From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 57FD81A239A for ; Wed, 8 Apr 2026 02:51:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775616696; cv=none; b=gSJs3be9LSf0kSFuKkzZSh02OJFhXCzLcrFBA6RMS+WgwFUs+99sMQXkZJ1Xna10PimXt7TFyjOqyN/uUGPpeTScacSEMLg2dNUHEiJ5UKczTGAlaPc65J3GAFl0Q6l6UF2KsAfst8HhmcC5LNnRO4RVWtRf3+Bmu9OdzodmdJk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775616696; c=relaxed/simple; bh=4KmW52ojotdS2xyp5e7cHouikLW+lgqmv208rSJWWic=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Lf9B4Y02RiJdC11U+h1c97iG0FafdpFR3q8l+feHNsi+hEdnk0URRYbAk4SIYmJcCAV30p1mR7zEQt4L2LFfiAm84nj5nMltdr7ykdd4Q4cwVET+xZGURSt6dDGIoytAubRZCYpqMmi2VcSpjH5pK9M8wS6zBqlFziP2ulHJDtA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BzW0ige8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BzW0ige8" 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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)