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From: Sascha Hauer <s.hauer@pengutronix.de>
To: BAREBOX <barebox@lists.infradead.org>
Subject: [PATCH 3/7] ARM: mmu: move ARCH_MAP_WRITECOMBINE to header
Date: Fri, 13 Jun 2025 09:58:51 +0200	[thread overview]
Message-ID: <20250613-arm-mmu-xn-ro-v1-3-60f05c6e7b4b@pengutronix.de> (raw)
In-Reply-To: <20250613-arm-mmu-xn-ro-v1-0-60f05c6e7b4b@pengutronix.de>

ARCH_MAP_WRITECOMBINE is defined equally for both mmu_32 and mmu_64 and
we'll add more mapping types later, so move it to a header file to be
shared by both mmu implementations.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/cpu/mmu-common.h | 2 ++
 arch/arm/cpu/mmu_32.c     | 1 -
 arch/arm/cpu/mmu_64.c     | 2 --
 3 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm/cpu/mmu-common.h b/arch/arm/cpu/mmu-common.h
index d0b50662570a48fafd47edac9fbc12fe2a62458a..0f11a4b73d1199ec2400f64a2f057cf940d4ff2d 100644
--- a/arch/arm/cpu/mmu-common.h
+++ b/arch/arm/cpu/mmu-common.h
@@ -9,6 +9,8 @@
 #include <linux/kernel.h>
 #include <linux/sizes.h>
 
+#define ARCH_MAP_WRITECOMBINE	((unsigned)-1)
+
 struct device;
 
 void dma_inv_range(void *ptr, size_t size);
diff --git a/arch/arm/cpu/mmu_32.c b/arch/arm/cpu/mmu_32.c
index 2754bea88a514c2886e43ffc4dbf310d75055fca..3e0c761cd43486d3193b80b5f79097bdd5cd333c 100644
--- a/arch/arm/cpu/mmu_32.c
+++ b/arch/arm/cpu/mmu_32.c
@@ -23,7 +23,6 @@
 #include "mmu_32.h"
 
 #define PTRS_PER_PTE		(PGDIR_SIZE / PAGE_SIZE)
-#define ARCH_MAP_WRITECOMBINE	((unsigned)-1)
 
 static inline uint32_t *get_ttb(void)
 {
diff --git a/arch/arm/cpu/mmu_64.c b/arch/arm/cpu/mmu_64.c
index 65c6f1bb9f8ac2f4b55baf46c2af3d3714060088..440258fa767735a4537abd71030a5540813fc443 100644
--- a/arch/arm/cpu/mmu_64.c
+++ b/arch/arm/cpu/mmu_64.c
@@ -24,8 +24,6 @@
 
 #include "mmu_64.h"
 
-#define ARCH_MAP_WRITECOMBINE  ((unsigned)-1)
-
 static uint64_t *get_ttb(void)
 {
 	return (uint64_t *)get_ttbr(current_el());

-- 
2.39.5




  parent reply	other threads:[~2025-06-13  9:09 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-13  7:58 [PATCH 0/7] ARM: Map sections RO/XN Sascha Hauer
2025-06-13  7:58 ` [PATCH 1/7] memory: request RO data section as separate region Sascha Hauer
2025-06-13  9:15   ` Ahmad Fatoum
2025-06-13  7:58 ` [PATCH 2/7] ARM: pass barebox base to mmu_early_enable() Sascha Hauer
2025-06-13  9:17   ` Ahmad Fatoum
2025-06-13  7:58 ` Sascha Hauer [this message]
2025-06-13  9:18   ` [PATCH 3/7] ARM: mmu: move ARCH_MAP_WRITECOMBINE to header Ahmad Fatoum
2025-06-13  7:58 ` [PATCH 4/7] ARM: MMU: map memory for barebox proper pagewise Sascha Hauer
2025-06-13  9:23   ` Ahmad Fatoum
2025-06-13  7:58 ` [PATCH 5/7] ARM: MMU: map text segment ro and data segments execute never Sascha Hauer
2025-06-13 10:12   ` Ahmad Fatoum
2025-06-13 10:36   ` Ahmad Fatoum
2025-06-13  7:58 ` [PATCH 6/7] ARM: MMU64: map memory for barebox proper pagewise Sascha Hauer
2025-06-13 10:29   ` Ahmad Fatoum
2025-06-13  7:58 ` [PATCH 7/7] ARM: MMU64: map text segment ro and data segments execute never Sascha Hauer
2025-06-13 10:40   ` Ahmad Fatoum
2025-06-13 12:44 ` [PATCH 0/7] ARM: Map sections RO/XN Ahmad Fatoum

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