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Date:   Wed,  6 Dec 2017 12:35:21 +0000
From:   Will Deacon <>
Cc:,,,,,,,,,, Will Deacon <>
Subject: [PATCH v3 02/20] arm64: mm: Temporarily disable ARM64_SW_TTBR0_PAN

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 <>
Signed-off-by: Will Deacon <>
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index a93339f5178f..7e7d7fd152c4 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -910,6 +910,7 @@ endif
 config ARM64_SW_TTBR0_PAN
 	bool "Emulate Privileged Access Never using TTBR0_EL1 switching"
+	depends on BROKEN       # Temporary while switch_mm is reworked
 	  Enabling this option prevents the kernel from accessing
 	  user-space memory directly by pointing TTBR0_EL1 to a reserved

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