From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E99D8FF513A for ; Wed, 8 Apr 2026 02:51:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=m8O2Q+OOohPaG3znAvecqv/xmF0EiFxUP+dvhSeqtjI=; b=nDdU02tSEWP9T9RCxUwgYCzqus ZCAOlM94hjK52IkUsEyP3qucxdFTVK7c3vLibue+SZuWVwtfM6q47LkeIb6NR477awUqgHzRQMYoO 7nMlDZdE/4ZI+kqJBgVp634ima1FWfjlXuvj6eAKu3TwgtK3qUU4SbLeNSUlBZ2RGxQFSkuzqmOas 6XUAbaxA2gfQycBU1OEAcfOoDZUH3OHODjM05xPshYhHLwBH2PYBcL/it5S41Oh7LKaQJkKsVSDxA 1V4/XstqNEQ2R5ZwKxebJ/QaBG5FJ7HAKWpEF07uWCiUne8N5x/00vio52rK9ZgglOIAE5wPyYIMB bcW8+oWQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wAJ11-0000000899J-1M5H; Wed, 08 Apr 2026 02:51:39 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wAJ0z-0000000898U-19Zl for linux-arm-kernel@lists.infradead.org; Wed, 08 Apr 2026 02:51:38 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 25E7840B92; Wed, 8 Apr 2026 02:51:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4A765C19421; Wed, 8 Apr 2026 02:51:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775616696; bh=4KmW52ojotdS2xyp5e7cHouikLW+lgqmv208rSJWWic=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BzW0ige8moHKxCsRbPugd62Yndyj4ujFsahw2nRcpTm9uavw9pSg+Cl3QXZMbhbOs CRJ/obpvlt+QtfpvDJqG8erfrQUDxd/jWu23tqqnM6x+1x30CnyupCQeq5j9qD0kxm JCSvjzPRI2QgUgvpr9pYX6THqbL5wDqC0F8YDbumK+wvx3tKpJxUN8VB+WXAk1WGa5 RJuGyF0FkI25BxDdvd7tqG7jgI2YTJ7vwg7NSKi9reKMPaQ8jeRM/iCXcV5rbidTje H40htvvu58zYGzXh1d37lXzt0+aPfGvRwj8LGEX24mIvIpT14Bwm7cRX5l5Wy4tBOb SutlY4vi8RBXQ== From: "Barry Song (Xiaomi)" 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: linux-kernel@vger.kernel.org, anshuman.khandual@arm.com, ryan.roberts@arm.com, ajd@linux.ibm.com, rppt@kernel.org, david@kernel.org, Xueyuan.chen21@gmail.com, "Barry Song (Xiaomi)" Subject: [RFC PATCH 1/8] arm64/hugetlb: Extend batching of multiple CONT_PTE in a single PTE setup Date: Wed, 8 Apr 2026 10:51:08 +0800 Message-Id: <20260408025115.27368-2-baohua@kernel.org> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20260408025115.27368-1-baohua@kernel.org> References: <20260408025115.27368-1-baohua@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260407_195137_334676_CCD2A1C1 X-CRM114-Status: UNSURE ( 8.79 ) X-CRM114-Notice: Please train this message. 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 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) --- 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 a42c05cf5640..bf31c11ebd3b 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 < CONT_PMD_SIZE && size > 0 && + 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 < CONT_PMD_SIZE && pagesize > 0 && + IS_ALIGNED(pagesize, CONT_PTE_SIZE)) + return pte_mkcont(entry); + break; } pr_warn("%s: unrecognized huge page size 0x%lx\n", -- 2.39.3 (Apple Git-146)