• Catalin Marinas's avatar
    arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN · ba42822a
    Catalin Marinas authored
    This patch adds the Kconfig option to enable support for TTBR0 PAN
    emulation. The option is default off because of a slight performance hit
    when enabled, caused by the additional TTBR0_EL1 switching during user
    access operations or exception entry/exit code.
    
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: James Morse <james.morse@arm.com>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Mark Rutland <mark.rutland@arm.com>
    Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
    ba42822a
Kconfig 31.2 KB