mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

KVM: ARM: vgic: revisit implementation of irqchip_in_kernel 

So far, irqchip_in_kernel() was implemented by testing the value of
vctrl_base, which worked fine with GICv2.

With GICv3, this field is useless, as we're using system registers
instead of a emmory mapped interface. To solve this, add a boolean
flag indicating if the we're using a vgic or not.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2014-05-15 10:03:25 +01:00 committed by Christoffer Dall
parent 8f186d522c
commit f982cf4e9c
2 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/kvm/arm_vgic.h
View File

@ -117,6 +117,7 @@ struct vgic_params {
struct vgic_dist {
#ifdef CONFIG_KVM_ARM_VGIC
spinlock_t lock;
bool in_kernel;
bool ready;
/* Virtual control interface mapping */
@ -212,7 +213,7 @@ int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);
bool vgic_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
struct kvm_exit_mmio *mmio);
#define irqchip_in_kernel(k) (!!((k)->arch.vgic.vctrl_base))
#define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel))
#define vgic_initialized(k) ((k)->arch.vgic.ready)
int vgic_v2_probe(struct device_node *vgic_node,

1
virt/kvm/arm/vgic.c
View File

@ -1650,6 +1650,7 @@ int kvm_vgic_create(struct kvm *kvm)
}
spin_lock_init(&kvm->arch.vgic.lock);
kvm->arch.vgic.in_kernel = true;
kvm->arch.vgic.vctrl_base = vgic->vctrl_base;
kvm->arch.vgic.vgic_dist_base = VGIC_ADDR_UNDEF;
kvm->arch.vgic.vgic_cpu_base = VGIC_ADDR_UNDEF;