From patchwork Mon Jul 22 15:41:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Price X-Patchwork-Id: 11052827 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1B551138D for ; Mon, 22 Jul 2019 15:46:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 091D8204FA for ; Mon, 22 Jul 2019 15:46:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F02B827D16; Mon, 22 Jul 2019 15:46:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9D1F7204FA for ; Mon, 22 Jul 2019 15:46:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=sPMVhtmsfBpIRCT4HfNkBSE1xlnR6+1NGEpwO6Ccr9M=; b=HRTf4HY7a89BO2 z0BOv2efYqxPYdbkwFPUV7F7KOHgXvxeZPbPEENTb7O6ACAqXZRGqwBdp5c/DjYXUaP5kPoRH9WQM akRC+yD01LpTzSDk9o/9DcmmyCwqDBcI17ZrdPtUxePXJ66y3hm//p2IRKm7R2407ZEFGArJnhAML UUkwPquJHyNxOnDmo9Hd6Wcy93kuS2V+kJtuBOipWDUIC8xXoM5CS9hdWEP9hwT3PodZsbBQBcgDS MSp2ceU5VQLLdCtI4eFbnc4NcBAgYkpcncxKptBNkfjqIhxVteIbGzZ62hsUyS1Qb4uvsywhOYAEI 7pEwMogrbQaidn1FD/yw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hpaVe-0005Nn-Sn; Mon, 22 Jul 2019 15:45:54 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hpaSb-0001rY-DM for linux-arm-kernel@lists.infradead.org; Mon, 22 Jul 2019 15:42:47 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0BDA01509; Mon, 22 Jul 2019 08:42:45 -0700 (PDT) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.133]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 257E33F694; Mon, 22 Jul 2019 08:42:42 -0700 (PDT) From: Steven Price To: linux-mm@kvack.org Subject: [PATCH v9 07/21] s390: mm: Add p?d_leaf() definitions Date: Mon, 22 Jul 2019 16:41:56 +0100 Message-Id: <20190722154210.42799-8-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190722154210.42799-1-steven.price@arm.com> References: <20190722154210.42799-1-steven.price@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190722_084246_029754_CE70A32D X-CRM114-Status: GOOD ( 11.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Peter Zijlstra , Catalin Marinas , Dave Hansen , Heiko Carstens , "H. Peter Anvin" , Will Deacon , "Liang, Kan" , linux-s390@vger.kernel.org, x86@kernel.org, Steven Price , Ingo Molnar , Arnd Bergmann , =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , Borislav Petkov , Andy Lutomirski , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , linux-kernel@vger.kernel.org, James Morse , Martin Schwidefsky , Andrew Morton Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP walk_page_range() is going to be allowed to walk page tables other than those of user space. For this it needs to know when it has reached a 'leaf' entry in the page tables. This information is provided by the p?d_leaf() functions/macros. For s390, pud_large() and pmd_large() are already implemented as static inline functions. Add a macro to provide the p?d_leaf names for the generic code to use. CC: Martin Schwidefsky CC: Heiko Carstens CC: linux-s390@vger.kernel.org Signed-off-by: Steven Price --- arch/s390/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 9b274fcaacb6..f99a5f546e5e 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -674,6 +674,7 @@ static inline int pud_none(pud_t pud) return pud_val(pud) == _REGION3_ENTRY_EMPTY; } +#define pud_leaf pud_large static inline int pud_large(pud_t pud) { if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) != _REGION_ENTRY_TYPE_R3) @@ -691,6 +692,7 @@ static inline unsigned long pud_pfn(pud_t pud) return (pud_val(pud) & origin_mask) >> PAGE_SHIFT; } +#define pmd_leaf pmd_large static inline int pmd_large(pmd_t pmd) { return (pmd_val(pmd) & _SEGMENT_ENTRY_LARGE) != 0;