Patch "xtensa: clear all DBREAKC registers on start" has been added to the 4.4-stable tree

Patch "xtensa: clear all DBREAKC registers on start" has been added to the 4.4-stable tree

[gregkh]

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

    xtensa: clear all DBREAKC registers on start

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:
     xtensa-clear-all-dbreakc-registers-on-start.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 7de7ac785ae18a2cdc78d7560f48e3213d9ea0ab Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Thu, 3 Mar 2016 18:34:29 +0300
Subject: xtensa: clear all DBREAKC registers on start

From: Max Filippov <jcmvbkbc@gmail.com>

commit 7de7ac785ae18a2cdc78d7560f48e3213d9ea0ab upstream.

There are XCHAL_NUM_DBREAK registers, clear them all.
This also fixes cryptic assembler error message with binutils 2.25 when
XCHAL_NUM_DBREAK is 0:

  as: out of memory allocating 18446744073709551575 bytes after a total
  of 495616 bytes

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/xtensa/kernel/head.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -128,7 +128,7 @@ ENTRY(_startup)
 	wsr	a0, icountlevel
 
 	.set	_index, 0
-	.rept	XCHAL_NUM_DBREAK - 1
+	.rept	XCHAL_NUM_DBREAK
 	wsr	a0, SREG_DBREAKC + _index
 	.set	_index, _index + 1
 	.endr


Patches currently in stable-queue which might be from jcmvbkbc@gmail.com are

queue-4.4/xtensa-iss-don-t-hang-if-stdin-eof-is-reached.patch
queue-4.4/xtensa-clear-all-dbreakc-registers-on-start.patch
queue-4.4/xtensa-fix-preemption-in-clear-copy-_user_highpage.patch