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Thu, 14 May 2026 02:41:47 -0700 (PDT) Received: from mi-OptiPlex-7060.mioffice.cn ([43.224.245.234]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c82bb114a70sm2351244a12.22.2026.05.14.02.41.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 May 2026 02:41:47 -0700 (PDT) From: Wen Jiang X-Google-Original-From: Wen Jiang To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, will@kernel.org, akpm@linux-foundation.org, urezki@gmail.com Cc: baohua@kernel.org, Xueyuan.chen21@gmail.com, dev.jain@arm.com, rppt@kernel.org, david@kernel.org, ryan.roberts@arm.com, anshuman.khandual@arm.com, ajd@linux.ibm.com, linux-kernel@vger.kernel.org, Wen Jiang , Xueyuan Chen Subject: [PATCH v2 2/7] arm64/vmalloc: Allow arch_vmap_pte_range_map_size to batch multiple CONT_PTE Date: Thu, 14 May 2026 17:41:03 +0800 Message-Id: <20260514094108.2016201-3-jiangwen6@xiaomi.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260514094108.2016201-1-jiangwen6@xiaomi.com> References: <20260514094108.2016201-1-jiangwen6@xiaomi.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260514_024148_784845_61AF9CE7 X-CRM114-Status: GOOD ( 11.45 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Barry Song (Xiaomi)" Allow arch_vmap_pte_range_map_size to batch multiple CONT_PTE hugepages, reducing both PTE setup and TLB flush iterations. Signed-off-by: Barry Song (Xiaomi) Signed-off-by: Wen Jiang Tested-by: Xueyuan Chen --- arch/arm64/include/asm/vmalloc.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/vmalloc.h b/arch/arm64/include/asm/vmalloc.h index 4ec1acd3c..9eea06d0f 100644 --- a/arch/arm64/include/asm/vmalloc.h +++ b/arch/arm64/include/asm/vmalloc.h @@ -23,6 +23,8 @@ static inline unsigned long arch_vmap_pte_range_map_size(unsigned long addr, unsigned long end, u64 pfn, unsigned int max_page_shift) { + unsigned long size; + /* * If the block is at least CONT_PTE_SIZE in size, and is naturally * aligned in both virtual and physical space, then we can pte-map the @@ -40,7 +42,9 @@ static inline unsigned long arch_vmap_pte_range_map_size(unsigned long addr, if (!IS_ALIGNED(PFN_PHYS(pfn), CONT_PTE_SIZE)) return PAGE_SIZE; - return CONT_PTE_SIZE; + size = min3(end - addr, 1UL << max_page_shift, PMD_SIZE >> 1); + size = 1UL << (fls(size) - 1); + return size; } #define arch_vmap_pte_range_unmap_size arch_vmap_pte_range_unmap_size -- 2.34.1