From patchwork Wed Oct 7 17:00:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 7346691 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5CA3DBEEA4 for ; Wed, 7 Oct 2015 17:04:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7E23520654 for ; Wed, 7 Oct 2015 17:04:22 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9633C206DE for ; Wed, 7 Oct 2015 17:04:21 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zjs5j-0006Fm-Bi; Wed, 07 Oct 2015 17:01:23 +0000 Received: from eu-smtp-delivery-143.mimecast.com ([146.101.78.143]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zjs5T-00061B-LW for linux-arm-kernel@lists.infradead.org; Wed, 07 Oct 2015 17:01:08 +0000 Received: from cam-owa2.Emea.Arm.com (fw-tnat.cambridge.arm.com [217.140.96.140]) by eu-smtp-1.mimecast.com with ESMTP id uk-mta-7-Z4roi6pwSbS6MY79xLURzQ-1; Wed, 07 Oct 2015 18:00:46 +0100 Received: from mammon-v1.localdomain.localdomain ([10.1.2.79]) by cam-owa2.Emea.Arm.com with Microsoft SMTPSVC(6.0.3790.3959); Wed, 7 Oct 2015 18:00:46 +0100 From: Jeremy Linton To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/7] arm64: PTE/PMD contiguous bit definition Date: Wed, 7 Oct 2015 12:00:20 -0500 Message-Id: <1444237225-13802-3-git-send-email-jeremy.linton@arm.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1444237225-13802-1-git-send-email-jeremy.linton@arm.com> References: <1444237225-13802-1-git-send-email-jeremy.linton@arm.com> X-OriginalArrivalTime: 07 Oct 2015 17:00:46.0818 (UTC) FILETIME=[B5EC8420:01D10121] X-MC-Unique: Z4roi6pwSbS6MY79xLURzQ-1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151007_100108_028098_184A8716 X-CRM114-Status: UNSURE ( 7.08 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.2 (-----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: steve.capper@linaro.org, catalin.marinas@arm.com, will.deacon@arm.com, Jeremy Linton , dwoods@ezchip.com, shijie.huang@arm.com, dennis.chen@arm.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Define the bit positions in the PTE and PMD for the contiguous bit. Signed-off-by: Jeremy Linton --- arch/arm64/include/asm/pgtable-hwdef.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 24154b0..95c1ec0 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -55,6 +55,13 @@ #define SECTION_MASK (~(SECTION_SIZE-1)) /* + * Contiguous page definitions. + */ +#define CONT_PTES (_AC(1, UL) << CONT_SHIFT) +/* the the numerical offset of the PTE within a range of CONT_PTES */ +#define CONT_RANGE_OFFSET(addr) (((addr)>>PAGE_SHIFT)&(CONT_PTES-1)) + +/* * Hardware page table definitions. * * Level 1 descriptor (PUD). @@ -83,6 +90,7 @@ #define PMD_SECT_S (_AT(pmdval_t, 3) << 8) #define PMD_SECT_AF (_AT(pmdval_t, 1) << 10) #define PMD_SECT_NG (_AT(pmdval_t, 1) << 11) +#define PMD_SECT_CONT (_AT(pmdval_t, 1) << 52) #define PMD_SECT_PXN (_AT(pmdval_t, 1) << 53) #define PMD_SECT_UXN (_AT(pmdval_t, 1) << 54) @@ -105,6 +113,7 @@ #define PTE_AF (_AT(pteval_t, 1) << 10) /* Access Flag */ #define PTE_NG (_AT(pteval_t, 1) << 11) /* nG */ #define PTE_DBM (_AT(pteval_t, 1) << 51) /* Dirty Bit Management */ +#define PTE_CONT (_AT(pteval_t, 1) << 52) /* Contiguous range */ #define PTE_PXN (_AT(pteval_t, 1) << 53) /* Privileged XN */ #define PTE_UXN (_AT(pteval_t, 1) << 54) /* User XN */