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@xxxxxxxxxxxxxxx> know about it.
>From 4b3e6f2ef3722f1a6a97b6034ed492c1a21fd4ae Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@xxxxxxxxx>
Date: Tue, 31 Jan 2017 18:35:37 -0800
Subject: xtensa: fix noMMU build on cores with MMU
From: Max Filippov <jcmvbkbc@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxx are
queue-4.9/xtensa-fix-nommu-build-on-cores-with-mmu.patch
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