mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 21:02:19 +00:00
c3617f7203
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#ifndef _ASM_POWERPC_MMAN_H
|
|
#define _ASM_POWERPC_MMAN_H
|
|
|
|
#include <uapi/asm/mman.h>
|
|
|
|
#ifdef CONFIG_PPC64
|
|
|
|
#include <asm/cputable.h>
|
|
#include <linux/mm.h>
|
|
|
|
/*
|
|
* This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits()
|
|
* here. How important is the optimization?
|
|
*/
|
|
static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot)
|
|
{
|
|
return (prot & PROT_SAO) ? VM_SAO : 0;
|
|
}
|
|
#define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot)
|
|
|
|
static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
|
|
{
|
|
return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
|
|
}
|
|
#define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags)
|
|
|
|
static inline int arch_validate_prot(unsigned long prot)
|
|
{
|
|
if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
|
|
return 0;
|
|
if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
#define arch_validate_prot(prot) arch_validate_prot(prot)
|
|
|
|
#endif /* CONFIG_PPC64 */
|
|
#endif /* _ASM_POWERPC_MMAN_H */
|