UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/arch/powerpc/kvm/irq.h

21 lines
307 B
C
Raw Normal View History

KVM: PPC: Support irq routing and irqfd for in-kernel MPIC Now that all the irq routing and irqfd pieces are generic, we can expose real irqchip support to all of KVM's internal helpers. This allows us to use irqfd with the in-kernel MPIC. Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-16 23:42:19 +08:00
#ifndef __IRQ_H
#define __IRQ_H
#include <linux/kvm_host.h>
static inline int irqchip_in_kernel(struct kvm *kvm)
{
int ret = 0;
#ifdef CONFIG_KVM_MPIC
ret = ret || (kvm->arch.mpic != NULL);
KVM: PPC: Book3S: Add API for in-kernel XICS emulation This adds the API for userspace to instantiate an XICS device in a VM and connect VCPUs to it. The API consists of a new device type for the KVM_CREATE_DEVICE ioctl, a new capability KVM_CAP_IRQ_XICS, which functions similarly to KVM_CAP_IRQ_MPIC, and the KVM_IRQ_LINE ioctl, which is used to assert and deassert interrupt inputs of the XICS. The XICS device has one attribute group, KVM_DEV_XICS_GRP_SOURCES. Each attribute within this group corresponds to the state of one interrupt source. The attribute number is the same as the interrupt source number. This does not support irq routing or irqfd yet. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-27 08:28:37 +08:00
#endif
#ifdef CONFIG_KVM_XICS
ret = ret || (kvm->arch.xics != NULL);
KVM: PPC: Support irq routing and irqfd for in-kernel MPIC Now that all the irq routing and irqfd pieces are generic, we can expose real irqchip support to all of KVM's internal helpers. This allows us to use irqfd with the in-kernel MPIC. Signed-off-by: Alexander Graf <agraf@suse.de>
2013-04-16 23:42:19 +08:00
#endif
smp_rmb();
return ret;
}
#endif