From ec85d3cb059f3b899770097b03a9d0c429536a02 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Thu, 10 Aug 2017 13:04:48 +0100
Subject: [PATCH 05/51] arm64: mm: Temporarily disable ARM64_SW_TTBR0_PAN

Git-commit: 376133b7edc20f237a42e4c72415cc9e8c0a9704
Patch-mainline: v4.16-rc1
References: bsc#1068032

We're about to rework the way ASIDs are allocated, switch_mm is
implemented and low-level kernel entry/exit is handled, so keep the
ARM64_SW_TTBR0_PAN code out of the way whilst we do the heavy lifting.

It will be re-enabled in a subsequent patch.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Tested-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b279d8329f7b..78745ca4547d 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -853,6 +853,7 @@ endif
 
 config ARM64_SW_TTBR0_PAN
 	bool "Emulate Privileged Access Never using TTBR0_EL1 switching"
+	depends on BROKEN       # Temporary while switch_mm is reworked
 	help
 	  Enabling this option prevents the kernel from accessing
 	  user-space memory directly by pointing TTBR0_EL1 to a reserved
-- 
2.11.0