search for: virtio_devic

...n 2020 14:39:24 +0200 > > Pierre Morel <pmorel at linux.ibm.com> wrote: > >> @@ -162,6 +163,11 @@ bool force_dma_unencrypted(struct device *dev) > >> return is_prot_virt_guest(); > >> } > >> > >> +int arch_needs_iommu_platform(struct virtio_device *dev) > > > > Maybe prefixing the name with virtio_ would help provide the > > proper context. > > The virtio_dev makes it obvious and from the virtio side it should be > obvious that the arch is responsible for this. > > However if nobody has something aga...

This used to be a single patch, but I split it into two with the addition of struct Scatterlist. Again a bit new with Rust submissions. I was told by Gary Guo to rebase on top of rust-next, but it seems *very* behind? The first patch does not build on its own due to a dead_code warning. It is hard to not have dead code when one is adding infrastructure to be used by others at a later

...node; /* MSI-X vector (or none) */ - unsigned vector; + unsigned msix_vector; }; /* Qumranet donated their vendor ID for devices 0x1000 thru 0x10FF. */ @@ -280,25 +280,14 @@ static void vp_free_vectors(struct virti vp_dev->msix_entries = NULL; } -static int vp_request_vectors(struct virtio_device *vdev, int nvectors, - bool per_vq_vectors) +static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, + bool per_vq_vectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); const char *name = dev_name(&vp_dev->vdev.dev); unsigned i, v; int...

...node; /* MSI-X vector (or none) */ - unsigned vector; + unsigned msix_vector; }; /* Qumranet donated their vendor ID for devices 0x1000 thru 0x10FF. */ @@ -280,25 +280,14 @@ static void vp_free_vectors(struct virti vp_dev->msix_entries = NULL; } -static int vp_request_vectors(struct virtio_device *vdev, int nvectors, - bool per_vq_vectors) +static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, + bool per_vq_vectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); const char *name = dev_name(&vp_dev->vdev.dev); unsigned i, v; int...

...ko and Vasily don't mind, neither do I. > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -162,6 +163,11 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +int arch_needs_iommu_platform(struct virtio_device *dev) Maybe prefixing the name with virtio_ would help provide the proper context. > +{ > + return is_prot_virt_guest(); > +} > + > /* protected virtualization */ > static void pv_init(void) > { > diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c > ind...

...ko and Vasily don't mind, neither do I. > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -162,6 +163,11 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +int arch_needs_iommu_platform(struct virtio_device *dev) Maybe prefixing the name with virtio_ would help provide the proper context. > +{ > + return is_prot_virt_guest(); > +} > + > /* protected virtualization */ > static void pv_init(void) > { > diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c > ind...

...o.c | 2 +- 10 files changed, 181 insertions(+), 87 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 8f7c956..c9f5627 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -224,7 +224,7 @@ static int virtblk_probe(struct virtio_device *vdev) sg_init_table(vblk->sg, vblk->sg_elems); /* We expect one virtqueue, for output. */ - vblk->vq = vdev->config->find_vq(vdev, 0, blk_done, "requests"); + vblk->vq = virtio_find_single_vq(vdev, blk_done, "requests"); if (IS_ERR(vblk->vq)) {...

...o.c | 2 +- 10 files changed, 181 insertions(+), 87 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 8f7c956..c9f5627 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -224,7 +224,7 @@ static int virtblk_probe(struct virtio_device *vdev) sg_init_table(vblk->sg, vblk->sg_elems); /* We expect one virtqueue, for output. */ - vblk->vq = vdev->config->find_vq(vdev, 0, blk_done, "requests"); + vblk->vq = virtio_find_single_vq(vdev, blk_done, "requests"); if (IS_ERR(vblk->vq)) {...

...++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index ee59b74..fed0ce1 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -13,18 +13,24 @@ static ssize_t device_show(struct device *_d, struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, "0x%04x\n", dev->id.device); } +static DEVICE_ATTR_RO(device); + static ssize_t vendor_show(struct device *_d, struct device_attribute *attr, char *buf) { struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, &...

...++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index ee59b74..fed0ce1 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -13,18 +13,24 @@ static ssize_t device_show(struct device *_d, struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, "0x%04x\n", dev->id.device); } +static DEVICE_ATTR_RO(device); + static ssize_t vendor_show(struct device *_d, struct device_attribute *attr, char *buf) { struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, &...

...++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index ee59b747..fed0ce19 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -13,18 +13,24 @@ static ssize_t device_show(struct device *_d, struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, "0x%04x\n", dev->id.device); } +static DEVICE_ATTR_RO(device); + static ssize_t vendor_show(struct device *_d, struct device_attribute *attr, char *buf) { struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, &...

...++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index ee59b747..fed0ce19 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -13,18 +13,24 @@ static ssize_t device_show(struct device *_d, struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, "0x%04x\n", dev->id.device); } +static DEVICE_ATTR_RO(device); + static ssize_t vendor_show(struct device *_d, struct device_attribute *attr, char *buf) { struct virtio_device *dev = dev_to_virtio(_d); return sprintf(buf, &...

...> >> >> pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); >> >> @@ -162,6 +163,11 @@ bool force_dma_unencrypted(struct device *dev) >> return is_prot_virt_guest(); >> } >> >> +int arch_needs_iommu_platform(struct virtio_device *dev) > > Maybe prefixing the name with virtio_ would help provide the > proper context. The virtio_dev makes it obvious and from the virtio side it should be obvious that the arch is responsible for this. However if nobody has something against I change it. > >> +{ >&gt...

If you like running QEMU as a normal user (very common for TCG runs) but you have to run virtiofsd as a root user you run into connection problems. Adding support for an optional --socket-group allows the users to keep using the command line. Signed-off-by: Alex Benn?e <alex.bennee at linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha at redhat.com> --- v1 - tweak documentation and

Here's the patch series I ended up with. I haven't coded up the QEMU side yet, so no idea if the new driver works. Questions: (1) Do we win from separating ISR, NOTIFY and COMMON? (2) I used a "u8 bar"; should I use a bir and pack it instead? BIR seems a little obscure (noone else in the kernel source seems to refer to it). Cheers, Rusty.

Here's the patch series I ended up with. I haven't coded up the QEMU side yet, so no idea if the new driver works. Questions: (1) Do we win from separating ISR, NOTIFY and COMMON? (2) I used a "u8 bar"; should I use a bir and pack it instead? BIR seems a little obscure (noone else in the kernel source seems to refer to it). Cheers, Rusty.

...ctors */ unsigned msix_vectors; - /* Vectors allocated */ + /* Vectors allocated, excluding per-vq vectors if any */ unsigned msix_used_vectors; + /* Whether we have vector per vq */ + bool per_vq_vectors; }; /* Constants for MSI-X */ @@ -278,27 +280,24 @@ static void vp_free_vectors(struct virtio_device *vdev) vp_dev->msix_entries = NULL; } -static int vp_enable_msix(struct pci_dev *dev, struct msix_entry *entries, - int *options, int noptions) -{ - int i; - for (i = 0; i < noptions; ++i) - if (!pci_enable_msix(dev, entries, options[i])) - return options[i]; - return -EBUSY; -}...

...ctors */ unsigned msix_vectors; - /* Vectors allocated */ + /* Vectors allocated, excluding per-vq vectors if any */ unsigned msix_used_vectors; + /* Whether we have vector per vq */ + bool per_vq_vectors; }; /* Constants for MSI-X */ @@ -278,27 +280,24 @@ static void vp_free_vectors(struct virtio_device *vdev) vp_dev->msix_entries = NULL; } -static int vp_enable_msix(struct pci_dev *dev, struct msix_entry *entries, - int *options, int noptions) -{ - int i; - for (i = 0; i < noptions; ++i) - if (!pci_enable_msix(dev, entries, options[i])) - return options[i]; - return -EBUSY; -}...

This patch series resurrects the earlier multiple TX/RX queues functionality for virtio_net, and addresses the issues pointed out. It also includes an API to share irq's, f.e. amongst the TX vqs. I plan to run TCP/UDP STREAM and RR tests for local->host and local->remote, and send the results in the next couple of days. patch #1: Introduce VIRTIO_NET_F_MULTIQUEUE patch #2: Move

This patch series resurrects the earlier multiple TX/RX queues functionality for virtio_net, and addresses the issues pointed out. It also includes an API to share irq's, f.e. amongst the TX vqs. I plan to run TCP/UDP STREAM and RR tests for local->host and local->remote, and send the results in the next couple of days. patch #1: Introduce VIRTIO_NET_F_MULTIQUEUE patch #2: Move