[PATCH] um, pkeys: give UML an arch_vma_access_permitted()

[PATCH] um, pkeys: give UML an arch_vma_access_permitted()

[Dave Hansen]

From: Dave Hansen <dave.hansen@linux.intel.com>

UML has a special mmu_context.h and needs updates whenever the generic one
is updated.  The original pkeys patches missed this.  This fixes it up.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
---

 b/arch/um/include/asm/mmu_context.h |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff -puN arch/um/include/asm/mmu_context.h~pkeys-fix-um-arch_vma_access_permitted arch/um/include/asm/mmu_context.h
--- a/arch/um/include/asm/mmu_context.h~pkeys-fix-um-arch_vma_access_permitted	2016-02-18 10:19:17.675287570 -0800
+++ b/arch/um/include/asm/mmu_context.h	2016-02-18 10:20:09.214627363 -0800
@@ -27,6 +27,20 @@ static inline void arch_bprm_mm_init(str
 				     struct vm_area_struct *vma)
 {
 }
+
+static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
+		bool write, bool execute, bool foreign)
+{
+	/* by default, allow everything */
+	return true;
+}
+
+static inline bool arch_pte_access_permitted(pte_t pte, bool write)
+{
+	/* by default, allow everything */
+	return true;
+}
+
 /*
  * end asm-generic/mm_hooks.h functions
  */
_

[tip:mm/pkeys] um, pkeys: Add UML arch_*_access_permitted() methods

[tip-bot for Dave Hansen]

Commit-ID:  9d95b1759e0504890049deb2de62e31d7c241c30
Gitweb:     http://git.kernel.org/tip/9d95b1759e0504890049deb2de62e31d7c241c30
Author:     Dave Hansen <dave.hansen@linux.intel.com>
AuthorDate: Thu, 18 Feb 2016 10:35:57 -0800
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Thu, 18 Feb 2016 19:46:28 +0100

um, pkeys: Add UML arch_*_access_permitted() methods

UML has a special mmu_context.h and needs updates whenever the generic one
is updated.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: user-mode-linux-user@lists.sourceforge.net
Link: http://lkml.kernel.org/r/20160218183557.AE1DB383@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/um/include/asm/mmu_context.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
index 941527e..1a60e13 100644
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -27,6 +27,20 @@ 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)
+{
+	/* by default, allow everything */
+	return true;
+}
+
+static inline bool arch_pte_access_permitted(pte_t pte, bool write)
+{
+	/* by default, allow everything */
+	return true;
+}
+
 /*
  * end asm-generic/mm_hooks.h functions
  */