From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-mm@kvack.org, akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org,
Anshuman Khandual <anshuman.khandual@arm.com>,
Christoph Hellwig <hch@infradead.org>,
linux-arch@vger.kernel.org, Michal Simek <monstr@monstr.eu>
Subject: [PATCH V2 24/30] microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
Date: Mon, 21 Feb 2022 12:08:33 +0530 [thread overview]
Message-ID: <1645425519-9034-25-git-send-email-anshuman.khandual@arm.com> (raw)
In-Reply-To: <1645425519-9034-1-git-send-email-anshuman.khandual@arm.com>
This defines and exports a platform specific custom vm_get_page_prot() via
subscribing ARCH_HAS_VM_GET_PAGE_PROT. Subsequently all __SXXX and __PXXX
macros can be dropped which are no longer needed.
Cc: Michal Simek <monstr@monstr.eu>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
arch/microblaze/Kconfig | 1 +
arch/microblaze/include/asm/pgtable.h | 17 -----------
arch/microblaze/mm/init.c | 41 +++++++++++++++++++++++++++
3 files changed, 42 insertions(+), 17 deletions(-)
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 59798e43cdb0..f2c25ba8621e 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -7,6 +7,7 @@ config MICROBLAZE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_TABLE_SORT
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index c136a01e467e..6df373077ff2 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -204,23 +204,6 @@ extern pte_t *va_to_pte(unsigned long address);
* We consider execute permission the same as read.
* Also, write permissions imply read permissions.
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_X
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY_X
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_X
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED_X
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED_X
#ifndef __ASSEMBLY__
/*
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 952f35b335b2..68faf7d04faf 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -280,3 +280,44 @@ void * __ref zalloc_maybe_bootmem(size_t size, gfp_t mask)
return p;
}
+
+pgprot_t vm_get_page_prot(unsigned long vm_flags)
+{
+ switch (vm_flags & (VM_READ | VM_WRITE | VM_EXEC | VM_SHARED)) {
+ case VM_NONE:
+ return PAGE_NONE;
+ case VM_READ:
+ return PAGE_READONLY_X;
+ case VM_WRITE:
+ return PAGE_COPY;
+ case VM_WRITE | VM_READ:
+ return PAGE_COPY_X;
+ case VM_EXEC:
+ return PAGE_READONLY;
+ case VM_EXEC | VM_READ:
+ return PAGE_READONLY_X;
+ case VM_EXEC | VM_WRITE:
+ return PAGE_COPY;
+ case VM_EXEC | VM_WRITE | VM_READ:
+ return PAGE_COPY_X;
+ case VM_SHARED:
+ return PAGE_NONE;
+ case VM_SHARED | VM_READ:
+ return PAGE_READONLY_X;
+ case VM_SHARED | VM_WRITE:
+ return PAGE_SHARED;
+ case VM_SHARED | VM_WRITE | VM_READ:
+ return PAGE_SHARED_X;
+ case VM_SHARED | VM_EXEC:
+ return PAGE_READONLY;
+ case VM_SHARED | VM_EXEC | VM_READ:
+ return PAGE_READONLY_X;
+ case VM_SHARED | VM_EXEC | VM_WRITE:
+ return PAGE_SHARED;
+ case VM_SHARED | VM_EXEC | VM_WRITE | VM_READ:
+ return PAGE_SHARED_X;
+ default:
+ BUILD_BUG();
+ }
+}
+EXPORT_SYMBOL(vm_get_page_prot);
--
2.25.1
next prev parent reply other threads:[~2022-02-21 6:41 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-21 6:38 [PATCH V2 00/30] mm/mmap: Drop protection_map[] and platform's __SXXX/__PXXX requirements Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 01/30] mm/debug_vm_pgtable: Drop protection_map[] usage Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 02/30] mm/mmap: Clarify protection_map[] indices Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 03/30] mm/mmap: Add new config ARCH_HAS_VM_GET_PAGE_PROT Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 04/30] powerpc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT Anshuman Khandual
2022-02-21 6:38 ` Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 05/30] arm64/mm: " Anshuman Khandual
2022-02-21 6:38 ` Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 06/30] sparc/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 07/30] mips/mm: " Anshuman Khandual
2022-02-21 9:55 ` Thomas Bogendoerfer
2022-02-21 6:38 ` [PATCH V2 08/30] m68k/mm: " Anshuman Khandual
2022-02-21 11:54 ` Geert Uytterhoeven
2022-02-22 5:44 ` Anshuman Khandual
2022-02-25 9:02 ` Geert Uytterhoeven
2022-02-25 9:35 ` Anshuman Khandual
2022-04-22 6:55 ` kernel test robot
2022-02-21 6:38 ` [PATCH V2 09/30] arm/mm: " Anshuman Khandual
2022-02-21 6:38 ` Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 10/30] x86/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 11/30] mm/mmap: Drop protection_map[] Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 12/30] mm/mmap: Drop arch_filter_pgprot() Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 13/30] mm/mmap: Drop arch_vm_get_page_pgprot() Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 14/30] s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT Anshuman Khandual
2022-02-21 7:09 ` Sven Schnelle
2022-02-23 11:18 ` Alexander Gordeev
2022-02-21 6:38 ` [PATCH V2 15/30] riscv/mm: " Anshuman Khandual
2022-02-21 6:38 ` Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 16/30] alpha/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 17/30] sh/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 18/30] arc/mm: " Anshuman Khandual
2022-02-21 6:38 ` Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 19/30] csky/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 20/30] extensa/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 21/30] parisc/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 22/30] openrisc/mm: " Anshuman Khandual
2022-02-21 6:38 ` [OpenRISC] " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 23/30] um/mm: " Anshuman Khandual
2022-02-21 6:38 ` Anshuman Khandual
2022-02-21 6:38 ` Anshuman Khandual [this message]
2022-02-21 6:38 ` [PATCH V2 25/30] nios2/mm: " Anshuman Khandual
2022-02-22 22:56 ` Dinh Nguyen
2022-02-21 6:38 ` [PATCH V2 26/30] hexagon/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 27/30] nds32/mm: " Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 28/30] ia64/mm: " Anshuman Khandual
2022-02-21 6:50 ` Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 29/30] mm/mmap: Drop generic vm_get_page_prot() Anshuman Khandual
2022-02-21 6:38 ` [PATCH V2 30/30] mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT Anshuman Khandual
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