Marc Zyngier c219bc4e92 arm64: Trap WFI executed in userspace ... It recently came to light that userspace can execute WFI, and that the arm64 kernel doesn't trap this event. This sounds rather benign, but the kernel should decide when it wants to wait for an interrupt, and not userspace. Let's trap WFI and immediately return after having skipped the instruction. This effectively makes WFI a rather expensive NOP. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2018-10-01 16:52:24 +01:00
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asm	arm64: Trap WFI executed in userspace	2018-10-01 16:52:24 +01:00
uapi/asm	arm64: ssbd: Add support for PSTATE.SSBS rather than trapping to EL3	2018-09-14 17:46:19 +01:00