diff options
Diffstat (limited to 'arch/arm64/kvm/inject_fault.c')
| -rw-r--r-- | arch/arm64/kvm/inject_fault.c | 49 |
1 files changed, 35 insertions, 14 deletions
diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c index b47df73e98d7..f32f4a2a347f 100644 --- a/arch/arm64/kvm/inject_fault.c +++ b/arch/arm64/kvm/inject_fault.c @@ -18,11 +18,9 @@ static void inject_abt64(struct kvm_vcpu *vcpu, bool is_iabt, unsigned long addr { unsigned long cpsr = *vcpu_cpsr(vcpu); bool is_aarch32 = vcpu_mode_is_32bit(vcpu); - u32 esr = 0; + u64 esr = 0; - vcpu->arch.flags |= (KVM_ARM64_EXCEPT_AA64_EL1 | - KVM_ARM64_EXCEPT_AA64_ELx_SYNC | - KVM_ARM64_PENDING_EXCEPTION); + kvm_pend_exception(vcpu, EXCEPT_AA64_EL1_SYNC); vcpu_write_sys_reg(vcpu, addr, FAR_EL1); @@ -50,11 +48,9 @@ static void inject_abt64(struct kvm_vcpu *vcpu, bool is_iabt, unsigned long addr static void inject_undef64(struct kvm_vcpu *vcpu) { - u32 esr = (ESR_ELx_EC_UNKNOWN << ESR_ELx_EC_SHIFT); + u64 esr = (ESR_ELx_EC_UNKNOWN << ESR_ELx_EC_SHIFT); - vcpu->arch.flags |= (KVM_ARM64_EXCEPT_AA64_EL1 | - KVM_ARM64_EXCEPT_AA64_ELx_SYNC | - KVM_ARM64_PENDING_EXCEPTION); + kvm_pend_exception(vcpu, EXCEPT_AA64_EL1_SYNC); /* * Build an unknown exception, depending on the instruction @@ -73,8 +69,7 @@ static void inject_undef64(struct kvm_vcpu *vcpu) static void inject_undef32(struct kvm_vcpu *vcpu) { - vcpu->arch.flags |= (KVM_ARM64_EXCEPT_AA32_UND | - KVM_ARM64_PENDING_EXCEPTION); + kvm_pend_exception(vcpu, EXCEPT_AA32_UND); } /* @@ -97,14 +92,12 @@ static void inject_abt32(struct kvm_vcpu *vcpu, bool is_pabt, u32 addr) far = vcpu_read_sys_reg(vcpu, FAR_EL1); if (is_pabt) { - vcpu->arch.flags |= (KVM_ARM64_EXCEPT_AA32_IABT | - KVM_ARM64_PENDING_EXCEPTION); + kvm_pend_exception(vcpu, EXCEPT_AA32_IABT); far &= GENMASK(31, 0); far |= (u64)addr << 32; vcpu_write_sys_reg(vcpu, fsr, IFSR32_EL2); } else { /* !iabt */ - vcpu->arch.flags |= (KVM_ARM64_EXCEPT_AA32_DABT | - KVM_ARM64_PENDING_EXCEPTION); + kvm_pend_exception(vcpu, EXCEPT_AA32_DABT); far &= GENMASK(63, 32); far |= addr; vcpu_write_sys_reg(vcpu, fsr, ESR_EL1); @@ -145,6 +138,34 @@ void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr) inject_abt64(vcpu, true, addr); } +void kvm_inject_size_fault(struct kvm_vcpu *vcpu) +{ + unsigned long addr, esr; + + addr = kvm_vcpu_get_fault_ipa(vcpu); + addr |= kvm_vcpu_get_hfar(vcpu) & GENMASK(11, 0); + + if (kvm_vcpu_trap_is_iabt(vcpu)) + kvm_inject_pabt(vcpu, addr); + else + kvm_inject_dabt(vcpu, addr); + + /* + * If AArch64 or LPAE, set FSC to 0 to indicate an Address + * Size Fault at level 0, as if exceeding PARange. + * + * Non-LPAE guests will only get the external abort, as there + * is no way to to describe the ASF. + */ + if (vcpu_el1_is_32bit(vcpu) && + !(vcpu_read_sys_reg(vcpu, TCR_EL1) & TTBCR_EAE)) + return; + + esr = vcpu_read_sys_reg(vcpu, ESR_EL1); + esr &= ~GENMASK_ULL(5, 0); + vcpu_write_sys_reg(vcpu, esr, ESR_EL1); +} + /** * kvm_inject_undefined - inject an undefined instruction into the guest * @vcpu: The vCPU in which to inject the exception |