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Thu, 21 May 2026 22:31:57 -0700 (PDT) Received: from mi-OptiPlex-7060.mioffice.cn ([43.224.245.234]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2beb56d68adsm4782665ad.32.2026.05.21.22.31.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 May 2026 22:31:57 -0700 (PDT) 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, jiangwen6@xiaomi.com Subject: [PATCH v3 1/6] arm64/hugetlb: Extend batching of multiple CONT_PTE in a single PTE setup Date: Fri, 22 May 2026 13:31:41 +0800 Message-Id: <20260522053146.83209-2-jiangwenxiaomi@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260522053146.83209-1-jiangwenxiaomi@gmail.com> References: <20260522053146.83209-1-jiangwenxiaomi@gmail.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-20260521_223200_791035_166736D5 X-CRM114-Status: GOOD ( 10.60 ) 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)" For sizes aligned to CONT_PTE_SIZE and smaller than PMD_SIZE, we can batch CONT_PTE settings instead of handling them individually. Signed-off-by: Barry Song (Xiaomi) Signed-off-by: Wen Jiang Tested-by: Xueyuan Chen --- arch/arm64/mm/hugetlbpage.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c index a42c05cf56408..c4d8b226126cb 100644 --- a/arch/arm64/mm/hugetlbpage.c +++ b/arch/arm64/mm/hugetlbpage.c @@ -110,6 +110,12 @@ static inline int num_contig_ptes(unsigned long size, size_t *pgsize) contig_ptes = CONT_PTES; break; default: + if (size > 0 && size < PMD_SIZE && + IS_ALIGNED(size, CONT_PTE_SIZE)) { + contig_ptes = size >> PAGE_SHIFT; + *pgsize = PAGE_SIZE; + break; + } WARN_ON(!__hugetlb_valid_size(size)); } @@ -359,6 +365,10 @@ pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags) case CONT_PTE_SIZE: return pte_mkcont(entry); default: + if (pagesize > 0 && pagesize < PMD_SIZE && + IS_ALIGNED(pagesize, CONT_PTE_SIZE)) + return pte_mkcont(entry); + break; } pr_warn("%s: unrecognized huge page size 0x%lx\n", -- 2.34.1