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Thu, 09 Jul 2026 00:38:40 -0700 (PDT) From: Wen Jiang X-Google-Original-From: Wen Jiang To: akpm@linux-foundation.org, catalin.marinas@arm.com, linux-mm@kvack.org, urezki@gmail.com, will@kernel.org Cc: Xueyuan.chen21@gmail.com, ajd@linux.ibm.com, anshuman.khandual@arm.com, david@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, rppt@kernel.org, ryan.roberts@arm.com, dev.jain@arm.com, "Barry Song (Xiaomi)" , Wen Jiang , Xueyuan Chen , Leo Yan Subject: [PATCH v6 1/6] arm64/hugetlb: Extend batching of multiple CONT_PTE in a single PTE setup Date: Thu, 9 Jul 2026 15:38:18 +0800 Message-Id: <20260709073823.6643-2-jiangwen6@xiaomi.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260709073823.6643-1-jiangwen6@xiaomi.com> References: <20260709073823.6643-1-jiangwen6@xiaomi.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 From: "Barry Song (Xiaomi)" For sizes aligned to CONT_PTE_SIZE and smaller than PMD_SIZE, we can handle CONT_PTE_SIZE groups together. Signed-off-by: Barry Song (Xiaomi) Signed-off-by: Wen Jiang Tested-by: Xueyuan Chen Tested-by: Leo Yan Reviewed-by: Dev Jain --- 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..0da746f729388 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)) { + *pgsize = PAGE_SIZE; + contig_ptes = size >> PAGE_SHIFT; + 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