The patch titled
Subject: mm/mmap: drop arch_filter_pgprot()
has been added to the -mm tree. Its filename is
mm-mmap-drop-arch_filter_pgprot.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-mmap-drop-arch_filter_pgprot.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-mmap-drop-arch_filter_pgprot.patch
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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: mm/mmap: drop arch_filter_pgprot()
There are no platforms left which subscribe ARCH_HAS_FILTER_PGPROT. Hence
drop generic arch_filter_pgprot() and also config ARCH_HAS_FILTER_PGPROT.
Link: https://lkml.kernel.org/r/20220414062125.609297-7-anshuman.khandual@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Reviewed-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Khalid Aziz <khalid.aziz@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/Kconfig~mm-mmap-drop-arch_filter_pgprot
+++ a/mm/Kconfig
@@ -762,9 +762,6 @@ config ARCH_HAS_CURRENT_STACK_POINTER
register alias named "current_stack_pointer", this config can be
selected.
-config ARCH_HAS_FILTER_PGPROT
- bool
-
config ARCH_HAS_VM_GET_PAGE_PROT
bool
--- a/mm/mmap.c~mm-mmap-drop-arch_filter_pgprot
+++ a/mm/mmap.c
@@ -121,20 +121,11 @@ pgprot_t protection_map[16] __ro_after_i
};
#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
-#ifndef CONFIG_ARCH_HAS_FILTER_PGPROT
-static inline pgprot_t arch_filter_pgprot(pgprot_t prot)
-{
- return prot;
-}
-#endif
-
pgprot_t vm_get_page_prot(unsigned long vm_flags)
{
- pgprot_t ret = __pgprot(pgprot_val(protection_map[vm_flags &
- (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]) |
+ return __pgprot(pgprot_val(protection_map[vm_flags &
+ (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]) |
pgprot_val(arch_vm_get_page_prot(vm_flags)));
-
- return arch_filter_pgprot(ret);
}
EXPORT_SYMBOL(vm_get_page_prot);
#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
_
Patches currently in -mm which might be from anshuman.khandual@xxxxxxx are
mm-debug_vm_pgtable-drop-protection_map-usage.patch
mm-mmap-clarify-protection_map-indices.patch
mm-mmap-add-new-config-arch_has_vm_get_page_prot.patch
powerpc-mm-enable-arch_has_vm_get_page_prot.patch
arm64-mm-enable-arch_has_vm_get_page_prot.patch
sparc-mm-enable-arch_has_vm_get_page_prot.patch
mm-mmap-drop-arch_filter_pgprot.patch
mm-mmap-drop-arch_vm_get_page_pgprot.patch
