From patchwork Mon Jan 9 06:24:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sia Jee Heng X-Patchwork-Id: 13093072 X-Patchwork-Delegate: palmer@dabbelt.com 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 03D42C54EBD for ; Mon, 9 Jan 2023 06:25:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=yj2XV4v2QaxeFdN6WnPpZQ+dQDsjvR7D+ymcY7xiNOI=; b=IazAiBNTaTM0w/ aM1I/eJAruncX8N4chbeezvO+rTaJDouYyqzrgWSyzqGMC3lMbIz4qZxLTAoEPYOl3Dl0RVNI7+sf KEBX49pkYwPJK0+l73HM6wO8oTwmlDh6Hq/ma8Xj0ReXhZMxebZUgytUuZSV63lSHf7dSwwm72Kla GJel3bIfVuBTMg7MkUzr0vygBtBAnK57le4M1xDz8LUjbN0Vk95j8VldKjouG7imGe5a/0YLAskrn 7B4n4ITPEebhWkPXSxd5vw4P8/Dy9XUn3yR2RyEpDQy+OSNNUFekf5v/Kyy19ueNi0G917YnM2I2d Tbs8DduZTNzzLwljsdVQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pElaW-00HaK6-UP; Mon, 09 Jan 2023 06:24:52 +0000 Received: from ex01.ufhost.com ([61.152.239.75]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pElaS-00HaIS-Qn for linux-riscv@lists.infradead.org; Mon, 09 Jan 2023 06:24:50 +0000 Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 412F924E21B; Mon, 9 Jan 2023 14:24:25 +0800 (CST) Received: from EXMBX066.cuchost.com (172.16.7.66) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 9 Jan 2023 14:24:25 +0800 Received: from jsia-virtual-machine.localdomain (60.49.128.133) by EXMBX066.cuchost.com (172.16.6.66) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 9 Jan 2023 14:24:21 +0800 From: Sia Jee Heng To: , , CC: , , , , Subject: [PATCH v2 2/3] RISC-V: mm: Enable huge page support to kernel_page_present() function Date: Mon, 9 Jan 2023 14:24:06 +0800 Message-ID: <20230109062407.3235-3-jeeheng.sia@starfivetech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230109062407.3235-1-jeeheng.sia@starfivetech.com> References: <20230109062407.3235-1-jeeheng.sia@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [60.49.128.133] X-ClientProxiedBy: EXCAS066.cuchost.com (172.16.6.26) To EXMBX066.cuchost.com (172.16.6.66) X-YovoleRuleAgent: yovoleflag X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230108_222449_046263_972CE311 X-CRM114-Status: UNSURE ( 8.95 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Currently kernel_page_present() function doesn't support huge page detection causes the function to mistakenly return false to the hibernation core. Add huge page detection to the function to solve the problem. Signed-off-by: Sia Jee Heng Reviewed-by: Ley Foon Tan Reviewed-by: Mason Huo --- arch/riscv/mm/pageattr.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c index 86c56616e5de..73fdec8c0a72 100644 --- a/arch/riscv/mm/pageattr.c +++ b/arch/riscv/mm/pageattr.c @@ -221,14 +221,20 @@ bool kernel_page_present(struct page *page) p4d = p4d_offset(pgd, addr); if (!p4d_present(*p4d)) return false; + if (p4d_leaf(*pud)) + return true; pud = pud_offset(p4d, addr); if (!pud_present(*pud)) return false; + if (pud_leaf(*pud)) + return true; pmd = pmd_offset(pud, addr); if (!pmd_present(*pmd)) return false; + if (pmd_leaf(*pmd)) + return true; pte = pte_offset_kernel(pmd, addr); return pte_present(*pte);