From 065c0034823b513d3ca95760a2ad1765e3ef629c Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Mon, 15 Dec 2014 18:43:33 +0100 Subject: KVM: arm/arm64: vgic: add init entry to VGIC KVM device Since the advent of VGIC dynamic initialization, this latter is initialized quite late on the first vcpu run or "on-demand", when injecting an IRQ or when the guest sets its registers. This initialization could be initiated explicitly much earlier by the users-space, as soon as it has provided the requested dimensioning parameters. This patch adds a new entry to the VGIC KVM device that allows the user to manually request the VGIC init: - a new KVM_DEV_ARM_VGIC_GRP_CTRL group is introduced. - Its first attribute is KVM_DEV_ARM_VGIC_CTRL_INIT The rationale behind introducing a group is to be able to add other controls later on, if needed. Signed-off-by: Eric Auger Signed-off-by: Christoffer Dall --- virt/kvm/arm/vgic.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'virt') diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index b8d57e86cfdc..c84f53dfcd62 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -2302,7 +2302,14 @@ static int vgic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr) return ret; } - + case KVM_DEV_ARM_VGIC_GRP_CTRL: { + switch (attr->attr) { + case KVM_DEV_ARM_VGIC_CTRL_INIT: + r = vgic_init(dev->kvm); + return r; + } + break; + } } return -ENXIO; @@ -2381,6 +2388,11 @@ static int vgic_has_attr(struct kvm_device *dev, struct kvm_device_attr *attr) return vgic_has_attr_regs(vgic_cpu_ranges, offset); case KVM_DEV_ARM_VGIC_GRP_NR_IRQS: return 0; + case KVM_DEV_ARM_VGIC_GRP_CTRL: + switch (attr->attr) { + case KVM_DEV_ARM_VGIC_CTRL_INIT: + return 0; + } } return -ENXIO; } -- cgit v1.2.3