diff options
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/arm/hyp/vgic-v2-sr.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/virt/kvm/arm/hyp/vgic-v2-sr.c b/virt/kvm/arm/hyp/vgic-v2-sr.c deleted file mode 100644 index 0bbafdfd4adb..000000000000 --- a/virt/kvm/arm/hyp/vgic-v2-sr.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright (C) 2012-2015 - ARM Ltd - * Author: Marc Zyngier <marc.zyngier@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <linux/compiler.h> -#include <linux/irqchip/arm-gic.h> -#include <linux/kvm_host.h> - -#include <asm/kvm_emulate.h> -#include <asm/kvm_hyp.h> -#include <asm/kvm_mmu.h> - -#ifdef CONFIG_ARM64 -/* - * __vgic_v2_perform_cpuif_access -- perform a GICV access on behalf of the - * guest. - * - * @vcpu: the offending vcpu - * - * Returns: - * 1: GICV access successfully performed - * 0: Not a GICV access - * -1: Illegal GICV access - */ -int __hyp_text __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu) -{ - struct kvm *kvm = kern_hyp_va(vcpu->kvm); - struct vgic_dist *vgic = &kvm->arch.vgic; - phys_addr_t fault_ipa; - void __iomem *addr; - int rd; - - /* Build the full address */ - fault_ipa = kvm_vcpu_get_fault_ipa(vcpu); - fault_ipa |= kvm_vcpu_get_hfar(vcpu) & GENMASK(11, 0); - - /* If not for GICV, move on */ - if (fault_ipa < vgic->vgic_cpu_base || - fault_ipa >= (vgic->vgic_cpu_base + KVM_VGIC_V2_CPU_SIZE)) - return 0; - - /* Reject anything but a 32bit access */ - if (kvm_vcpu_dabt_get_as(vcpu) != sizeof(u32)) - return -1; - - /* Not aligned? Don't bother */ - if (fault_ipa & 3) - return -1; - - rd = kvm_vcpu_dabt_get_rd(vcpu); - addr = kern_hyp_va((kern_hyp_va(&kvm_vgic_global_state))->vcpu_base_va); - addr += fault_ipa - vgic->vgic_cpu_base; - - if (kvm_vcpu_dabt_iswrite(vcpu)) { - u32 data = vcpu_data_guest_to_host(vcpu, - vcpu_get_reg(vcpu, rd), - sizeof(u32)); - writel_relaxed(data, addr); - } else { - u32 data = readl_relaxed(addr); - vcpu_set_reg(vcpu, rd, vcpu_data_host_to_guest(vcpu, data, - sizeof(u32))); - } - - return 1; -} -#endif |