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| author | Jean-Philippe Brucker <jean-philippe.brucker@arm.com> | 2015-10-01 13:47:19 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-10-09 23:11:57 +0100 |
| commit | 4f64cb65bf76fbd89c62d8e69c7bf75091950739 (patch) | |
| tree | 5f0a1c9211947e817be6f499f1491a4bbf1573d9 | |
| parent | 0b28f1db3dd2d4377c4a4dd8f85713ef44f11a25 (diff) | |
| download | linux-4f64cb65bf76fbd89c62d8e69c7bf75091950739.tar.bz2 | |
arm/arm64: KVM: Only allow 64bit hosts to build VGICv3
Hardware virtualisation of GICv3 is only supported by 64bit hosts for
the moment. Some VGICv3 bits are missing from the 32bit side, and this
patch allows to still be able to build 32bit hosts when CONFIG_ARM_GIC_V3
is selected.
To this end, we introduce a new option, CONFIG_KVM_ARM_VGIC_V3, that is
only enabled on the 64bit side. The selection is done unconditionally
because CONFIG_ARM_GIC_V3 is always enabled on arm64.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| -rw-r--r-- | arch/arm64/kvm/Kconfig | 4 | ||||
| -rw-r--r-- | include/kvm/arm_vgic.h | 4 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic.c | 4 |
3 files changed, 8 insertions, 4 deletions
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 5c7e920e4861..ff5292c6277c 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -16,6 +16,9 @@ menuconfig VIRTUALIZATION if VIRTUALIZATION +config KVM_ARM_VGIC_V3 + bool + config KVM bool "Kernel-based Virtual Machine (KVM) support" depends on OF @@ -31,6 +34,7 @@ config KVM select KVM_VFIO select HAVE_KVM_EVENTFD select HAVE_KVM_IRQFD + select KVM_ARM_VGIC_V3 ---help--- Support hosting virtualized guest machines. diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index 4e14dac282bb..6a3538ef7275 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -282,7 +282,7 @@ struct vgic_v2_cpu_if { }; struct vgic_v3_cpu_if { -#ifdef CONFIG_ARM_GIC_V3 +#ifdef CONFIG_KVM_ARM_VGIC_V3 u32 vgic_hcr; u32 vgic_vmcr; u32 vgic_sre; /* Restored only, change ignored */ @@ -364,7 +364,7 @@ void kvm_vgic_set_phys_irq_active(struct irq_phys_map *map, bool active); int vgic_v2_probe(struct device_node *vgic_node, const struct vgic_ops **ops, const struct vgic_params **params); -#ifdef CONFIG_ARM_GIC_V3 +#ifdef CONFIG_KVM_ARM_VGIC_V3 int vgic_v3_probe(struct device_node *vgic_node, const struct vgic_ops **ops, const struct vgic_params **params); diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 6bd1c9bf7ae7..77b0176b0484 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -2122,7 +2122,7 @@ static int init_vgic_model(struct kvm *kvm, int type) case KVM_DEV_TYPE_ARM_VGIC_V2: vgic_v2_init_emulation(kvm); break; -#ifdef CONFIG_ARM_GIC_V3 +#ifdef CONFIG_KVM_ARM_VGIC_V3 case KVM_DEV_TYPE_ARM_VGIC_V3: vgic_v3_init_emulation(kvm); break; @@ -2284,7 +2284,7 @@ int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write) block_size = KVM_VGIC_V2_CPU_SIZE; alignment = SZ_4K; break; -#ifdef CONFIG_ARM_GIC_V3 +#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; |