Some device like VF of SRIOV only support MSI-X. With this patch, SRIOV can be enabled with KVM assigned device(all kernel space patches are ready).
Signed-off-by: Sheng Yang <[email protected]> --- virt/kvm/kvm_main.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 4d2be16..5dc6423 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -308,6 +308,10 @@ static int assigned_device_update_intx(struct kvm *kvm, if (adev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_INTX) return 0; + /* IRQ 0 means uninitialized */ + if (adev->host_irq == 0) + return 0; + if (irqchip_in_kernel(kvm)) { if (!msi2intx && (adev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI)) { @@ -529,9 +533,8 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm, r = 0; } else { printk(KERN_WARNING - "kvm: failed to enable MSI device!\n"); - r = -ENOTTY; - goto out_release; + "kvm: device didn't support INTx or MSI!\n"); + r = 0; } } else { /* Non-sharing INTx mode */ -- 1.5.4.5 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
