* [PATCH] sh: noMMU: fix vm_get_page_prot definition
@ 2022-07-06 5:40 Anshuman Khandual
0 siblings, 0 replies; only message in thread
From: Anshuman Khandual @ 2022-07-06 5:40 UTC (permalink / raw
To: linux-next, akpm
Cc: Anshuman Khandual, Yoshinori Sato, Rich Felker, linux-sh,
linux-kernel
Don't define protection_map and don't use DECLARE_VM_GET_PAGE_PROT in
noMMU configs, because in that case the definition for vm_get_page_prot
is provided by the include/linux/mm.h
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: linux-sh@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Fixes: 03a92d45899c ("sh/mm: enable ARCH_HAS_VM_GET_PAGE_PROT")
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
This applies on linux-next (next-20220705).
arch/sh/mm/mmap.c | 40 ++++++++++++++++++++--------------------
1 file changed, 20 insertions(+), 20 deletions(-)
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index 46c1183493af..b82199878b45 100644
--- a/arch/sh/mm/mmap.c
+++ b/arch/sh/mm/mmap.c
@@ -19,6 +19,26 @@ unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */
EXPORT_SYMBOL(shm_align_mask);
#ifdef CONFIG_MMU
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE] = PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
+
/*
* To avoid cache aliases, we map the shared page with same color.
*/
@@ -162,23 +182,3 @@ int valid_mmap_phys_addr_range(unsigned long pfn, size_t size)
{
return 1;
}
-
-static const pgprot_t protection_map[16] = {
- [VM_NONE] = PAGE_NONE,
- [VM_READ] = PAGE_READONLY,
- [VM_WRITE] = PAGE_COPY,
- [VM_WRITE | VM_READ] = PAGE_COPY,
- [VM_EXEC] = PAGE_EXECREAD,
- [VM_EXEC | VM_READ] = PAGE_EXECREAD,
- [VM_EXEC | VM_WRITE] = PAGE_COPY,
- [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
- [VM_SHARED] = PAGE_NONE,
- [VM_SHARED | VM_READ] = PAGE_READONLY,
- [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
- [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED,
- [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
- [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
- [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_RWX,
- [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
-};
-DECLARE_VM_GET_PAGE_PROT
--
2.25.1
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2022-07-06 5:40 [PATCH] sh: noMMU: fix vm_get_page_prot definition Anshuman Khandual
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