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From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
	Arnd Bergmann <arnd@arndb.de>, Mike Rapoport <rppt@kernel.org>,
	Russell King <linux@armlinux.org.uk>,
	linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 15/14] arm: Rename PMD_ORDER to PMD_BITS
Date: Sun,  3 Jul 2022 22:14:41 +0100	[thread overview]
Message-ID: <20220703211441.3981873-1-willy@infradead.org> (raw)
In-Reply-To: <20220703141203.147893-1-rppt@kernel.org>

This is the number of bits used by a PMD entry, not the order of a PMD.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 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 500612d3da2e..d16159ced58f 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_BITS	3
 #else
 #define PG_DIR_SIZE	0x4000
-#define PMD_ORDER	2
+#define PMD_BITS	2
 #endif
 
 	.globl	swapper_pg_dir
@@ -240,7 +240,7 @@ __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_BITS]	@ identity mapping
 	cmp	r5, r6
 	addlo	r5, r5, #1			@ next section
 	blo	1b
@@ -250,7 +250,7 @@ __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_BITS)
 	ldr	r6, =(_end - 1)
 	adr_l	r5, kernel_sec_start		@ _pa(kernel_sec_start)
 #if defined CONFIG_CPU_ENDIAN_BE8 || defined CONFIG_CPU_ENDIAN_BE32
@@ -259,8 +259,8 @@ __create_page_tables:
 	str	r8, [r5]			@ Save physical start of kernel (LE)
 #endif
 	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_BITS)
+1:	str	r3, [r0], #1 << PMD_BITS
 	add	r3, r3, #1 << SECTION_SHIFT
 	cmp	r0, r6
 	bls	1b
@@ -280,14 +280,14 @@ __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_BITS)
+	str	r3, [r0, #((XIP_START & 0x00f00000) >> SECTION_SHIFT) << PMD_BITS]!
 	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_BITS
+	add	r6, r4, r6, lsr #(SECTION_SHIFT - PMD_BITS)
 1:	cmp	r0, r6
 	add	r3, r3, #1 << SECTION_SHIFT
-	strls	r3, [r0], #1 << PMD_ORDER
+	strls	r3, [r0], #1 << PMD_BITS
 	bls	1b
 #endif
 
@@ -297,10 +297,10 @@ __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_BITS)
 	addne	r3, r3, r4
 	orrne	r6, r7, r0, lsl #SECTION_SHIFT
-	strne	r6, [r3], #1 << PMD_ORDER
+	strne	r6, [r3], #1 << PMD_BITS
 	addne	r6, r6, #1 << SECTION_SHIFT
 	strne	r6, [r3]
 
@@ -319,7 +319,7 @@ __create_page_tables:
 	addruart r7, r3, r0
 
 	mov	r3, r3, lsr #SECTION_SHIFT
-	mov	r3, r3, lsl #PMD_ORDER
+	mov	r3, r3, lsl #PMD_BITS
 
 	add	r0, r4, r3
 	mov	r3, r7, lsr #SECTION_SHIFT
@@ -349,7 +349,7 @@ __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_BITS)
 	orr	r3, r7, #0x7c000000
 	str	r3, [r0]
 #endif
@@ -359,10 +359,10 @@ __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_BITS)
 	orr	r3, r7, #0x02000000
 	str	r3, [r0]
-	add	r0, r4, #0xd8000000 >> (SECTION_SHIFT - PMD_ORDER)
+	add	r0, r4, #0xd8000000 >> (SECTION_SHIFT - PMD_BITS)
 	str	r3, [r0]
 #endif
 #endif
-- 
2.35.1



  parent reply	other threads:[~2022-07-03 21:15 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-03 14:11 [PATCH 00/14] arch: make PxD_ORDER generically available Mike Rapoport
2022-07-03 14:11 ` [PATCH 01/14] csky: drop definition of PTE_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 02/14] csky: drop definition of PGD_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 03/14] mips: Rename PMD_ORDER to PMD_TABLE_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 04/14] mips: Rename PUD_ORDER to PUD_TABLE_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 05/14] mips: drop definitions of PTE_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 06/14] mips: Rename PGD_ORDER to PGD_TABLE_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 07/14] nios2: drop definition of PTE_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 08/14] nios2: drop definition of PGD_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 09/14] loongarch: drop definition of PTE_ORDER Mike Rapoport
2022-07-03 14:11 ` [PATCH 10/14] loongarch: drop definition of PMD_ORDER Mike Rapoport
2022-07-03 14:12 ` [PATCH 11/14] loongarch: drop definition of PUD_ORDER Mike Rapoport
2022-07-03 14:12 ` [PATCH 12/14] loongarch: drop definition of PGD_ORDER Mike Rapoport
2022-07-03 20:50   ` Matthew Wilcox
2022-07-04  3:57     ` WANG Xuerui
2022-07-04  6:37       ` Mike Rapoport
2022-07-03 14:12 ` [PATCH 13/14] parisc: Rename PGD_ORDER to PGD_TABLE_ORDER Mike Rapoport
2022-07-03 14:12 ` [PATCH 14/14] xtensa: drop definition of PGD_ORDER Mike Rapoport
2022-07-03 14:27 ` [PATCH 00/14] arch: make PxD_ORDER generically available Helge Deller
2022-07-04  0:40   ` Huacai Chen
2022-07-04  1:45     ` Guo Ren
2022-07-03 21:14 ` Matthew Wilcox (Oracle) [this message]
2022-07-03 21:16   ` [PATCH 15/14] arm: Rename PMD_ORDER to PMD_BITS Russell King (Oracle)
2022-07-03 21:54     ` Matthew Wilcox
2022-07-04  4:32       ` Russell King (Oracle)
2022-07-04  6:26         ` Mike Rapoport
2022-07-04 11:37           ` Russell King (Oracle)
2022-07-04 10:48         ` Matthew Wilcox
2022-07-04 11:32           ` Russell King (Oracle)
2022-07-04 14:28             ` Matthew Wilcox
2022-07-04 17:22               ` Russell King (Oracle)

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