From patchwork Thu Apr 21 08:20:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tong Tiangen X-Patchwork-Id: 12821267 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 2ED4DC433EF for ; Thu, 21 Apr 2022 08:04:01 +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=xrw04nRC7MQRAummoYD2lAArS/tkvcnLYtdqNoksegM=; b=GNjOHF9wB0LuuH fVok+NZh1fVF3bT/zSPIYQvdF6Bq8N0zZWgSLrtOQlxTnd/F+v8d73xJJekHLrcJKLNg7Y++a+Oe+ Dws+NvHImBn3DlMpiuQagvLj/83kwKSD6L2PaRmMXwuWKTTa0ZR8C0O7b/QvixNTt+r7WGElZb4b3 /smmAzQScXuTQEYNjBvaYjx52g0PrNOPpVTDJa+7meO49NNQpN5beZNMCNTYWrlWwKKfepH4FYvZM 6fk84ngR/FxIzvTj32vPf302u3glu+dg8Xgvx7bY6wYGMRXHRtA8HqKdIyI1NY+C3w+a9xvEBTClI dSBNobnGWHZ4RpGe8dzQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhRn7-00CHhS-BQ; Thu, 21 Apr 2022 08:03:53 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhRlR-00CGsv-0w; Thu, 21 Apr 2022 08:02:11 +0000 Received: from kwepemi100003.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4KkVLb0GvNzFqWr; Thu, 21 Apr 2022 15:59:35 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by kwepemi100003.china.huawei.com (7.221.188.122) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 21 Apr 2022 16:02:06 +0800 Received: from localhost.localdomain (10.175.112.125) by kwepemm600017.china.huawei.com (7.193.23.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Thu, 21 Apr 2022 16:02:05 +0800 From: Tong Tiangen To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , , "H. Peter Anvin" , Pasha Tatashin , Anshuman Khandual , Andrew Morton , Catalin Marinas , Will Deacon , Paul Walmsley , Palmer Dabbelt , Albert Ou CC: , , , , Tong Tiangen , Kefeng Wang , Guohanjun Subject: [PATCH -next v5 1/5] mm: page_table_check: using PxD_SIZE instead of PxD_PAGE_SIZE Date: Thu, 21 Apr 2022 08:20:38 +0000 Message-ID: <20220421082042.1167967-2-tongtiangen@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220421082042.1167967-1-tongtiangen@huawei.com> References: <20220421082042.1167967-1-tongtiangen@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220421_010209_433920_C3E010ED X-CRM114-Status: UNSURE ( 9.87 ) 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 Macro PUD_SIZE/PMD_SIZE is more general in various architectures. Using PUD_SIZE/PMD_SIZE instead of PUD_PAGE_SIZE/PMD_PAGE_SIZE can better support page table check in architectures other than x86 and it is no functional impact on x86. Suggested-by: Anshuman Khandual Signed-off-by: Tong Tiangen Acked-by: Pasha Tatashin Signed-off-by: Pasha Tatashin Reviewed-by: Anshuman Khandual --- mm/page_table_check.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/mm/page_table_check.c b/mm/page_table_check.c index 2458281bff89..eb0d0b71cdf6 100644 --- a/mm/page_table_check.c +++ b/mm/page_table_check.c @@ -177,7 +177,7 @@ void __page_table_check_pmd_clear(struct mm_struct *mm, unsigned long addr, if (pmd_user_accessible_page(pmd)) { page_table_check_clear(mm, addr, pmd_pfn(pmd), - PMD_PAGE_SIZE >> PAGE_SHIFT); + PMD_SIZE >> PAGE_SHIFT); } } EXPORT_SYMBOL(__page_table_check_pmd_clear); @@ -190,7 +190,7 @@ void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr, if (pud_user_accessible_page(pud)) { page_table_check_clear(mm, addr, pud_pfn(pud), - PUD_PAGE_SIZE >> PAGE_SHIFT); + PUD_SIZE >> PAGE_SHIFT); } } EXPORT_SYMBOL(__page_table_check_pud_clear); @@ -219,7 +219,7 @@ void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr, __page_table_check_pmd_clear(mm, addr, *pmdp); if (pmd_user_accessible_page(pmd)) { page_table_check_set(mm, addr, pmd_pfn(pmd), - PMD_PAGE_SIZE >> PAGE_SHIFT, + PMD_SIZE >> PAGE_SHIFT, pmd_write(pmd)); } } @@ -234,7 +234,7 @@ void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr, __page_table_check_pud_clear(mm, addr, *pudp); if (pud_user_accessible_page(pud)) { page_table_check_set(mm, addr, pud_pfn(pud), - PUD_PAGE_SIZE >> PAGE_SHIFT, + PUD_SIZE >> PAGE_SHIFT, pud_write(pud)); } }