Commit 42222eae authored by Dave Hansen's avatar Dave Hansen Committed by Dave Hansen
Browse files

mm: remove arch_bprm_mm_init() hook 



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: default avatarDave Hansen <dave.hansen@linux.intel.com>
parent aa9ccb7b

arch/powerpc/include/asm/mmu_context.h

+0 −5
Original line number Diff line number Diff line
@@ -238,11 +238,6 @@ static inline void arch_unmap(struct mm_struct *mm, 
		mm->context.vdso_base = 0;

}



static inline void arch_bprm_mm_init(struct mm_struct *mm,

				     struct vm_area_struct *vma)

{

}



#ifdef CONFIG_PPC_MEM_KEYS

bool arch_vma_access_permitted(struct vm_area_struct *vma, bool write,

			       bool execute, bool foreign);

arch/um/include/asm/mmu_context.h

+0 −5
Original line number Diff line number Diff line
@@ -25,11 +25,6 @@ static inline void arch_unmap(struct mm_struct *mm, 
			unsigned long start, unsigned long end)

{

}

static inline void arch_bprm_mm_init(struct mm_struct *mm,

				     struct vm_area_struct *vma)

{

}



static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,

		bool write, bool execute, bool foreign)

{

arch/unicore32/include/asm/mmu_context.h

+0 −5
Original line number Diff line number Diff line
@@ -89,11 +89,6 @@ static inline void arch_unmap(struct mm_struct *mm, 
{

}



static inline void arch_bprm_mm_init(struct mm_struct *mm,

				     struct vm_area_struct *vma)

{

}



static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,

		bool write, bool execute, bool foreign)

{

arch/x86/include/asm/mmu_context.h

+0 −6
Original line number Diff line number Diff line
@@ -272,12 +272,6 @@ static inline bool is_64bit_mm(struct mm_struct *mm) 
}

#endif



static inline void arch_bprm_mm_init(struct mm_struct *mm,

		struct vm_area_struct *vma)

{

	mpx_mm_init(mm);

}



static inline void arch_unmap(struct mm_struct *mm, unsigned long start,

			      unsigned long end)

{

fs/exec.c

+0 −1
Original line number Diff line number Diff line
@@ -273,7 +273,6 @@ static int __bprm_mm_init(struct linux_binprm *bprm) 
		goto err;



	mm->stack_vm = mm->total_vm = 1;

	arch_bprm_mm_init(mm, vma);

	up_write(&mm->mmap_sem);

	bprm->p = vma->vm_end - sizeof(void *);

	return 0;

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