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| author |   Vladimir Murzin <vladimir.murzin@arm.com> | 2016-09-12 15:49:24 +0100 |
|---|---|---|
| committer |   Christoffer Dall <christoffer.dall@linaro.org> | 2016-09-22 13:22:21 +0200 |
| commit | acda5430bee4621f218391d0bcfbe4412adb3554 (patch) | |
| tree | d279ce897d2666ca9481963dca9fc9aede6e85dd /virt/kvm/arm/vgic/vgic-kvm-device.c | |
| parent | ARM: gic-v3: Introduce 32-to-64-bit mappings for GICv3 cpu registers (diff) | |
| download | linux-dev-acda5430bee4621f218391d0bcfbe4412adb3554.tar.xz linux-dev-acda5430bee4621f218391d0bcfbe4412adb3554.zip | |
ARM: KVM: Support vgic-v3
This patch allows to build and use vgic-v3 in 32-bit mode.
Unfortunately, it can not be split in several steps without extra
stubs to keep patches independent and bisectable. For instance,
virt/kvm/arm/vgic/vgic-v3.c uses function from vgic-v3-sr.c, handling
access to GICv3 cpu interface from the guest requires vgic_v3.vgic_sre
to be already defined.
It is how support has been done:
* handle SGI requests from the guest
* report configured SRE on access to GICv3 cpu interface from the guest
* required vgic-v3 macros are provided via uapi.h
* static keys are used to select GIC backend
* to make vgic-v3 build KVM_ARM_VGIC_V3 guard is removed along with
the static inlines
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt/kvm/arm/vgic/vgic-kvm-device.c')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-kvm-device.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/virt/kvm/arm/vgic/vgic-kvm-device.c b/virt/kvm/arm/vgic/vgic-kvm-device.c index 89ef9bcc6de6..ce1f4ed9daf4 100644 --- a/virt/kvm/arm/vgic/vgic-kvm-device.c +++ b/virt/kvm/arm/vgic/vgic-kvm-device.c @@ -71,7 +71,6 @@ int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write) addr_ptr = &vgic->vgic_cpu_base; alignment = SZ_4K; break; -#ifdef CONFIG_KVM_ARM_VGIC_V3 case KVM_VGIC_V3_ADDR_TYPE_DIST: type_needed = KVM_DEV_TYPE_ARM_VGIC_V3; addr_ptr = &vgic->vgic_dist_base; @@ -82,7 +81,6 @@ int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write) addr_ptr = &vgic->vgic_redist_base; alignment = SZ_64K; break; -#endif default: r = -ENODEV; goto out; @@ -219,7 +217,6 @@ int kvm_register_vgic_device(unsigned long type) ret = kvm_register_device_ops(&kvm_arm_vgic_v2_ops, KVM_DEV_TYPE_ARM_VGIC_V2); break; -#ifdef CONFIG_KVM_ARM_VGIC_V3 case KVM_DEV_TYPE_ARM_VGIC_V3: ret = kvm_register_device_ops(&kvm_arm_vgic_v3_ops, KVM_DEV_TYPE_ARM_VGIC_V3); @@ -230,7 +227,6 @@ int kvm_register_vgic_device(unsigned long type) ret = kvm_vgic_register_its_device(); #endif break; -#endif } return ret; @@ -434,8 +430,6 @@ struct kvm_device_ops kvm_arm_vgic_v2_ops = { .has_attr = vgic_v2_has_attr, }; -#ifdef CONFIG_KVM_ARM_VGIC_V3 - static int vgic_v3_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr) { @@ -478,5 +472,3 @@ struct kvm_device_ops kvm_arm_vgic_v3_ops = { .get_attr = vgic_v3_get_attr, .has_attr = vgic_v3_has_attr, }; - -#endif /* CONFIG_KVM_ARM_VGIC_V3 */ |