mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 04:38:03 +00:00
659df86a7b
The arch_calc_vm_prot_bits() macro uses VM_PKEY_BIT0 etc. which are
not part of the UAPI, so the macro is completely useless for userspace.
It is also hidden behind the CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
config switch which we shouldn't expose to userspace. Thus let's move
this macro into a new internal header instead.
Fixes: 8f62c88322 ("x86/mm/pkeys: Add arch-specific VMA protection bits")
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Link: https://lore.kernel.org/r/20230906162658.142511-1-thuth@redhat.com
16 lines
412 B
C
16 lines
412 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_MMAN_H__
|
|
#define __ASM_MMAN_H__
|
|
|
|
#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
|
|
#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 <uapi/asm/mman.h>
|
|
|
|
#endif /* __ASM_MMAN_H__ */
|