Patch "tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     tile-define-at_vector_size_arch-for-arch_dlinfo.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From cdf8b4633075f2171d440d2e37c9c2609019a81a Mon Sep 17 00:00:00 2001
From: James Hogan <james.hogan@imgtec.com>
Date: Mon, 25 Jul 2016 16:59:54 +0100
Subject: tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

From: James Hogan <james.hogan@imgtec.com>

commit cdf8b4633075f2171d440d2e37c9c2609019a81a upstream.

AT_VECTOR_SIZE_ARCH should be defined with the maximum number of
NEW_AUX_ENT entries that ARCH_DLINFO can contain, but it wasn't defined
for tile at all even though ARCH_DLINFO will contain one NEW_AUX_ENT for
the VDSO address.

This shouldn't be a problem as AT_VECTOR_SIZE_BASE includes space for
AT_BASE_PLATFORM which tile doesn't use, but lets define it now and add
the comment above ARCH_DLINFO as found in several other architectures to
remind future modifiers of ARCH_DLINFO to keep AT_VECTOR_SIZE_ARCH up to
date.

Fixes: 4a556f4f56da ("tile: implement gettimeofday() via vDSO")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/tile/include/asm/elf.h         |    1 +
 arch/tile/include/uapi/asm/auxvec.h |    2 ++
 2 files changed, 3 insertions(+)

--- a/arch/tile/include/asm/elf.h
+++ b/arch/tile/include/asm/elf.h
@@ -129,6 +129,7 @@ extern int dump_task_regs(struct task_st
 struct linux_binprm;
 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
 				       int executable_stack);
+/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
 #define ARCH_DLINFO \
 do { \
 	NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_BASE); \
--- a/arch/tile/include/uapi/asm/auxvec.h
+++ b/arch/tile/include/uapi/asm/auxvec.h
@@ -18,4 +18,6 @@
 /* The vDSO location. */
 #define AT_SYSINFO_EHDR         33
 
+#define AT_VECTOR_SIZE_ARCH 1 /* entries in ARCH_DLINFO */
+
 #endif /* _ASM_TILE_AUXVEC_H */


Patches currently in stable-queue which might be from james.hogan@imgtec.com are

queue-4.4/tile-define-at_vector_size_arch-for-arch_dlinfo.patch