Patch "xtensa: fix noMMU build on cores with MMU" has been added to the 4.9-stable tree

[<gregkh@linuxfoundation.org>]

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

    xtensa: fix noMMU build on cores with MMU

to the 4.9-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-fix-nommu-build-on-cores-with-mmu.patch
and it can be found in the queue-4.9 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 4b3e6f2ef3722f1a6a97b6034ed492c1a21fd4ae Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Tue, 31 Jan 2017 18:35:37 -0800
Subject: xtensa: fix noMMU build on cores with MMU

From: Max Filippov <jcmvbkbc@gmail.com>

commit 4b3e6f2ef3722f1a6a97b6034ed492c1a21fd4ae upstream.

Commit bf15f86b343ed8 ("xtensa: initialize MMU before jumping to reset
vector") calls MMU management functions even when CONFIG_MMU is not
selected. That breaks noMMU build on cores with MMU.

Don't manage MMU when CONFIG_MMU is not selected.

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

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

--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -540,7 +540,7 @@ subsys_initcall(topology_init);
 
 void cpu_reset(void)
 {
-#if XCHAL_HAVE_PTP_MMU
+#if XCHAL_HAVE_PTP_MMU && IS_ENABLED(CONFIG_MMU)
 	local_irq_disable();
 	/*
 	 * We have full MMU: all autoload ways, ways 7, 8 and 9 of DTLB must


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

queue-4.9/xtensa-fix-nommu-build-on-cores-with-mmu.patch