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[92.145.124.62]) by smtp.gmail.com with ESMTPSA id b12-20020a5d4d8c000000b0034e65b8b43fsm14038517wru.8.2024.05.08.12.25.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 May 2024 12:25:42 -0700 (PDT) From: Alexandre Ghiti To: Ryan Roberts , Catalin Marinas , Will Deacon , Alexander Potapenko , Marco Elver , Dmitry Vyukov , Paul Walmsley , Palmer Dabbelt , Albert Ou , Ard Biesheuvel , Anup Patel , Atish Patra , Andrey Ryabinin , Andrey Konovalov , Vincenzo Frascino , Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-riscv@lists.infradead.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-mm@kvack.org Cc: Alexandre Ghiti Subject: [PATCH 06/12] mm, riscv, arm64: Use common pte_clear() function Date: Wed, 8 May 2024 21:19:25 +0200 Message-Id: <20240508191931.46060-7-alexghiti@rivosinc.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240508191931.46060-1-alexghiti@rivosinc.com> References: <20240508191931.46060-1-alexghiti@rivosinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Make riscv use the contpte aware pte_clear() function from arm64. Signed-off-by: Alexandre Ghiti --- arch/arm64/include/asm/pgtable.h | 9 +++------ arch/riscv/include/asm/pgtable.h | 4 +++- arch/riscv/mm/init.c | 2 +- mm/contpte.c | 6 ++++++ 4 files changed, 13 insertions(+), 8 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index bb6210fb72c8..74e582f2884f 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -1439,12 +1439,9 @@ extern void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte, unsigned int nr); #define set_ptes set_ptes -static inline void pte_clear(struct mm_struct *mm, - unsigned long addr, pte_t *ptep) -{ - contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep)); - __pte_clear(mm, addr, ptep); -} +extern void pte_clear(struct mm_struct *mm, + unsigned long addr, pte_t *ptep); +#define pte_clear pte_clear #define clear_full_ptes clear_full_ptes static inline void clear_full_ptes(struct mm_struct *mm, unsigned long addr, diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 4f8f673787e7..41534f4b8a6d 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -792,18 +792,20 @@ extern void set_ptes(struct mm_struct *mm, unsigned long addr, #define set_ptes set_ptes extern void set_pte(pte_t *ptep, pte_t pte); #define set_pte set_pte +extern void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); +#define pte_clear pte_clear #else /* CONFIG_THP_CONTPTE */ #define ptep_get __ptep_get #define set_ptes __set_ptes #define set_pte __set_pte +#define pte_clear __pte_clear #endif /* CONFIG_THP_CONTPTE */ #define __HAVE_ARCH_PTEP_GET_AND_CLEAR #define ptep_get_and_clear __ptep_get_and_clear -#define pte_clear __pte_clear #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS #define ptep_set_access_flags __ptep_set_access_flags #define __HAVE_ARCH_PTEP_SET_WRPROTECT diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index bb5c6578204c..c82f17b3060b 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -327,7 +327,7 @@ void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot) if (pgprot_val(prot)) __set_pte(ptep, pfn_pte(phys >> PAGE_SHIFT, prot)); else - pte_clear(&init_mm, addr, ptep); + __pte_clear(&init_mm, addr, ptep); local_flush_tlb_page(addr); } diff --git a/mm/contpte.c b/mm/contpte.c index 543ae5b5a863..c9eff6426ca0 100644 --- a/mm/contpte.c +++ b/mm/contpte.c @@ -45,6 +45,7 @@ * - set_ptes() * - ptep_get_lockless() * - set_pte() + * - pte_clear() */ pte_t huge_ptep_get(pte_t *ptep) @@ -676,4 +677,9 @@ void set_pte(pte_t *ptep, pte_t pte) __set_pte(ptep, pte_mknoncont(pte)); } +void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) +{ + contpte_try_unfold(mm, addr, ptep, __ptep_get(ptep)); + __pte_clear(mm, addr, ptep); +} #endif /* CONFIG_THP_CONTPTE */ -- 2.39.2