search for: 444,13

...(vhost_get_avail_size); -static size_t vhost_get_used_size(struct vhost_virtqueue *vq, - unsigned int num) +size_t vhost_get_used_size(struct vhost_virtqueue *vq, unsigned int num) { size_t event __maybe_unused = vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0; @@ -445,12 +444,13 @@ static size_t vhost_get_used_size(struct vhost_virtqueue *vq, return sizeof(*vq->used) + sizeof(*vq->used->ring) * num + event; } +EXPORT_SYMBOL_GPL(vhost_get_used_size); -static size_t vhost_get_desc_size(struct vhost_virtqueue *vq, - unsigned int num) +size_t vho...

...clude <linux/module.h> +#include <linux/moduleparam.h> #include <linux/mutex.h> #include <linux/workqueue.h> #include <linux/rcupdate.h> @@ -28,10 +29,18 @@ #include "vhost.h" +static int experimental_zcopytx; +module_param(experimental_zcopytx, int, 0444); +MODULE_PARM_DESC(experimental_zcopytx, "Enable Experimental Zero Copy TX"); + /* Max number of bytes transferred before requeueing the job. * Using this limit prevents one virtqueue from starving others. */ #define VHOST_NET_WEIGHT 0x80000 +/* MAX number of TX used buffers for ou...

...clude <linux/module.h> +#include <linux/moduleparam.h> #include <linux/mutex.h> #include <linux/workqueue.h> #include <linux/rcupdate.h> @@ -28,10 +29,18 @@ #include "vhost.h" +static int experimental_zcopytx; +module_param(experimental_zcopytx, int, 0444); +MODULE_PARM_DESC(experimental_zcopytx, "Enable Experimental Zero Copy TX"); + /* Max number of bytes transferred before requeueing the job. * Using this limit prevents one virtqueue from starving others. */ #define VHOST_NET_WEIGHT 0x80000 +/* MAX number of TX used buffers for ou...

...size_t vhost_get_used_size(struct vhost_virtqueue *vq, > - unsigned int num) > +size_t vhost_get_used_size(struct vhost_virtqueue *vq, unsigned int num) > { > size_t event __maybe_unused = > vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0; > @@ -445,12 +444,13 @@ static size_t vhost_get_used_size(struct vhost_virtqueue *vq, > return sizeof(*vq->used) + > sizeof(*vq->used->ring) * num + event; > } > +EXPORT_SYMBOL_GPL(vhost_get_used_size); > > -static size_t vhost_get_desc_size(struct vhost_virtqueue *vq, &g...

This RFC is to demonstrate below ideas, a) Build vhost-mdev on top of the same abstraction defined in the virtio-mdev series [1]; b) Introduce /dev/vhost-mdev to do vhost ioctls and support setting mdev device as backend; Now the userspace API looks like this: - Userspace generates a compatible mdev device; - Userspace opens this mdev device with VFIO API (including doing IOMMU

This RFC is to demonstrate below ideas, a) Build vhost-mdev on top of the same abstraction defined in the virtio-mdev series [1]; b) Introduce /dev/vhost-mdev to do vhost ioctls and support setting mdev device as backend; Now the userspace API looks like this: - Userspace generates a compatible mdev device; - Userspace opens this mdev device with VFIO API (including doing IOMMU

...out_vq->vq_ops->add_buf(out_vq, sg, 1, 0, buf); + sg_init_one(sg, in_buf, in_count); + ret = out_vq->vq_ops->add_buf(out_vq, sg, 1, 0, in_buf); /* Tell Host to go! */ out_vq->vq_ops->kick(out_vq); if (ret < 0) { - buf->len = 0; + len = 0; goto fail; } @@ -444,13 +421,11 @@ static ssize_t send_buf(struct port *port, const char *in_buf, size_t in_count, * sent. Also ensure we return to userspace the number of * bytes that were successfully consumed by the host. */ - while (!out_vq->vq_ops->get_buf(out_vq, &tmplen)) + while (!out_vq->...

...out_vq->vq_ops->add_buf(out_vq, sg, 1, 0, buf); + sg_init_one(sg, in_buf, in_count); + ret = out_vq->vq_ops->add_buf(out_vq, sg, 1, 0, in_buf); /* Tell Host to go! */ out_vq->vq_ops->kick(out_vq); if (ret < 0) { - buf->len = 0; + len = 0; goto fail; } @@ -444,13 +421,11 @@ static ssize_t send_buf(struct port *port, const char *in_buf, size_t in_count, * sent. Also ensure we return to userspace the number of * bytes that were successfully consumed by the host. */ - while (!out_vq->vq_ops->get_buf(out_vq, &tmplen)) + while (!out_vq->...

Aiming these for coming merge window. Nothing should change, but get ready for a non-guest-endian config transports, and > 32 features bits. Final one is just an overdue consolidation. Cheers, Rusty. Rusty Russell (7): virtio_config: introduce size-based accessors. virtio: use size-based config accessors. virtio_config: helpers for non-converting accessors. virtio_config: make

Aiming these for coming merge window. Nothing should change, but get ready for a non-guest-endian config transports, and > 32 features bits. Final one is just an overdue consolidation. Cheers, Rusty. Rusty Russell (7): virtio_config: introduce size-based accessors. virtio: use size-based config accessors. virtio_config: helpers for non-converting accessors. virtio_config: make

...om libnbd when any read command finishes. */ static int -finished_read (unsigned valid_flag, void *vp, int *error) +finished_read (void *vp, int *error) { struct buffer *buffer = vp; - if (!(valid_flag & LIBNBD_CALLBACK_VALID)) - return 0; - if (gssrc == NULL) return 0; @@ -444,13 +441,10 @@ write_data (gpointer user_data) /* This callback is called from libnbd when any write command finishes. */ static int -finished_write (unsigned valid_flag, void *vp, int *error) +finished_write (void *vp, int *error) { struct buffer *buffer = vp; - if (!(valid_flag & LI...

Hi Andi, This series of patches updates paravirt_ops in various ways. Some of the changes are plain cleanups and improvements, and some add some interfaces necessary for Xen. The brief overview: add-MAINTAINERS.patch - obvious remove-CONFIG_DEBUG_PARAVIRT.patch - no longer needed paravirt-nop.patch - mark nop operations consistently paravirt-pte-accessors.patch - operations to pack/unpack

Hi Andi, This series of patches updates paravirt_ops in various ways. Some of the changes are plain cleanups and improvements, and some add some interfaces necessary for Xen. The brief overview: add-MAINTAINERS.patch - obvious remove-CONFIG_DEBUG_PARAVIRT.patch - no longer needed paravirt-nop.patch - mark nop operations consistently paravirt-pte-accessors.patch - operations to pack/unpack

Hi Andi, Here's a repost of the paravirt_ops update series I posted the other day. Since then, I found a few potential bugs with patching clobbering, cleaned up and documented paravirt.h and the patching machinery. Overview: add-MAINTAINERS.patch obvious remove-CONFIG_DEBUG_PARAVIRT.patch No longer meaningful or needed. paravirt-nop.patch Clean up nop paravirt_ops functions, mainly to

Hi Andi, Here's a repost of the paravirt_ops update series I posted the other day. Since then, I found a few potential bugs with patching clobbering, cleaned up and documented paravirt.h and the patching machinery. Overview: add-MAINTAINERS.patch obvious remove-CONFIG_DEBUG_PARAVIRT.patch No longer meaningful or needed. paravirt-nop.patch Clean up nop paravirt_ops functions, mainly to

Patches 1 & 2 are rather complex, but the end result is that we pass closures + user_data + free function in single struct parameters as I described previously in this email: https://www.redhat.com/archives/libguestfs/2019-August/msg00210.html Patch 3 adds a convenient FREE_CALLBACK macro which seems a worthwhile simplification if you buy into 1 & 2. Patch 4 adds another macro which is

v15->v16: - Remove the lfsr patch and use linear probing as lfsr is not really necessary in most cases. - Move the paravirt PV_CALLEE_SAVE_REGS_THUNK code to an asm header. - Add a patch to collect PV qspinlock statistics which also supersedes the PV lock hash debug patch. - Add PV qspinlock performance numbers. v14->v15: - Incorporate PeterZ's v15 qspinlock patch and improve

v15->v16: - Remove the lfsr patch and use linear probing as lfsr is not really necessary in most cases. - Move the paravirt PV_CALLEE_SAVE_REGS_THUNK code to an asm header. - Add a patch to collect PV qspinlock statistics which also supersedes the PV lock hash debug patch. - Add PV qspinlock performance numbers. v14->v15: - Incorporate PeterZ's v15 qspinlock patch and improve

I've renewed this again, with some comments from HPA. I've tried to keep the new patches separate, so you can see the changes since we last discussed this (and so it's easy to back it out if we decide it's insane). I haven't even looked at the QEMU side so this is completely untested. Comments gratefully received! Rusty. Michael S Tsirkin (1): pci: add pci_iomap_range

I've renewed this again, with some comments from HPA. I've tried to keep the new patches separate, so you can see the changes since we last discussed this (and so it's easy to back it out if we decide it's insane). I haven't even looked at the QEMU side so this is completely untested. Comments gratefully received! Rusty. Michael S Tsirkin (1): pci: add pci_iomap_range