James Morse 1dd498e5e2 KVM: arm64: Workaround Cortex-A510's single-step and PAC trap errata ... Cortex-A510's erratum #2077057 causes SPSR_EL2 to be corrupted when single-stepping authenticated ERET instructions. A single step is expected, but a pointer authentication trap is taken instead. The erratum causes SPSR_EL1 to be copied to SPSR_EL2, which could allow EL1 to cause a return to EL2 with a guest controlled ELR_EL2. Because the conditions require an ERET into active-not-pending state, this is only a problem for the EL2 when EL2 is stepping EL1. In this case the previous SPSR_EL2 value is preserved in struct kvm_vcpu, and can be restored. Cc: stable@vger.kernel.org # 53960faf2b: arm64: Add Cortex-A510 CPU part definition Cc: stable@vger.kernel.org Signed-off-by: James Morse <james.morse@arm.com> [maz: fixup cpucaps ordering] Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220127122052.1584324-5-james.morse@arm.com		2022-02-03 09:22:30 +00:00
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cpucaps	KVM: arm64: Workaround Cortex-A510's single-step and PAC trap errata	2022-02-03 09:22:30 +00:00
gen-cpucaps.awk	arm64: tools: Add __ASM_CPUCAPS_H to the endif in cpucaps.h	2021-05-13 17:57:43 +01:00
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