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...*vp_dev = to_vp_device(vdev); void __iomem *ioaddr = vp_dev->ioaddr + - VIRTIO_PCI_CONFIG(vp_dev) + offset; + VIRTIO_PCI_CONFIG_OFF(vp_dev->msix_enabled) + + offset; const u8 *ptr = buf; int i; diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index 90007a1..2070232 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -78,8 +78,6 @@ /* The remaining space is defined by each driver as the per-driver * configuration space */ #define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 24 : 20) -/* Deprecated: please...

...*vp_dev = to_vp_device(vdev); void __iomem *ioaddr = vp_dev->ioaddr + - VIRTIO_PCI_CONFIG(vp_dev) + offset; + VIRTIO_PCI_CONFIG_OFF(vp_dev->msix_enabled) + + offset; const u8 *ptr = buf; int i; diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index 90007a1..2070232 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -78,8 +78,6 @@ /* The remaining space is defined by each driver as the per-driver * configuration space */ #define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 24 : 20) -/* Deprecated: please...

...CAP_PCI_CFG, let's define the structure that goes with it. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_pci.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index 7530146..90007a1 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -157,6 +157,12 @@ struct virtio_pci_common_cfg { __le32 queue_used_hi; /* read-write */ }; +/* Fields in VIRTIO_PCI_CAP_PCI_CFG: */ +struct virtio_pci_cfg_cap { + struct virtio_pci_cap cap; + __u8 pci_cfg_da...

...> + VIRTIO_PCI_CONFIG_OFF(vp_dev->msix_enabled) + > + offset; > const u8 *ptr = buf; > int i; > I agree that VIRTIO_PCI_CONFIG_OFF is a better interface. So above looks fine. > diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h > index 90007a1..2070232 100644 > --- a/include/uapi/linux/virtio_pci.h > +++ b/include/uapi/linux/virtio_pci.h > @@ -78,8 +78,6 @@ > /* The remaining space is defined by each driver as the per-driver > * configuration space */ > #define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 2...

...CAP_PCI_CFG, let's define the structure that goes with it. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/uapi/linux/virtio_pci.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index 7530146..90007a1 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -157,6 +157,12 @@ struct virtio_pci_common_cfg { __le32 queue_used_hi; /* read-write */ }; +/* Fields in VIRTIO_PCI_CAP_PCI_CFG: */ +struct virtio_pci_cfg_cap { + struct virtio_pci_cap cap; + __u8 pci_cfg_da...

...; - if (vp_dev->msix_enabled) { + if (vp_dev->pci_dev->msix_enabled) { vp_iowrite16(VIRTIO_MSI_NO_VECTOR, &vp_dev->common->queue_msix_vector); /* Flush the write out to device */ diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index 90007a1..15b4385 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -79,7 +79,7 @@ * configuration space */ #define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 24 : 20) /* Deprecated: please use VIRTIO_PCI_CONFIG_OFF instead */ -#define VIRTIO_PCI_CONFIG(dev...

Hi Michael, this series contains a couple cleanups for the virtio_pci interrupt handling code, including a switch to the new pci_irq_alloc_vectors helper. All these are in preparation of taking advantage of the new PCI layer / core IRQ interrupt affinity handling, for which I will send out a series once this and some core interrupt handling changes are in.

Hi Michael, this series contains a couple cleanups for the virtio_pci interrupt handling code, including a switch to the new pci_irq_alloc_vectors helper. All these are in preparation of taking advantage of the new PCI layer / core IRQ interrupt affinity handling, for which I will send out a series once this and some core interrupt handling changes are in.

Hi Michael, hi Jason, This patches applies a few cleanups to the virtio PCI interrupt handling code, and then converts the virtio PCI code to use the automatic MSI-X vectors spreading, as well as using the information in virtio-blk and virtio-scsi to automatically align the blk-mq queues to the MSI-X vectors. Changes since V1: - dropped the patches already merged for 4.10-rc - new patch to

Hi Michael, hi Jason, This patches applies a few cleanups to the virtio PCI interrupt handling code, and then converts the virtio PCI code to use the automatic MSI-X vectors spreading, as well as using the information in virtio-blk and virtio-scsi to automatically align the blk-mq queues to the MSI-X vectors. Changes since V1: - dropped the patches already merged for 4.10-rc - new patch to

Hi Michael, this series contains a couple cleanups for the virtio_pci interrupt handling code, including a switch to the new pci_irq_alloc_vectors helper, and support for automatic affinity by the PCI layer if the consumers ask for it. It then converts over virtio_blk to use this functionality so that it's blk-mq queues are aligned to the MSI-X vector routing. I have a similar patch in the

Hi Michael, this series contains a couple cleanups for the virtio_pci interrupt handling code, including a switch to the new pci_irq_alloc_vectors helper, and support for automatic affinity by the PCI layer if the consumers ask for it. It then converts over virtio_blk to use this functionality so that it's blk-mq queues are aligned to the MSI-X vector routing. I have a similar patch in the

...uct virt_queue *vq) { vq->endian = vdev->endian; } +struct virtio_pci_ioevent_param { + struct virtio_device *vdev; + u32 vq; +}; + #endif /* KVM__VIRTIO_H */ diff --git a/include/linux/virtio_pci.h b/include/linux/virtio_pci.h new file mode 100644 index 0000000..90007a1 --- /dev/null +++ b/include/linux/virtio_pci.h @@ -0,0 +1,199 @@ +/* + * Virtio PCI driver + * + * This module allows virtio devices to be used over a virtual PCI device. + * This can be used with QEMU based VMMs like KVM or Xen. + * + * Copyright IBM Corp. 2007 + * + * Authors: + * Anthony Liguor...

...uct virt_queue *vq) { vq->endian = vdev->endian; } +struct virtio_pci_ioevent_param { + struct virtio_device *vdev; + u32 vq; +}; + #endif /* KVM__VIRTIO_H */ diff --git a/include/linux/virtio_pci.h b/include/linux/virtio_pci.h new file mode 100644 index 0000000..90007a1 --- /dev/null +++ b/include/linux/virtio_pci.h @@ -0,0 +1,199 @@ +/* + * Virtio PCI driver + * + * This module allows virtio devices to be used over a virtual PCI device. + * This can be used with QEMU based VMMs like KVM or Xen. + * + * Copyright IBM Corp. 2007 + * + * Authors: + * Anthony Liguor...