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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-05 08:04:07 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-05 08:04:07 +0200
commitfbc1ec2efe665c07c8c71f9f19edb018f7984107 (patch)
treee7df9dac12c640a83ce8859300e061f1f8913ecd /arch/arm64/mm/proc.S
parent02baff325462cc7e81241b21959c5e62e7ca575e (diff)
parentc6935931c1894ff857616ff8549b61236a19148f (diff)
downloadop-kernel-dev-fbc1ec2efe665c07c8c71f9f19edb018f7984107.zip
op-kernel-dev-fbc1ec2efe665c07c8c71f9f19edb018f7984107.tar.gz
Merge 4.8-rc5 into char-misc-next
We want the fixes in here for merging and testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/mm/proc.S')
-rw-r--r--arch/arm64/mm/proc.S9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index 5bb61de..9d37e96 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -100,7 +100,16 @@ ENTRY(cpu_do_resume)
msr tcr_el1, x8
msr vbar_el1, x9
+
+ /*
+ * __cpu_setup() cleared MDSCR_EL1.MDE and friends, before unmasking
+ * debug exceptions. By restoring MDSCR_EL1 here, we may take a debug
+ * exception. Mask them until local_dbg_restore() in cpu_suspend()
+ * resets them.
+ */
+ disable_dbg
msr mdscr_el1, x10
+
msr sctlr_el1, x12
/*
* Restore oslsr_el1 by writing oslar_el1
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