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| author | Marc Zyngier <maz@kernel.org> | 2019-11-08 11:27:29 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2019-11-08 11:27:29 +0000 |
| commit | cd7056ae34af0e9424da97bbc7d2b38246ba8a2c (patch) | |
| tree | eefb53f37554ebacf3a91a512839b6b6afbe75f4 /arch/arm64/include/asm/kvm_emulate.h | |
| parent | a4b28f5c67983d92c911ca1404728bc4ea958c0e (diff) | |
| parent | ef2e78ddadbb939ce79553b10dee0131d65d8f3e (diff) | |
| download | linux-cd7056ae34af0e9424da97bbc7d2b38246ba8a2c.tar.bz2 | |
Merge remote-tracking branch 'kvmarm/misc-5.5' into kvmarm/next
Diffstat (limited to 'arch/arm64/include/asm/kvm_emulate.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_emulate.h | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index a3c967988e1d..5efe5ca8fecf 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -53,8 +53,18 @@ static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu) /* trap error record accesses */ vcpu->arch.hcr_el2 |= HCR_TERR; } - if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) + + if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB)) { vcpu->arch.hcr_el2 |= HCR_FWB; + } else { + /* + * For non-FWB CPUs, we trap VM ops (HCR_EL2.TVM) until M+C + * get set in SCTLR_EL1 such that we can detect when the guest + * MMU gets turned on and do the necessary cache maintenance + * then. + */ + vcpu->arch.hcr_el2 |= HCR_TVM; + } if (test_bit(KVM_ARM_VCPU_EL1_32BIT, vcpu->arch.features)) vcpu->arch.hcr_el2 &= ~HCR_RW; @@ -77,14 +87,19 @@ static inline unsigned long *vcpu_hcr(struct kvm_vcpu *vcpu) return (unsigned long *)&vcpu->arch.hcr_el2; } -static inline void vcpu_clear_wfe_traps(struct kvm_vcpu *vcpu) +static inline void vcpu_clear_wfx_traps(struct kvm_vcpu *vcpu) { vcpu->arch.hcr_el2 &= ~HCR_TWE; + if (atomic_read(&vcpu->arch.vgic_cpu.vgic_v3.its_vpe.vlpi_count)) + vcpu->arch.hcr_el2 &= ~HCR_TWI; + else + vcpu->arch.hcr_el2 |= HCR_TWI; } -static inline void vcpu_set_wfe_traps(struct kvm_vcpu *vcpu) +static inline void vcpu_set_wfx_traps(struct kvm_vcpu *vcpu) { vcpu->arch.hcr_el2 |= HCR_TWE; + vcpu->arch.hcr_el2 |= HCR_TWI; } static inline void vcpu_ptrauth_enable(struct kvm_vcpu *vcpu) |