Commit 376133b7 authored Aug 10, 2017 by Will Deacon

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 <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>

parent e046eb0c

arch/arm64/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -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
		help
		Enabling this option prevents the kernel from accessing
		user-space memory directly by pointing TTBR0_EL1 to a reserved