4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Will Deacon <[email protected]> Commit 376133b7edc2 upstream. 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 <[email protected]> Tested-by: Laura Abbott <[email protected]> Tested-by: Shanker Donthineni <[email protected]> Signed-off-by: Will Deacon <[email protected]> Signed-off-by: Ard Biesheuvel <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -882,6 +882,7 @@ 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
