search for: vhost_memory_max_nregions

...st/vhost.c b/drivers/vhost/vhost.c index 9e8e004..3b68f9d 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) long r; int i, fd; + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { + r = VHOST_MEMORY_MAX_NREGIONS; + goto done; + } + /* If you are not the owner, you can become one */ if (ioctl == VHOST_SET_OWNER) { r = vhost_dev_set_owner(d); -- MST

...st/vhost.c b/drivers/vhost/vhost.c index 9e8e004..3b68f9d 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) long r; int i, fd; + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { + r = VHOST_MEMORY_MAX_NREGIONS; + goto done; + } + /* If you are not the owner, you can become one */ if (ioctl == VHOST_SET_OWNER) { r = vhost_dev_set_owner(d); -- MST

.../drivers/vhost/vhost.c > > +++ b/drivers/vhost/vhost.c > > @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) > > long r; > > int i, fd; > > > > + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { > > + r = VHOST_MEMORY_MAX_NREGIONS; > > + goto done; > > + } > > + > > /* If you are not the owner, you can become one */ > > if (ioctl == VHOST_SET_OWNER) { > > r = vhost_dev_set_owner(d);

.../drivers/vhost/vhost.c > > +++ b/drivers/vhost/vhost.c > > @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) > > long r; > > int i, fd; > > > > + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { > > + r = VHOST_MEMORY_MAX_NREGIONS; > > + goto done; > > + } > > + > > /* If you are not the owner, you can become one */ > > if (ioctl == VHOST_SET_OWNER) { > > r = vhost_dev_set_owner(d);

...> > > > @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) > > > > long r; > > > > int i, fd; > > > > > > > > + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { > > > > + r = VHOST_MEMORY_MAX_NREGIONS; > > > > + goto done; > > > > + } > > > > + > > > > /* If you are not the owner, you can become one */ > > > > if (ioctl == VHOST_SET_OWNER) { > > > > r = vhost_dev_set_owner(d); > > -- > > To unsubscribe fr...

...> > > > @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) > > > > long r; > > > > int i, fd; > > > > > > > > + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { > > > > + r = VHOST_MEMORY_MAX_NREGIONS; > > > > + goto done; > > > > + } > > > > + > > > > /* If you are not the owner, you can become one */ > > > > if (ioctl == VHOST_SET_OWNER) { > > > > r = vhost_dev_set_owner(d); > > -- > > To unsubscribe fr...

...resources into potential holes > because VM2 does not know where those holes will be. > I think you can allocate such guest-physical address ranges efficiently if each BAR sets the base of each memory region reported by VHOST_SET_MEM_TABLE, for example. The issue is that we would need to 8 (VHOST_MEMORY_MAX_NREGIONS) of them vs. 6 (defined by PCI-SIG). -- Jun Intel Open Source Technology Center

...> because VM2 does not know where those holes will be. > > > > I think you can allocate such guest-physical address ranges > efficiently if each BAR sets the base of each memory region reported > by VHOST_SET_MEM_TABLE, for example. The issue is that we would need > to 8 (VHOST_MEMORY_MAX_NREGIONS) of them vs. 6 (defined by PCI-SIG). Besides, 8 is not even a limit: we merged a patch that allows makeing it larger. > -- > Jun > Intel Open Source Technology Center

...> because VM2 does not know where those holes will be. > > > > I think you can allocate such guest-physical address ranges > efficiently if each BAR sets the base of each memory region reported > by VHOST_SET_MEM_TABLE, for example. The issue is that we would need > to 8 (VHOST_MEMORY_MAX_NREGIONS) of them vs. 6 (defined by PCI-SIG). Besides, 8 is not even a limit: we merged a patch that allows makeing it larger. > -- > Jun > Intel Open Source Technology Center

...9e8e004..3b68f9d 100644 > --- a/drivers/vhost/vhost.c > +++ b/drivers/vhost/vhost.c > @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) > long r; > int i, fd; > > + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { > + r = VHOST_MEMORY_MAX_NREGIONS; > + goto done; > + } > + > /* If you are not the owner, you can become one */ > if (ioctl == VHOST_SET_OWNER) { > r = vhost_dev_set_owner(d);

...t; +++ b/drivers/vhost/vhost.c > > > @@ -917,6 +917,11 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) > > > long r; > > > int i, fd; > > > > > > + if (ioctl == VHOST_GET_MEM_MAX_NREGIONS) { > > > + r = VHOST_MEMORY_MAX_NREGIONS; > > > + goto done; > > > + } > > > + > > > /* If you are not the owner, you can become one */ > > > if (ioctl == VHOST_SET_OWNER) { > > > r = vhost_dev_set_owner(d); > -- > To unsubscribe from this list: send the line "unsubs...

On 2015-09-01 18:02, Michael S. Tsirkin wrote: > On Tue, Sep 01, 2015 at 05:34:37PM +0200, Jan Kiszka wrote: >> On 2015-09-01 16:34, Michael S. Tsirkin wrote: >>> On Tue, Sep 01, 2015 at 04:09:44PM +0200, Jan Kiszka wrote: >>>> On 2015-09-01 11:24, Michael S. Tsirkin wrote: >>>>> On Tue, Sep 01, 2015 at 11:11:52AM +0200, Jan Kiszka wrote:

On 2015-09-01 18:02, Michael S. Tsirkin wrote: > On Tue, Sep 01, 2015 at 05:34:37PM +0200, Jan Kiszka wrote: >> On 2015-09-01 16:34, Michael S. Tsirkin wrote: >>> On Tue, Sep 01, 2015 at 04:09:44PM +0200, Jan Kiszka wrote: >>>> On 2015-09-01 11:24, Michael S. Tsirkin wrote: >>>>> On Tue, Sep 01, 2015 at 11:11:52AM +0200, Jan Kiszka wrote:

...lt;linux/rcupdate.h> +#include <linux/poll.h> +#include <linux/file.h> + +#include <linux/net.h> +#include <linux/if_packet.h> +#include <linux/if_arp.h> + +#include <net/sock.h> + +#include <asm/mmu_context.h> + +#include "vhost.h" + +enum { + VHOST_MEMORY_MAX_NREGIONS = 64, +}; + +struct workqueue_struct *vhost_workqueue; + +static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh, + poll_table *pt) +{ + struct vhost_poll *poll; + poll = container_of(pt, struct vhost_poll, table); + + poll->wqh = wqh; + add_wait_queue(wqh, &poll->wai...

...lt;linux/rcupdate.h> +#include <linux/poll.h> +#include <linux/file.h> + +#include <linux/net.h> +#include <linux/if_packet.h> +#include <linux/if_arp.h> + +#include <net/sock.h> + +#include <asm/mmu_context.h> + +#include "vhost.h" + +enum { + VHOST_MEMORY_MAX_NREGIONS = 64, +}; + +struct workqueue_struct *vhost_workqueue; + +static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh, + poll_table *pt) +{ + struct vhost_poll *poll; + poll = container_of(pt, struct vhost_poll, table); + + poll->wqh = wqh; + add_wait_queue(wqh, &poll->wai...

...<linux/workqueue.h> +#include <linux/rcupdate.h> +#include <linux/poll.h> +#include <linux/file.h> + +#include <linux/net.h> +#include <linux/if_packet.h> +#include <linux/if_arp.h> + +#include <net/sock.h> + +#include "vhost.h" + +enum { + VHOST_MEMORY_MAX_NREGIONS = 64, +}; + +static struct workqueue_struct *vhost_workqueue; + +static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh, + poll_table *pt) +{ + struct vhost_poll *poll; + poll = container_of(pt, struct vhost_poll, table); + + poll->wqh = wqh; + add_wait_queue(wqh, &poll-...

...<linux/workqueue.h> +#include <linux/rcupdate.h> +#include <linux/poll.h> +#include <linux/file.h> + +#include <linux/net.h> +#include <linux/if_packet.h> +#include <linux/if_arp.h> + +#include <net/sock.h> + +#include "vhost.h" + +enum { + VHOST_MEMORY_MAX_NREGIONS = 64, +}; + +static struct workqueue_struct *vhost_workqueue; + +static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh, + poll_table *pt) +{ + struct vhost_poll *poll; + poll = container_of(pt, struct vhost_poll, table); + + poll->wqh = wqh; + add_wait_queue(wqh, &poll-...

To help in vhost analyzing, the following series adding basic tracepoints to vhost. Operations of both virtqueues and vhost works were traced in current implementation, net code were untouched. A top-like satistics displaying script were introduced to help the troubleshooting. TODO: - net specific tracepoints? --- Jason Wang (2): vhost: basic tracepoints tools: virtio: add a

To help in vhost analyzing, the following series adding basic tracepoints to vhost. Operations of both virtqueues and vhost works were traced in current implementation, net code were untouched. A top-like satistics displaying script were introduced to help the troubleshooting. TODO: - net specific tracepoints? --- Jason Wang (2): vhost: basic tracepoints tools: virtio: add a

...lt;linux/rcupdate.h> +#include <linux/poll.h> +#include <linux/file.h> + +#include <linux/net.h> +#include <linux/if_packet.h> +#include <linux/if_arp.h> + +#include <net/sock.h> + +#include <asm/mmu_context.h> + +#include "vhost.h" + +enum { + VHOST_MEMORY_MAX_NREGIONS = 64, +}; + +static struct workqueue_struct *vhost_workqueue; + +static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh, + poll_table *pt) +{ + struct vhost_poll *poll; + poll = container_of(pt, struct vhost_poll, table); + + poll->wqh = wqh; + add_wait_queue(wqh, &poll-...