search for: set_guest_featur

...d(int offset, bool msix, u32 *config_off); enum virtio_trans { + VIRTIO_PCI_MODERN, VIRTIO_PCI, VIRTIO_MMIO, }; @@ -138,8 +142,8 @@ struct virtio_device { struct virtio_ops { u8 *(*get_config)(struct kvm *kvm, void *dev); - u32 (*get_host_features)(struct kvm *kvm, void *dev); - void (*set_guest_features)(struct kvm *kvm, void *dev, u32 features); + u32 (*get_host_features)(struct kvm *kvm, void *dev, int sel); + void (*set_guest_features)(struct kvm *kvm, void *dev, u32 features, int sel); int (*init_vq)(struct kvm *kvm, void *dev, u32 vq, u32 page_size, u32 align, u32 pfn); int (*...

...d(int offset, bool msix, u32 *config_off); enum virtio_trans { + VIRTIO_PCI_MODERN, VIRTIO_PCI, VIRTIO_MMIO, }; @@ -138,8 +142,8 @@ struct virtio_device { struct virtio_ops { u8 *(*get_config)(struct kvm *kvm, void *dev); - u32 (*get_host_features)(struct kvm *kvm, void *dev); - void (*set_guest_features)(struct kvm *kvm, void *dev, u32 features); + u32 (*get_host_features)(struct kvm *kvm, void *dev, int sel); + void (*set_guest_features)(struct kvm *kvm, void *dev, u32 features, int sel); int (*init_vq)(struct kvm *kvm, void *dev, u32 vq, u32 page_size, u32 align, u32 pfn); int (*...

As it was discussed recently, there's currently no way for the guest to notify the host about panics. Further more, there's no reasonable way to notify the host of other critical events such as an OOM kill. This short patch series introduces a new device named virtio-notifier which does two simple things: 1. Provide a simple interface for the guest to notify the host of critical

As it was discussed recently, there's currently no way for the guest to notify the host about panics. Further more, there's no reasonable way to notify the host of other critical events such as an OOM kill. This short patch series introduces a new device named virtio-notifier which does two simple things: 1. Provide a simple interface for the guest to notify the host of critical

...s(struct kvm *kvm, void *dev) | 1UL << VIRTIO_NET_F_HOST_TSO6 | 1UL << VIRTIO_NET_F_GUEST_UFO | 1UL << VIRTIO_NET_F_GUEST_TSO4 - | 1UL << VIRTIO_NET_F_GUEST_TSO6; + | 1UL << VIRTIO_NET_F_GUEST_TSO6 + | 1UL << VIRTIO_NET_F_MULTIQUEUE; } static void set_guest_features(struct kvm *kvm, void *dev, u32 features) { struct net_dev *ndev = dev; + if (features & (1UL << VIRTIO_NET_F_MULTIQUEUE)) + ndev->vq_num = ndev->config.num_queues; + else + ndev->vq_num = 2; + ndev->features = features; } @@ -395,6 +401,8 @@ void virtio_net__ini...

...s(struct kvm *kvm, void *dev) | 1UL << VIRTIO_NET_F_HOST_TSO6 | 1UL << VIRTIO_NET_F_GUEST_UFO | 1UL << VIRTIO_NET_F_GUEST_TSO4 - | 1UL << VIRTIO_NET_F_GUEST_TSO6; + | 1UL << VIRTIO_NET_F_GUEST_TSO6 + | 1UL << VIRTIO_NET_F_MULTIQUEUE; } static void set_guest_features(struct kvm *kvm, void *dev, u32 features) { struct net_dev *ndev = dev; + if (features & (1UL << VIRTIO_NET_F_MULTIQUEUE)) + ndev->vq_num = ndev->config.num_queues; + else + ndev->vq_num = 2; + ndev->features = features; } @@ -395,6 +401,8 @@ void virtio_net__ini...

...URES_SEL: + case VIRTIO_MMIO_QUEUE_SEL: + case VIRTIO_MMIO_STATUS: + val = ioport__read32(data); + *(u32 *)(((void *)&vmmio->hdr) + addr) = val; + break; + case VIRTIO_MMIO_GUEST_FEATURES: + if (vmmio->hdr.guest_features_sel == 0) { + val = ioport__read32(data); + vdev->ops->set_guest_features(vmmio->kvm, + vmmio->dev, val); + } + break; + case VIRTIO_MMIO_GUEST_PAGE_SIZE: + val = ioport__read32(data); + vmmio->hdr.guest_page_size = val; + /* FIXME: set guest page size */ + break; + case VIRTIO_MMIO_QUEUE_NUM: + val = ioport__read32(data); + vmmio->hdr.qu...

...URES_SEL: + case VIRTIO_MMIO_QUEUE_SEL: + case VIRTIO_MMIO_STATUS: + val = ioport__read32(data); + *(u32 *)(((void *)&vmmio->hdr) + addr) = val; + break; + case VIRTIO_MMIO_GUEST_FEATURES: + if (vmmio->hdr.guest_features_sel == 0) { + val = ioport__read32(data); + vdev->ops->set_guest_features(vmmio->kvm, + vmmio->dev, val); + } + break; + case VIRTIO_MMIO_GUEST_PAGE_SIZE: + val = ioport__read32(data); + vmmio->hdr.guest_page_size = val; + /* FIXME: set guest page size */ + break; + case VIRTIO_MMIO_QUEUE_NUM: + val = ioport__read32(data); + vmmio->hdr.qu...

...O_QUEUE_NUM: + case VIRTIO_MMIO_QUEUE_ALIGN: + case VIRTIO_MMIO_STATUS: + *(u32 *)(((void *)&vmmio->hdr) + addr) = ioport__read32(data); + break; + case VIRTIO_MMIO_GUEST_FEATURES: + if (vmmio->hdr.guest_features_sel == 0) { + val = ioport__read32(data); + vtrans->virtio_ops->set_guest_features(vmmio->kvm, vmmio->dev, val); + } + break; + case VIRTIO_MMIO_QUEUE_PFN: + val = ioport__read32(data); + vtrans->virtio_ops->init_vq(vmmio->kvm, vmmio->dev, vmmio->hdr.queue_sel, val); + break; + case VIRTIO_MMIO_QUEUE_NOTIFY: + val = ioport__read32(data); + vtrans-&gt...

...O_QUEUE_NUM: + case VIRTIO_MMIO_QUEUE_ALIGN: + case VIRTIO_MMIO_STATUS: + *(u32 *)(((void *)&vmmio->hdr) + addr) = ioport__read32(data); + break; + case VIRTIO_MMIO_GUEST_FEATURES: + if (vmmio->hdr.guest_features_sel == 0) { + val = ioport__read32(data); + vtrans->virtio_ops->set_guest_features(vmmio->kvm, vmmio->dev, val); + } + break; + case VIRTIO_MMIO_QUEUE_PFN: + val = ioport__read32(data); + vtrans->virtio_ops->init_vq(vmmio->kvm, vmmio->dev, vmmio->hdr.queue_sel, val); + break; + case VIRTIO_MMIO_QUEUE_NOTIFY: + val = ioport__read32(data); + vtrans-&gt...

Hello, This is another iteration of the virtio-pstore work. I've addressed all comments from Daniel Berrange on the qemu side. * changes in v4) - use qio_channel_file_new_path() (Daniel) - rename to delete_old_pstore_file (Daniel) - convert G_REMOVE_SOURCE to FALSE (Daniel) * changes in v3) - use QIOChannel API (Stefan, Daniel) - add bound check for malcious guests

Hello, This is another iteration of the virtio-pstore work. I've addressed all comments from Daniel Berrange on the qemu side. * changes in v4) - use qio_channel_file_new_path() (Daniel) - rename to delete_old_pstore_file (Daniel) - convert G_REMOVE_SOURCE to FALSE (Daniel) * changes in v3) - use QIOChannel API (Stefan, Daniel) - add bound check for malcious guests

Hello, This patchset is a proof of concept of virtio-pstore idea [1]. It has some rough edges and I'm not familiar with this area, so please give me feedbacks and advices if I'm going to a wrong direction. It started from the fact that dumping ftrace buffer at kernel oops/panic takes too much time. Although there's a way to reduce the size of the original data, sometimes I want to

Hello, This patchset is a proof of concept of virtio-pstore idea [1]. It has some rough edges and I'm not familiar with this area, so please give me feedbacks and advices if I'm going to a wrong direction. It started from the fact that dumping ftrace buffer at kernel oops/panic takes too much time. Although there's a way to reduce the size of the original data, sometimes I want to

Hello, This is v2 of the virtio-pstore work. In this patchset I addressed most of feedbacks from previous version. Limiting disk size is not implemented yet. * changes in v2) - update VIRTIO_ID_PSTORE to 22 (Cornelia, Stefan) - make buffer size configurable (Cornelia) - support PSTORE_TYPE_CONSOLE (Kees) - use separate virtqueues for read and write - support concurrent async

Hello, This is v2 of the virtio-pstore work. In this patchset I addressed most of feedbacks from previous version. Limiting disk size is not implemented yet. * changes in v2) - update VIRTIO_ID_PSTORE to 22 (Cornelia, Stefan) - make buffer size configurable (Cornelia) - support PSTORE_TYPE_CONSOLE (Kees) - use separate virtqueues for read and write - support concurrent async

Hello, This is another iteration of the virtio-pstore work. In this patchset I addressed most of feedbacks from previous version and drooped the support for PSTORE_TYPE_CONSOLE for simplicity. It'll be added once the basic implementation * changes in v3) - use QIOChannel API (Stefan, Daniel) - add bound check for malcious guests (Daniel) - drop support PSTORE_TYPE_CONSOLE for now

Hello, This is another iteration of the virtio-pstore work. In this patchset I addressed most of feedbacks from previous version and drooped the support for PSTORE_TYPE_CONSOLE for simplicity. It'll be added once the basic implementation * changes in v3) - use QIOChannel API (Stefan, Daniel) - add bound check for malcious guests (Daniel) - drop support PSTORE_TYPE_CONSOLE for now

This is the initial proposal for a paravirtualized IOMMU device using virtio transport. It contains a description of the device, a Linux driver, and a toy implementation in kvmtool. With this prototype, you can translate DMA to guest memory from emulated (virtio), or passed-through (VFIO) devices. In its simplest form, implemented here, the device handles map/unmap requests from the guest. Future

This is the initial proposal for a paravirtualized IOMMU device using virtio transport. It contains a description of the device, a Linux driver, and a toy implementation in kvmtool. With this prototype, you can translate DMA to guest memory from emulated (virtio), or passed-through (VFIO) devices. In its simplest form, implemented here, the device handles map/unmap requests from the guest. Future