT _PAGE_PFN_SHIFT + static inline void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pteval, unsigned int nr) {