From 9d5fcb9dd74b5e0070ef2f66f7f4ae14a23b0206 Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Mon, 18 Jul 2016 10:57:36 +0000 Subject: [PATCH] KVM: arm/arm64: Fix vGICv2 KVM_DEV_ARM_VGIC_GRP_CPU/DIST_REGS For VGICv2 save and restore the CPU interface registers are accessed. Restore the modality which has been altered. Also explicitly set the iodev_type for both the DIST and CPU interface. Signed-off-by: Eric Auger Signed-off-by: Marc Zyngier --- virt/kvm/arm/vgic/vgic-mmio-v2.c | 2 ++ virt/kvm/arm/vgic/vgic-mmio.c | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/virt/kvm/arm/vgic/vgic-mmio-v2.c b/virt/kvm/arm/vgic/vgic-mmio-v2.c index 4152348f5e4f..b44b359cbbad 100644 --- a/virt/kvm/arm/vgic/vgic-mmio-v2.c +++ b/virt/kvm/arm/vgic/vgic-mmio-v2.c @@ -437,6 +437,7 @@ int vgic_v2_cpuif_uaccess(struct kvm_vcpu *vcpu, bool is_write, struct vgic_io_device dev = { .regions = vgic_v2_cpu_registers, .nr_regions = ARRAY_SIZE(vgic_v2_cpu_registers), + .iodev_type = IODEV_CPUIF, }; return vgic_uaccess(vcpu, &dev, is_write, offset, val); @@ -448,6 +449,7 @@ int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write, struct vgic_io_device dev = { .regions = vgic_v2_dist_registers, .nr_regions = ARRAY_SIZE(vgic_v2_dist_registers), + .iodev_type = IODEV_DIST, }; return vgic_uaccess(vcpu, &dev, is_write, offset, val); diff --git a/virt/kvm/arm/vgic/vgic-mmio.c b/virt/kvm/arm/vgic/vgic-mmio.c index 26be827bbfcc..3bad3c5ed431 100644 --- a/virt/kvm/arm/vgic/vgic-mmio.c +++ b/virt/kvm/arm/vgic/vgic-mmio.c @@ -484,7 +484,8 @@ static int dispatch_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, switch (iodev->iodev_type) { case IODEV_CPUIF: - return 1; + data = region->read(vcpu, addr, len); + break; case IODEV_DIST: data = region->read(vcpu, addr, len); break; @@ -517,6 +518,7 @@ static int dispatch_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, switch (iodev->iodev_type) { case IODEV_CPUIF: + region->write(vcpu, addr, len, data); break; case IODEV_DIST: region->write(vcpu, addr, len, data); -- 2.20.1