mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 11:04:44 +08:00
42222eae17
From: Dave Hansen <dave.hansen@linux.intel.com> MPX is being removed from the kernel due to a lack of support in the toolchain going forward (gcc). arch_bprm_mm_init() is used at execve() time. The only non-stub implementation is on x86 for MPX. Remove the hook entirely from all architectures and generic code. Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: x86@kernel.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-arch@vger.kernel.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
32 lines
753 B
C
32 lines
753 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Define generic no-op hooks for arch_dup_mmap, arch_exit_mmap
|
|
* and arch_unmap to be included in asm-FOO/mmu_context.h for any
|
|
* arch FOO which doesn't need to hook these.
|
|
*/
|
|
#ifndef _ASM_GENERIC_MM_HOOKS_H
|
|
#define _ASM_GENERIC_MM_HOOKS_H
|
|
|
|
static inline int arch_dup_mmap(struct mm_struct *oldmm,
|
|
struct mm_struct *mm)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void arch_exit_mmap(struct mm_struct *mm)
|
|
{
|
|
}
|
|
|
|
static inline void arch_unmap(struct mm_struct *mm,
|
|
unsigned long start, unsigned long end)
|
|
{
|
|
}
|
|
|
|
static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
|
|
bool write, bool execute, bool foreign)
|
|
{
|
|
/* by default, allow everything */
|
|
return true;
|
|
}
|
|
#endif /* _ASM_GENERIC_MM_HOOKS_H */
|