This is the backport of the arm64 SSBD patches to 4.14. I've had to
cherry-pick a number of dependencies:
- parts of the SDEI series that allow tpidr_el2 to be used as the
per-cpu offset
- one patch from the VHE series that introduce vcpu retrieval as a
per-cpu variable
- one patch from the the EL2 randomisation series, allowing relative
addressing of global structures
- the dynamic patching infrastructure
Christoffer Dall (1):
KVM: arm64: Avoid storing the vcpu pointer on the stack
James Morse (5):
KVM: arm64: Store vcpu on the stack during __guest_enter()
KVM: arm/arm64: Convert kvm_host_cpu_state to a static per-cpu
allocation
KVM: arm64: Change hyp_panic()s dependency on tpidr_el2
arm64: alternatives: use tpidr_el2 on VHE hosts
KVM: arm64: Stop save/restoring host tpidr_el1 on VHE
Marc Zyngier (16):
arm64: alternatives: Add dynamic patching feature
KVM: arm/arm64: Do not use kern_hyp_va() with kvm_vgic_global_state
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 | 12 ++
arch/arm64/Kconfig | 9 +
arch/arm64/include/asm/alternative.h | 43 ++++-
arch/arm64/include/asm/assembler.h | 8 +
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/cpufeature.h | 22 +++
arch/arm64/include/asm/kvm_asm.h | 41 ++++
arch/arm64/include/asm/kvm_host.h | 43 +++++
arch/arm64/include/asm/kvm_mmu.h | 44 +++++
arch/arm64/include/asm/percpu.h | 11 +-
arch/arm64/include/asm/thread_info.h | 1 +
arch/arm64/kernel/Makefile | 1 +
arch/arm64/kernel/alternative.c | 52 +++--
arch/arm64/kernel/asm-offsets.c | 2 +
arch/arm64/kernel/cpu_errata.c | 180 ++++++++++++++++++
arch/arm64/kernel/cpufeature.c | 17 ++
arch/arm64/kernel/entry.S | 30 +++
arch/arm64/kernel/hibernate.c | 11 ++
arch/arm64/kernel/ssbd.c | 108 +++++++++++
arch/arm64/kernel/suspend.c | 8 +
arch/arm64/kvm/hyp-init.S | 4 +
arch/arm64/kvm/hyp/entry.S | 12 +-
arch/arm64/kvm/hyp/hyp-entry.S | 62 ++++--
arch/arm64/kvm/hyp/switch.c | 64 +++++--
arch/arm64/kvm/hyp/sysreg-sr.c | 21 +-
arch/arm64/kvm/reset.c | 4 +
arch/arm64/mm/proc.S | 8 +
include/linux/arm-smccc.h | 10 +
virt/kvm/arm/arm.c | 22 +--
virt/kvm/arm/hyp/vgic-v2-sr.c | 2 +-
virt/kvm/arm/psci.c | 18 +-
33 files changed, 823 insertions(+), 79 deletions(-)
create mode 100644 arch/arm64/kernel/ssbd.c
--
2.18.0
