search for: features_hi

...features(struct ifcvf_hw *hw) +/* return provisioned vDPA dev features */ +u64 ifcvf_get_dev_features(struct ifcvf_hw *hw) { return hw->dev_features; } +u64 ifcvf_get_driver_features(struct ifcvf_hw *hw) +{ + struct virtio_pci_common_cfg __iomem *cfg = hw->common_cfg; + u32 features_lo, features_hi; + u64 features; + + vp_iowrite32(0, &cfg->device_feature_select); + features_lo = vp_ioread32(&cfg->guest_feature); + + vp_iowrite32(1, &cfg->device_feature_select); + features_hi = vp_ioread32(&cfg->guest_feature); + + features = ((u64)features_hi << 32) | featur...

...dev); diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c index 4fb5b2b..2a2ee72 100644 --- a/drivers/virtio/virtio_pci.c +++ b/drivers/virtio/virtio_pci.c @@ -44,6 +44,8 @@ struct virtio_pci_device spinlock_t lock; struct list_head virtqueues; + /* 64 bit features */ + int features_hi; /* MSI-X support */ int msix_enabled; int intx_enabled; @@ -103,26 +105,45 @@ static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev) } /* virtio config->get_features() implementation */ -static u32 vp_get_features(struct virtio_device *vdev) +static u64 vp_get_featu...

...dev); diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c index 4fb5b2b..2a2ee72 100644 --- a/drivers/virtio/virtio_pci.c +++ b/drivers/virtio/virtio_pci.c @@ -44,6 +44,8 @@ struct virtio_pci_device spinlock_t lock; struct list_head virtqueues; + /* 64 bit features */ + int features_hi; /* MSI-X support */ int msix_enabled; int intx_enabled; @@ -103,26 +105,45 @@ static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev) } /* virtio config->get_features() implementation */ -static u32 vp_get_features(struct virtio_device *vdev) +static u64 vp_get_featu...

...features(struct ifcvf_hw *hw) +/* return provisioned vDPA dev features */ +u64 ifcvf_get_dev_features(struct ifcvf_hw *hw) { return hw->dev_features; } +u64 ifcvf_get_driver_features(struct ifcvf_hw *hw) +{ + struct virtio_pci_common_cfg __iomem *cfg = hw->common_cfg; + u32 features_lo, features_hi; + u64 features; + + vp_iowrite32(0, &cfg->device_feature_select); + features_lo = vp_ioread32(&cfg->guest_feature); + + vp_iowrite32(1, &cfg->device_feature_select); + features_hi = vp_ioread32(&cfg->guest_feature); + + features = ((u64)features_hi << 32) | featur...

...+{ > + if (status != 0) > + status |= ifcvf_get_status(hw); > + > + ifcvf_set_status(hw, status); > + ifcvf_get_status(hw); > +} > + > +u64 ifcvf_get_features(struct ifcvf_hw *hw) > +{ > + struct virtio_pci_common_cfg *cfg = hw->common_cfg; > + u32 features_lo, features_hi; > + > + iowrite32(0, &cfg->device_feature_select); > + features_lo = ioread32(&cfg->device_feature); > + > + iowrite32(1, &cfg->device_feature_select); > + features_hi = ioread32(&cfg->device_feature); > + > + return ((u64)features_hi << 32...

...+{ > + if (status != 0) > + status |= ifcvf_get_status(hw); > + > + ifcvf_set_status(hw, status); > + ifcvf_get_status(hw); > +} > + > +u64 ifcvf_get_features(struct ifcvf_hw *hw) > +{ > + struct virtio_pci_common_cfg *cfg = hw->common_cfg; > + u32 features_lo, features_hi; > + > + iowrite32(0, &cfg->device_feature_select); > + features_lo = ioread32(&cfg->device_feature); > + > + iowrite32(1, &cfg->device_feature_select); > + features_hi = ioread32(&cfg->device_feature); > + > + return ((u64)features_hi << 32...

...+{ > + if (status != 0) > + status |= ifcvf_get_status(hw); > + > + ifcvf_set_status(hw, status); > + ifcvf_get_status(hw); > +} > + > +u64 ifcvf_get_features(struct ifcvf_hw *hw) > +{ > + struct virtio_pci_common_cfg *cfg = hw->common_cfg; > + u32 features_lo, features_hi; > + > + iowrite32(0, &cfg->device_feature_select); > + features_lo = ioread32(&cfg->device_feature); > + > + iowrite32(1, &cfg->device_feature_select); > + features_hi = ioread32(&cfg->device_feature); > + > + return ((u64)features_hi << 32...

...+{ > + if (status != 0) > + status |= ifcvf_get_status(hw); > + > + ifcvf_set_status(hw, status); > + ifcvf_get_status(hw); > +} > + > +u64 ifcvf_get_features(struct ifcvf_hw *hw) > +{ > + struct virtio_pci_common_cfg *cfg = hw->common_cfg; > + u32 features_lo, features_hi; > + > + iowrite32(0, &cfg->device_feature_select); > + features_lo = ioread32(&cfg->device_feature); > + > + iowrite32(1, &cfg->device_feature_select); > + features_hi = ioread32(&cfg->device_feature); > + > + return ((u64)features_hi << 32...

...tic void ifcvf_add_status(struct ifcvf_hw *hw, u8 status) > +{ > + if (status != 0) > + status |= ifcvf_get_status(hw); > + > + ifcvf_set_status(hw, status); > + ifcvf_get_status(hw); > +} > + > +u64 ifcvf_get_features(struct ifcvf_hw *hw) > +{ > + u32 features_lo, features_hi; > + struct virtio_pci_common_cfg *cfg = hw->common_cfg; > + > + iowrite32(0, &cfg->device_feature_select); > + features_lo = ioread32(&cfg->device_feature); > + > + iowrite32(1, &cfg->device_feature_select); > + features_hi = ioread32(&cfg->devic...

...0) >>> +??????? status |= ifcvf_get_status(hw); >>> + >>> +??? ifcvf_set_status(hw, status); >>> +??? ifcvf_get_status(hw); >>> +} >>> + >>> +u64 ifcvf_get_features(struct ifcvf_hw *hw) >>> +{ >>> +??? u32 features_lo, features_hi; >>> +??? struct virtio_pci_common_cfg *cfg = hw->common_cfg; >>> + >>> +??? iowrite32(0, &cfg->device_feature_select); >>> +??? features_lo = ioread32(&cfg->device_feature); >>> + >>> +??? iowrite32(1, &cfg->device_featu...

Formerly, ifcvf driver has implemented a lazy-initialization mechanism for the virtqueues and other config space contents, it would store all configurations that passed down from the userspace, then load them to the device config space upon DRIVER_OK. This can not serve live migration, so this series implement an immediate initialization mechanism, which means rather than the former store-load

Formerly, ifcvf driver has implemented a lazy-initialization mechanism for the virtqueues and other config space contents, it would store all configurations that passed down from the userspace, then load them to the device config space upon DRIVER_OK. This can not serve live migration, so this series implement an immediate initialization mechanism, which means rather than the former store-load

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. If you see issues or are just curious, you can turn the new feature off. For example: -global virtio-net-pci.event_idx=on -global virtio-blk-pci.event_idx=off Also, it's possible to try both

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. If you see issues or are just curious, you can turn the new feature off. For example: -global virtio-net-pci.event_idx=on -global virtio-blk-pci.event_idx=off Also, it's possible to try both

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. I see nice performance improvements: e.g. from 12 to 18 Gbit/s host to guest with netperf, but did not spend a lot of time testing performance. I hope others will try this out and report. Note: there

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. I see nice performance improvements: e.g. from 12 to 18 Gbit/s host to guest with netperf, but did not spend a lot of time testing performance. I hope others will try this out and report. Note: there

OK, here is the large patchset that implements the virtio spec update that I sent earlier (the spec itself needs a minor update, will send that out too next week, but I think we are on the same page here already). It supercedes the PUBLISH_USED_IDX patches I sent out earlier. What will follow will be a patchset that actually includes 4 sets of patches. I note below their status. Please consider

OK, here is the large patchset that implements the virtio spec update that I sent earlier (the spec itself needs a minor update, will send that out too next week, but I think we are on the same page here already). It supercedes the PUBLISH_USED_IDX patches I sent out earlier. What will follow will be a patchset that actually includes 4 sets of patches. I note below their status. Please consider

OK, here's a large patchset that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. I know it's a lot to ask but please test, and please consider for 2.6.40 :) I see nice performance improvements: one run showed going from 12 to 18 Gbit/s host to guest with netperf, but I did not spend a lot of time testing performance,

OK, here's a large patchset that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. I know it's a lot to ask but please test, and please consider for 2.6.40 :) I see nice performance improvements: one run showed going from 12 to 18 Gbit/s host to guest with netperf, but I did not spend a lot of time testing performance,