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mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS 

There are many platforms with exact same value for VM_DATA_DEFAULT_FLAGS
This creates a default value for VM_DATA_DEFAULT_FLAGS in line with the
existing VM_STACK_DEFAULT_FLAGS.  While here, also define some more
macros with standard VMA access flag combinations that are used
frequently across many platforms.  Apart from simplification, this
reduces code duplication as well.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Guo Ren <guoren@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Chris Zankel <chris@zankel.net>
Link: http://lkml.kernel.org/r/1583391014-8170-2-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2020-04-10 14:33:05 -07:00 committed by Linus Torvalds
parent 8cd3984d81
commit c62da0c35d
28 changed files with 31 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/alpha/include/asm/page.h
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@ -90,9 +90,6 @@ typedef struct page *pgtable_t;
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#endif /* CONFIG_DISCONTIGMEM */ #endif /* CONFIG_DISCONTIGMEM */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

2
arch/arc/include/asm/page.h
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@ -102,7 +102,7 @@ typedef pte_t * pgtable_t;
#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr)) #define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
/* Default Permissions for stack/heaps pages (Non Executable) */ /* Default Permissions for stack/heaps pages (Non Executable) */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
#define WANT_PAGE_VIRTUAL 1 #define WANT_PAGE_VIRTUAL 1

4
arch/arm/include/asm/page.h
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@ -161,9 +161,7 @@ extern int pfn_valid(unsigned long);
#endif /* !__ASSEMBLY__ */ #endif /* !__ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

4
arch/arm64/include/asm/page.h
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@ -36,9 +36,7 @@ extern int pfn_valid(unsigned long);
#endif /* !__ASSEMBLY__ */ #endif /* !__ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

5
arch/c6x/include/asm/page.h
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@ -2,10 +2,7 @@
#ifndef _ASM_C6X_PAGE_H #ifndef _ASM_C6X_PAGE_H
#define _ASM_C6X_PAGE_H #define _ASM_C6X_PAGE_H
#define VM_DATA_DEFAULT_FLAGS \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
(VM_READ | VM_WRITE | \
((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/page.h> #include <asm-generic/page.h>

3
arch/csky/include/asm/page.h
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@ -85,9 +85,6 @@ extern unsigned long va_pa_offset;
PHYS_OFFSET_OFFSET) PHYS_OFFSET_OFFSET)
#define virt_to_page(x) (mem_map + MAP_NR(x)) #define virt_to_page(x) (mem_map + MAP_NR(x))
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define pfn_to_kaddr(x) __va(PFN_PHYS(x)) #define pfn_to_kaddr(x) __va(PFN_PHYS(x))
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>

2
arch/h8300/include/asm/page.h
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@ -6,8 +6,6 @@
#include <linux/types.h> #include <linux/types.h>
#define MAP_NR(addr) (((uintptr_t)(addr)-PAGE_OFFSET) >> PAGE_SHIFT) #define MAP_NR(addr) (((uintptr_t)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
extern unsigned long rom_length; extern unsigned long rom_length;

3
arch/hexagon/include/asm/page.h
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@ -93,8 +93,7 @@ struct page;
#define virt_to_page(kaddr) pfn_to_page(PFN_DOWN(__pa(kaddr))) #define virt_to_page(kaddr) pfn_to_page(PFN_DOWN(__pa(kaddr)))
/* Default vm area behavior is non-executable. */ /* Default vm area behavior is non-executable. */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define pfn_valid(pfn) ((pfn) < max_mapnr) #define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

5
arch/ia64/include/asm/page.h
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@ -218,10 +218,7 @@ get_order (unsigned long size)
#define PAGE_OFFSET RGN_BASE(RGN_KERNEL) #define PAGE_OFFSET RGN_BASE(RGN_KERNEL)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \
(((current->personality & READ_IMPLIES_EXEC) != 0) \
? VM_EXEC : 0))
#define GATE_ADDR RGN_BASE(RGN_GATE) #define GATE_ADDR RGN_BASE(RGN_GATE)

3
arch/m68k/include/asm/page.h
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@ -65,9 +65,6 @@ extern unsigned long _ramend;
#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
#define __pfn_to_phys(pfn) PFN_PHYS(pfn) #define __pfn_to_phys(pfn) PFN_PHYS(pfn)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>
#endif /* _M68K_PAGE_H */ #endif /* _M68K_PAGE_H */

2
arch/microblaze/include/asm/page.h
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@ -194,8 +194,6 @@ extern int page_is_ram(unsigned long pfn);
#ifdef CONFIG_MMU #ifdef CONFIG_MMU
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#endif /* CONFIG_MMU */ #endif /* CONFIG_MMU */
#endif /* __KERNEL__ */ #endif /* __KERNEL__ */

5
arch/mips/include/asm/page.h
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@ -253,10 +253,7 @@ extern bool __virt_addr_valid(const volatile void *kaddr);
#define virt_addr_valid(kaddr) \ #define virt_addr_valid(kaddr) \
__virt_addr_valid((const volatile void *) (kaddr)) __virt_addr_valid((const volatile void *) (kaddr))
#define VM_DATA_DEFAULT_FLAGS \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
(VM_READ | VM_WRITE | \
((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

3
arch/nds32/include/asm/page.h
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@ -59,9 +59,6 @@ typedef struct page *pgtable_t;
#endif /* !__ASSEMBLY__ */ #endif /* !__ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#endif /* __KERNEL__ */ #endif /* __KERNEL__ */
#endif #endif

3
arch/nios2/include/asm/page.h
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@ -98,8 +98,7 @@ static inline bool pfn_valid(unsigned long pfn)
# define virt_to_page(vaddr) pfn_to_page(PFN_DOWN(virt_to_phys(vaddr))) # define virt_to_page(vaddr) pfn_to_page(PFN_DOWN(virt_to_phys(vaddr)))
# define virt_addr_valid(vaddr) pfn_valid(PFN_DOWN(virt_to_phys(vaddr))) # define virt_addr_valid(vaddr) pfn_valid(PFN_DOWN(virt_to_phys(vaddr)))
# define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ # define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>

5
arch/openrisc/include/asm/page.h
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@ -86,11 +86,6 @@ typedef struct page *pgtable_t;
#endif /* __ASSEMBLY__ */ #endif /* __ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

3
arch/parisc/include/asm/page.h
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@ -180,9 +180,6 @@ extern int npmem_ranges;
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>
#include <asm/pdc.h> #include <asm/pdc.h>

9
arch/powerpc/include/asm/page.h
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@ -240,13 +240,8 @@ static inline bool pfn_valid(unsigned long pfn)
* and needs to be executable. This means the whole heap ends * and needs to be executable. This means the whole heap ends
* up being executable. * up being executable.
*/ */
#define VM_DATA_DEFAULT_FLAGS32 \ #define VM_DATA_DEFAULT_FLAGS32 VM_DATA_FLAGS_TSK_EXEC
(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \ #define VM_DATA_DEFAULT_FLAGS64 VM_DATA_FLAGS_NON_EXEC
VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#ifdef __powerpc64__ #ifdef __powerpc64__
#include <asm/page_64.h> #include <asm/page_64.h>

7
arch/powerpc/include/asm/page_64.h
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@ -94,11 +94,8 @@ extern u64 ppc64_pft_size;
* stack by default, so in the absence of a PT_GNU_STACK program header * stack by default, so in the absence of a PT_GNU_STACK program header
* we turn execute permission off. * we turn execute permission off.
*/ */
#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ #define VM_STACK_DEFAULT_FLAGS32 VM_DATA_FLAGS_EXEC
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #define VM_STACK_DEFAULT_FLAGS64 VM_DATA_FLAGS_NON_EXEC
#define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define VM_STACK_DEFAULT_FLAGS \ #define VM_STACK_DEFAULT_FLAGS \
(is_32bit_task() ? \ (is_32bit_task() ? \

3
arch/riscv/include/asm/page.h
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@ -137,8 +137,7 @@ extern phys_addr_t __phys_addr_symbol(unsigned long x);
#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr))) #define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

3
arch/s390/include/asm/page.h
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@ -181,8 +181,7 @@ int arch_make_page_accessible(struct page *page);
#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr)) #define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

3
arch/sh/include/asm/page.h
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@ -182,9 +182,6 @@ typedef struct page *pgtable_t;
#endif #endif
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

3
arch/sparc/include/asm/page_32.h
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@ -133,9 +133,6 @@ extern unsigned long pfn_base;
#define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr)) #define pfn_valid(pfn) (((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))
#define virt_addr_valid(kaddr) ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT) < max_mapnr) #define virt_addr_valid(kaddr) ((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT) < max_mapnr)
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>

3
arch/sparc/include/asm/page_64.h
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@ -158,9 +158,6 @@ extern unsigned long PAGE_OFFSET;
#endif /* !(__ASSEMBLY__) */ #endif /* !(__ASSEMBLY__) */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>
#endif /* _SPARC64_PAGE_H */ #endif /* _SPARC64_PAGE_H */

3
arch/unicore32/include/asm/page.h
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@ -69,9 +69,6 @@ extern int pfn_valid(unsigned long);
#endif /* !__ASSEMBLY__ */ #endif /* !__ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS \
(VM_READ | VM_WRITE | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/getorder.h> #include <asm-generic/getorder.h>
#endif #endif

4
arch/x86/include/asm/page_types.h
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@ -35,9 +35,7 @@
#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
#define VM_DATA_DEFAULT_FLAGS \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \ #define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \
CONFIG_PHYSICAL_ALIGN) CONFIG_PHYSICAL_ALIGN)

10
arch/x86/um/asm/vm-flags.h
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@ -9,17 +9,11 @@
#ifdef CONFIG_X86_32 #ifdef CONFIG_X86_32
#define VM_DATA_DEFAULT_FLAGS \ #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC
(VM_READ | VM_WRITE | \
((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#else #else
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ #define VM_STACK_DEFAULT_FLAGS (VM_GROWSDOWN | VM_DATA_FLAGS_EXEC)
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define VM_STACK_DEFAULT_FLAGS (VM_GROWSDOWN | VM_READ | VM_WRITE | \
VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#endif #endif
#endif #endif

3
arch/xtensa/include/asm/page.h
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@ -203,8 +203,5 @@ static inline unsigned long ___pa(unsigned long va)
#endif /* __ASSEMBLY__ */ #endif /* __ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h> #include <asm-generic/memory_model.h>
#endif /* _XTENSA_PAGE_H */ #endif /* _XTENSA_PAGE_H */

14
include/linux/mm.h
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@ -343,6 +343,20 @@ extern unsigned int kobjsize(const void *objp);
/* Bits set in the VMA until the stack is in its final location */ /* Bits set in the VMA until the stack is in its final location */
#define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ) #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ)
#define TASK_EXEC ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0)
/* Common data flag combinations */
#define VM_DATA_FLAGS_TSK_EXEC (VM_READ | VM_WRITE | TASK_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#define VM_DATA_FLAGS_NON_EXEC (VM_READ | VM_WRITE | VM_MAYREAD | \
VM_MAYWRITE | VM_MAYEXEC)
#define VM_DATA_FLAGS_EXEC (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#ifndef VM_DATA_DEFAULT_FLAGS /* arch can override this */
#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_EXEC
#endif
#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */ #ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */
#define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
#endif #endif