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    Subject[PATCH v2 02/18] arm64: mm: Temporarily disable ARM64_SW_TTBR0_PAN
    Date
    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.

    Signed-off-by: Will Deacon <will.deacon@arm.com>
    ---
    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
    help
    Enabling this option prevents the kernel from accessing
    user-space memory directly by pointing TTBR0_EL1 to a reserved
    --
    2.1.4
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