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
..
acpi_object_usage.rst	Documentation: arm64/acpi : clarify arm64 support of IBFT	2021-03-22 12:43:20 +00:00
amu.rst	Documentation: Chinese translation of Documentation/arm64/amu.rst	2020-09-28 15:24:24 -06:00
arm-acpi.rst	arm64: Replace HTTP links with HTTPS ones	2020-07-23 14:04:37 -06:00
asymmetric-32bit.rst	Documentation: arm64: describe asymmetric 32-bit support	2021-08-20 12:33:07 +02:00
booting.rst	arm64: Document boot requirements for FEAT_SME_FA64	2021-10-28 09:30:15 +01:00
cpu-feature-registers.rst	arm64: cpufeature: add HWCAP for FEAT_RPRES	2021-12-13 18:53:00 +00:00
elf_hwcaps.rst	arm64: cpufeature: add HWCAP for FEAT_RPRES	2021-12-13 18:53:00 +00:00
features.rst	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
hugetlbpage.rst	Documentation: Chinese translation of Documentation/arm64/hugetlbpage.rst	2020-10-21 15:15:17 -06:00
index.rst	Documentation: arm64: describe asymmetric 32-bit support	2021-08-20 12:33:07 +02:00
kasan-offsets.sh	arm64: mm: extend linear region for 52-bit VA configurations	2020-11-09 17:15:37 +00:00
legacy_instructions.rst	docs: arm64: convert docs to ReST and rename to .rst	2019-06-14 14:20:27 -06:00
memory-tagging-extension.rst	Documentation: document the preferred tag checking mode feature	2021-07-28 18:39:26 +01:00
memory.rst	ARM:	2020-12-20 10:44:05 -08:00
perf.rst	Documentation: arm64: Document PMU counters access from userspace	2021-12-14 11:41:19 +00:00
pointer-authentication.rst	arm64: update PAC description for kernel	2021-12-02 10:13:35 +00:00
silicon-errata.rst	KVM: arm64: Workaround Cortex-A510's single-step and PAC trap errata	2022-02-03 09:22:30 +00:00
sve.rst	arm64/sve: Minor clarification of ABI documentation	2021-12-14 18:33:44 +00:00
tagged-address-abi.rst	docs/arm64: delete a space from tagged-address-abi	2021-12-14 19:01:37 +00:00
tagged-pointers.rst	arm64: expose FAR_EL1 tag bits in siginfo	2020-11-23 18:17:39 +00:00