This is the backport of the arm64 SSBD patches to 4.17. Not much to
say here, this is basically what went into 4.18.
4.14 and 4.9 to follow.
Thanks,
M.
Marc Zyngier (14):
arm/arm64: smccc: Add SMCCC-specific return codes
arm64: Call ARCH_WORKAROUND_2 on transitions between EL0 and EL1
arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
arm64: Add ARCH_WORKAROUND_2 probing
arm64: Add 'ssbd' command-line option
arm64: ssbd: Add global mitigation state accessor
arm64: ssbd: Skip apply_ssbd if not using dynamic mitigation
arm64: ssbd: Restore mitigation status on CPU resume
arm64: ssbd: Introduce thread flag to control userspace mitigation
arm64: ssbd: Add prctl interface for per-thread mitigation
arm64: KVM: Add HYP per-cpu accessors
arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests
arm64: KVM: Add ARCH_WORKAROUND_2 discovery through
ARCH_FEATURES_FUNC_ID
.../admin-guide/kernel-parameters.txt | 17 ++
arch/arm/include/asm/kvm_host.h | 12 ++
arch/arm/include/asm/kvm_mmu.h | 5 +
arch/arm64/Kconfig | 9 +
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/cpufeature.h | 22 +++
arch/arm64/include/asm/kvm_asm.h | 30 ++-
arch/arm64/include/asm/kvm_host.h | 26 +++
arch/arm64/include/asm/kvm_mmu.h | 24 +++
arch/arm64/include/asm/thread_info.h | 1 +
arch/arm64/kernel/Makefile | 1 +
arch/arm64/kernel/asm-offsets.c | 1 +
arch/arm64/kernel/cpu_errata.c | 180 ++++++++++++++++++
arch/arm64/kernel/entry.S | 30 +++
arch/arm64/kernel/hibernate.c | 11 ++
arch/arm64/kernel/ssbd.c | 110 +++++++++++
arch/arm64/kernel/suspend.c | 8 +
arch/arm64/kvm/hyp/hyp-entry.S | 38 +++-
arch/arm64/kvm/hyp/switch.c | 42 ++++
arch/arm64/kvm/reset.c | 4 +
include/linux/arm-smccc.h | 10 +
virt/kvm/arm/arm.c | 4 +
virt/kvm/arm/psci.c | 18 +-
23 files changed, 600 insertions(+), 6 deletions(-)
create mode 100644 arch/arm64/kernel/ssbd.c
--
2.18.0
