From patchwork Thu Jul 15 13:46:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 12380193 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8847AC07E96 for ; Thu, 15 Jul 2021 13:48:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6E2AF61279 for ; Thu, 15 Jul 2021 13:48:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237518AbhGONvH (ORCPT ); Thu, 15 Jul 2021 09:51:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229832AbhGONvH (ORCPT ); Thu, 15 Jul 2021 09:51:07 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66F1BC06175F; Thu, 15 Jul 2021 06:48:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=WOLvypKMIjhFPizMST7OeOsTsse8mwCG5b0u88ACeC0=; b=hn4BABqA9+08E5oQGD1ybUF0OQ oEipt+lhZBPhGk0KMO3WiqncwArQJJL6220EYvjN6E4zTmpOR/cjaxGVPyc21zEIMsfc74UZQhO// guEg5Yo8jFvczS5xweMQBHW8V9/37Zn9MvpxTB1HHrUHGYRyF+eMS8sQQfwJEP76QIcN+avETZdT0 JOAdrU9RM4z3O0U3dMjA+F/sYbri/3I+5MqGsi3EYycBPRBjdKRzgS9MUVxcLV1qugBKNtX4WUUzh NvI+3s9lui3Nt9UPfMNTSFXC/nUm/ZoWQ+NUaUxU+wmB81705gNlJ3eM5rkV41aZeSbOaJZoE3zKP z58D/93w==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m41hd-003OeO-PS; Thu, 15 Jul 2021 13:47:12 +0000 From: "Matthew Wilcox (Oracle)" To: linux-arch@vger.kernel.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org Subject: [PATCH 1/3] arm: Rename PMD_ORDER to PMD_TABLE_ORDER Date: Thu, 15 Jul 2021 14:46:10 +0100 Message-Id: <20210715134612.809280-2-willy@infradead.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210715134612.809280-1-willy@infradead.org> References: <20210715134612.809280-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org This is the order of the page table allocation, not the order of a PMD. Signed-off-by: Matthew Wilcox (Oracle) --- arch/arm/kernel/head.S | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 9eb0b4dbcc12..6da39a1d70ba 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -38,10 +38,10 @@ #ifdef CONFIG_ARM_LPAE /* LPAE requires an additional page for the PGD */ #define PG_DIR_SIZE 0x5000 -#define PMD_ORDER 3 +#define PMD_TABLE_ORDER 3 #else #define PG_DIR_SIZE 0x4000 -#define PMD_ORDER 2 +#define PMD_TABLE_ORDER 2 #endif .globl swapper_pg_dir @@ -237,7 +237,7 @@ __create_page_tables: mov r6, r6, lsr #SECTION_SHIFT 1: orr r3, r7, r5, lsl #SECTION_SHIFT @ flags + kernel base - str r3, [r4, r5, lsl #PMD_ORDER] @ identity mapping + str r3, [r4, r5, lsl #PMD_TABLE_ORDER] @ identity mapping cmp r5, r6 addlo r5, r5, #1 @ next section blo 1b @@ -247,13 +247,13 @@ __create_page_tables: * set two variables to indicate the physical start and end of the * kernel. */ - add r0, r4, #KERNEL_OFFSET >> (SECTION_SHIFT - PMD_ORDER) + add r0, r4, #KERNEL_OFFSET >> (SECTION_SHIFT - PMD_TABLE_ORDER) ldr r6, =(_end - 1) adr_l r5, kernel_sec_start @ _pa(kernel_sec_start) str r8, [r5] @ Save physical start of kernel orr r3, r8, r7 @ Add the MMU flags - add r6, r4, r6, lsr #(SECTION_SHIFT - PMD_ORDER) -1: str r3, [r0], #1 << PMD_ORDER + add r6, r4, r6, lsr #(SECTION_SHIFT - PMD_TABLE_ORDER) +1: str r3, [r0], #1 << PMD_TABLE_ORDER add r3, r3, #1 << SECTION_SHIFT cmp r0, r6 bls 1b @@ -269,14 +269,14 @@ __create_page_tables: mov r3, pc mov r3, r3, lsr #SECTION_SHIFT orr r3, r7, r3, lsl #SECTION_SHIFT - add r0, r4, #(XIP_START & 0xff000000) >> (SECTION_SHIFT - PMD_ORDER) - str r3, [r0, #((XIP_START & 0x00f00000) >> SECTION_SHIFT) << PMD_ORDER]! + add r0, r4, #(XIP_START & 0xff000000) >> (SECTION_SHIFT - PMD_TABLE_ORDER) + str r3, [r0, #((XIP_START & 0x00f00000) >> SECTION_SHIFT) << PMD_TABLE_ORDER]! ldr r6, =(_edata_loc - 1) - add r0, r0, #1 << PMD_ORDER - add r6, r4, r6, lsr #(SECTION_SHIFT - PMD_ORDER) + add r0, r0, #1 << PMD_TABLE_ORDER + add r6, r4, r6, lsr #(SECTION_SHIFT - PMD_TABLE_ORDER) 1: cmp r0, r6 add r3, r3, #1 << SECTION_SHIFT - strls r3, [r0], #1 << PMD_ORDER + strls r3, [r0], #1 << PMD_TABLE_ORDER bls 1b #endif @@ -286,10 +286,10 @@ __create_page_tables: */ mov r0, r2, lsr #SECTION_SHIFT cmp r2, #0 - ldrne r3, =FDT_FIXED_BASE >> (SECTION_SHIFT - PMD_ORDER) + ldrne r3, =FDT_FIXED_BASE >> (SECTION_SHIFT - PMD_TABLE_ORDER) addne r3, r3, r4 orrne r6, r7, r0, lsl #SECTION_SHIFT - strne r6, [r3], #1 << PMD_ORDER + strne r6, [r3], #1 << PMD_TABLE_ORDER addne r6, r6, #1 << SECTION_SHIFT strne r6, [r3] @@ -308,7 +308,7 @@ __create_page_tables: addruart r7, r3, r0 mov r3, r3, lsr #SECTION_SHIFT - mov r3, r3, lsl #PMD_ORDER + mov r3, r3, lsl #PMD_TABLE_ORDER add r0, r4, r3 mov r3, r7, lsr #SECTION_SHIFT @@ -338,7 +338,7 @@ __create_page_tables: * If we're using the NetWinder or CATS, we also need to map * in the 16550-type serial port for the debug messages */ - add r0, r4, #0xff000000 >> (SECTION_SHIFT - PMD_ORDER) + add r0, r4, #0xff000000 >> (SECTION_SHIFT - PMD_TABLE_ORDER) orr r3, r7, #0x7c000000 str r3, [r0] #endif @@ -348,10 +348,10 @@ __create_page_tables: * Similar reasons here - for debug. This is * only for Acorn RiscPC architectures. */ - add r0, r4, #0x02000000 >> (SECTION_SHIFT - PMD_ORDER) + add r0, r4, #0x02000000 >> (SECTION_SHIFT - PMD_TABLE_ORDER) orr r3, r7, #0x02000000 str r3, [r0] - add r0, r4, #0xd8000000 >> (SECTION_SHIFT - PMD_ORDER) + add r0, r4, #0xd8000000 >> (SECTION_SHIFT - PMD_TABLE_ORDER) str r3, [r0] #endif #endif