diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index 7c347ab3a555..dae43dabab8b 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -75,6 +75,7 @@ enum __kvm_host_smccc_func { __KVM_HOST_SMCCC_FUNC___vgic_v3_write_vmcr, __KVM_HOST_SMCCC_FUNC___vgic_v3_save_aprs, __KVM_HOST_SMCCC_FUNC___vgic_v3_restore_aprs, + __KVM_HOST_SMCCC_FUNC___pkvm_vcpu_init_traps, __KVM_HOST_SMCCC_FUNC___pkvm_init_shadow, __KVM_HOST_SMCCC_FUNC___pkvm_teardown_shadow, }; diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 6ed7ef7785fe..66de1591fb99 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -659,6 +659,14 @@ int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu) static_branch_inc(&userspace_irqchip_in_use); } + /* + * Initialize traps for protected VMs. + * NOTE: Move to run in EL2 directly, rather than via a hypercall, once + * the code is in place for first run initialization at EL2. + */ + if (kvm_vm_is_protected(kvm)) + kvm_call_hyp_nvhe(__pkvm_vcpu_init_traps, vcpu); + return ret; } diff --git a/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h b/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h index 1e6d995968a1..45a84f0ade04 100644 --- a/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h +++ b/arch/arm64/kvm/hyp/include/nvhe/trap_handler.h @@ -15,4 +15,6 @@ #define DECLARE_REG(type, name, ctxt, reg) \ type name = (type)cpu_reg(ctxt, (reg)) +void __pkvm_vcpu_init_traps(struct kvm_vcpu *vcpu); + #endif /* __ARM64_KVM_NVHE_TRAP_HANDLER_H__ */ diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-main.c b/arch/arm64/kvm/hyp/nvhe/hyp-main.c index 46ea55349cba..fe25bc647596 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-main.c +++ b/arch/arm64/kvm/hyp/nvhe/hyp-main.c @@ -447,6 +447,13 @@ static void handle___pkvm_prot_finalize(struct kvm_cpu_context *host_ctxt) cpu_reg(host_ctxt, 1) = __pkvm_prot_finalize(); } +static void handle___pkvm_vcpu_init_traps(struct kvm_cpu_context *host_ctxt) +{ + DECLARE_REG(struct kvm_vcpu *, vcpu, host_ctxt, 1); + + __pkvm_vcpu_init_traps(kern_hyp_va(vcpu)); +} + static void handle___pkvm_init_shadow(struct kvm_cpu_context *host_ctxt) { DECLARE_REG(struct kvm *, host_kvm, host_ctxt, 1); @@ -492,6 +499,7 @@ static const hcall_t host_hcall[] = { HANDLE_FUNC(__vgic_v3_write_vmcr), HANDLE_FUNC(__vgic_v3_save_aprs), HANDLE_FUNC(__vgic_v3_restore_aprs), + HANDLE_FUNC(__pkvm_vcpu_init_traps), HANDLE_FUNC(__pkvm_init_shadow), HANDLE_FUNC(__pkvm_teardown_shadow), }; diff --git a/arch/arm64/kvm/hyp/nvhe/pkvm.c b/arch/arm64/kvm/hyp/nvhe/pkvm.c index 34fc9039110f..2e1839e72939 100644 --- a/arch/arm64/kvm/hyp/nvhe/pkvm.c +++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c @@ -190,7 +190,7 @@ static void pvm_init_trap_regs(struct kvm_vcpu *vcpu) /* * Initialize trap register values for protected VMs. */ -static void pkvm_vcpu_init_traps(struct kvm_vcpu *vcpu) +void __pkvm_vcpu_init_traps(struct kvm_vcpu *vcpu) { pvm_init_trap_regs(vcpu); pvm_init_traps_aa64pfr0(vcpu); @@ -337,7 +337,6 @@ static void init_shadow_structs(struct kvm *kvm, struct kvm_shadow_vm *vm, int n kvm_reset_pvm_sys_regs(shadow_vcpu); copy_features(shadow_vcpu, host_vcpu); - pkvm_vcpu_init_traps(shadow_vcpu); vm->vcpus[i] = shadow_vcpu; shadow_state->vm = vm;