Suzuki K Poulose 13f417f3b8 arm64: Ensure the secondary CPUs have safe ASIDBits size ... Adds a hook for checking whether a secondary CPU has the features used already by the kernel during early boot, based on the boot CPU and plugs in the check for ASID size. The ID_AA64MMFR0_EL1:ASIDBits determines the size of the mm context id and is used in the early boot to make decisions. The value is picked up from the Boot CPU and cannot be delayed until other CPUs are up. If a secondary CPU has a smaller size than that of the Boot CPU, things will break horribly and the usual SANITY check is not good enough to prevent the system from crashing. So, crash the system with enough information. Cc: Mark Rutland <mark.rutland@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2016-02-25 10:33:06 +00:00
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asm	arm64: Ensure the secondary CPUs have safe ASIDBits size	2016-02-25 10:33:06 +00:00
uapi/asm	arm64: kernel: Add support for User Access Override	2016-02-18 17:27:04 +00:00