diff options
| author | Zhang Yi <yi.z.zhang@linux.intel.com> | 2019-02-08 18:11:00 +0800 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2019-04-25 14:17:36 -0300 |
| commit | 8cf108c5d159bccfa162a06e6abc35cfa4965781 (patch) | |
| tree | 67153f5a19eb66e268fe9c2511060e3e9bbec25b /linux-headers/asm-x86 | |
| parent | 0289881fb6c90bc5ac07585f0a1d60a3a5777d3d (diff) | |
linux-headers: add linux/mman.h.
Update it to 4.20-rc1
Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com>
Message-Id: <f9346f1816b940a4231524a84d57a2cac8466ccc.1549555521.git.yi.z.zhang@linux.intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'linux-headers/asm-x86')
| -rw-r--r-- | linux-headers/asm-x86/mman.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/linux-headers/asm-x86/mman.h b/linux-headers/asm-x86/mman.h new file mode 100644 index 0000000000..d4a8d0424b --- /dev/null +++ b/linux-headers/asm-x86/mman.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _ASM_X86_MMAN_H +#define _ASM_X86_MMAN_H + +#define MAP_32BIT 0x40 /* only give out 32bit addresses */ + +#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS +/* + * Take the 4 protection key bits out of the vma->vm_flags + * value and turn them in to the bits that we can put in + * to a pte. + * + * Only override these if Protection Keys are available + * (which is only on 64-bit). + */ +#define arch_vm_get_page_prot(vm_flags) __pgprot( \ + ((vm_flags) & VM_PKEY_BIT0 ? _PAGE_PKEY_BIT0 : 0) | \ + ((vm_flags) & VM_PKEY_BIT1 ? _PAGE_PKEY_BIT1 : 0) | \ + ((vm_flags) & VM_PKEY_BIT2 ? _PAGE_PKEY_BIT2 : 0) | \ + ((vm_flags) & VM_PKEY_BIT3 ? _PAGE_PKEY_BIT3 : 0)) + +#define arch_calc_vm_prot_bits(prot, key) ( \ + ((key) & 0x1 ? VM_PKEY_BIT0 : 0) | \ + ((key) & 0x2 ? VM_PKEY_BIT1 : 0) | \ + ((key) & 0x4 ? VM_PKEY_BIT2 : 0) | \ + ((key) & 0x8 ? VM_PKEY_BIT3 : 0)) +#endif + +#include <asm-generic/mman.h> + +#endif /* _ASM_X86_MMAN_H */ |