From e656a1f91e701e6a1eddf8c029b45639b60877d5 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 6 Sep 2016 14:02:14 +0100 Subject: [PATCH] arm: KVM: Drop unreachable HYP abort handlers Both data and prefetch aborts occuring in HYP lead to a well deserved panic. Let's get rid of these silly handlers. Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- arch/arm/kvm/handle_exit.c | 27 --------------------------- 1 file changed, 27 deletions(-) diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c index 4eacb5cb60e8..4e40d1955e35 100644 --- a/arch/arm/kvm/handle_exit.c +++ b/arch/arm/kvm/handle_exit.c @@ -28,14 +28,6 @@ typedef int (*exit_handle_fn)(struct kvm_vcpu *, struct kvm_run *); -static int handle_svc_hyp(struct kvm_vcpu *vcpu, struct kvm_run *run) -{ - /* SVC called from Hyp mode should never get here */ - kvm_debug("SVC called from Hyp mode shouldn't go here\n"); - BUG(); - return -EINVAL; /* Squash warning */ -} - static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run) { int ret; @@ -59,22 +51,6 @@ static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run) return 1; } -static int handle_pabt_hyp(struct kvm_vcpu *vcpu, struct kvm_run *run) -{ - /* The hypervisor should never cause aborts */ - kvm_err("Prefetch Abort taken from Hyp mode at %#08lx (HSR: %#08x)\n", - kvm_vcpu_get_hfar(vcpu), kvm_vcpu_get_hsr(vcpu)); - return -EFAULT; -} - -static int handle_dabt_hyp(struct kvm_vcpu *vcpu, struct kvm_run *run) -{ - /* This is either an error in the ws. code or an external abort */ - kvm_err("Data Abort taken from Hyp mode at %#08lx (HSR: %#08x)\n", - kvm_vcpu_get_hfar(vcpu), kvm_vcpu_get_hsr(vcpu)); - return -EFAULT; -} - /** * kvm_handle_wfx - handle a WFI or WFE instructions trapped in guests * @vcpu: the vcpu pointer @@ -112,13 +88,10 @@ static exit_handle_fn arm_exit_handlers[] = { [HSR_EC_CP14_64] = kvm_handle_cp14_access, [HSR_EC_CP_0_13] = kvm_handle_cp_0_13_access, [HSR_EC_CP10_ID] = kvm_handle_cp10_id, - [HSR_EC_SVC_HYP] = handle_svc_hyp, [HSR_EC_HVC] = handle_hvc, [HSR_EC_SMC] = handle_smc, [HSR_EC_IABT] = kvm_handle_guest_abort, - [HSR_EC_IABT_HYP] = handle_pabt_hyp, [HSR_EC_DABT] = kvm_handle_guest_abort, - [HSR_EC_DABT_HYP] = handle_dabt_hyp, }; static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu) -- 2.20.1