search for: lvq

virtio: Virtio platform driver [PATCH 01/02] virtio: Break out lguest virtio code to virtio_lguest.c [PATCH 02/02] virtio: Add virtio platform driver These patches add a virtio platform driver to the Linux kernel. This platform driver has the same role as the virtio_pci driver, but instead of building on top of emulated PCI this driver is making use of the platform bus together with driver

virtio: Virtio platform driver [PATCH 01/02] virtio: Break out lguest virtio code to virtio_lguest.c [PATCH 02/02] virtio: Add virtio platform driver These patches add a virtio platform driver to the Linux kernel. This platform driver has the same role as the virtio_pci driver, but instead of building on top of emulated PCI this driver is making use of the platform bus together with driver

virtio: Virtio platform driver [PATCH 01/02] virtio: Break out lguest virtio code to virtio_lguest.c [PATCH 02/02] virtio: Add virtio platform driver These patches add a virtio platform driver to the Linux kernel. This platform driver has the same role as the virtio_pci driver, but instead of building on top of emulated PCI this driver is making use of the platform bus together with driver

virtio: Virtio platform driver [PATCH 01/02] virtio: Break out lguest virtio code to virtio_lguest.c [PATCH 02/02] virtio: Add virtio platform driver These patches add a virtio platform driver to the Linux kernel. This platform driver has the same role as the virtio_pci driver, but instead of building on top of emulated PCI this driver is making use of the platform bus together with driver

...b/drivers/lguest/lguest_device.c index e2eec38..cbf90fc 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -200,8 +200,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, /* Figure out how many pages the ring will take, and map that memory */ lvq->pages = lguest_map((unsigned long)lvq->config.pfn << PAGE_SHIFT, - DIV_ROUND_UP(vring_size(lvq->config.num, - PAGE_SIZE), + DIV_ROUND_UP(vring_size(lvq->config.num), PAGE_SIZE)); if (!lvq->pages) { err = -ENOMEM; diff --git a/drivers/virtio/virtio_r...

...b/drivers/lguest/lguest_device.c index e2eec38..cbf90fc 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -200,8 +200,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, /* Figure out how many pages the ring will take, and map that memory */ lvq->pages = lguest_map((unsigned long)lvq->config.pfn << PAGE_SHIFT, - DIV_ROUND_UP(vring_size(lvq->config.num, - PAGE_SIZE), + DIV_ROUND_UP(vring_size(lvq->config.num), PAGE_SIZE)); if (!lvq->pages) { err = -ENOMEM; diff --git a/drivers/virtio/virtio_r...

...rating system is RHEL-3, standard workstation with some additional libraries (e.g., all of the development ones) and packages (e.g., tarball-based installs of R & Octave). Swap was set to twice the RAM. Not sure about how big the R processes are. Under Matlab and using a network version of LVQ, the processes were under 256 MB. It could be a lot larger in R, given that KNN is explicitly used in certain stages of LVQ and that should consume a lot of memory. oMFS is not currently being used, nor any other network filesystem... do you think this would be helpful by allowing the large pro...

...rating system is RHEL-3, standard workstation with some additional libraries (e.g., all of the development ones) and packages (e.g., tarball-based installs of R & Octave). Swap was set to twice the RAM. Not sure about how big the R processes are. Under Matlab and using a network version of LVQ, the processes were under 256 MB. It could be a lot larger in R, given that KNN is explicitly used in certain stages of LVQ and that should consume a lot of memory. oMFS is not currently being used, nor any other network filesystem... do you think this would be helpful by allowing the large pro...

...a "find virtqueue and set it up" function. */ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, + unsigned index, bool (*callback)(struct virtqueue *vq)) { + struct lguest_device *ldev = to_lgdev(vdev); struct lguest_vq_info *lvq; struct virtqueue *vq; - unsigned int len; - void *token; int err; - /* Look for a field of the correct type to mark a virtqueue. Note that - * if this succeeds, then the type will be changed so it won't be found - * again, and future lg_find_vq() calls will find t...

...a "find virtqueue and set it up" function. */ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, + unsigned index, bool (*callback)(struct virtqueue *vq)) { + struct lguest_device *ldev = to_lgdev(vdev); struct lguest_vq_info *lvq; struct virtqueue *vq; - unsigned int len; - void *token; int err; - /* Look for a field of the correct type to mark a virtqueue. Note that - * if this succeeds, then the type will be changed so it won't be found - * again, and future lg_find_vq() calls will find t...

...nter to its pages. + * OK, tell virtio_ring.c to set up a virtqueue now we know its size + * and we've got a pointer to its pages. Note that we set weak_barriers + * to 'true': the host just a(nother) SMP CPU, so we only need inter-cpu + * barriers. */ - vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN, - vdev, lvq->pages, lg_notify, callback, name); + vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN, vdev, + true, lvq->pages, lg_notify, callback, name); if (!vq) { err = -ENOMEM; goto unmap; diff --git a/drivers/s390/kvm/kvm_...

...nter to its pages. + * OK, tell virtio_ring.c to set up a virtqueue now we know its size + * and we've got a pointer to its pages. Note that we set weak_barriers + * to 'true': the host just a(nother) SMP CPU, so we only need inter-cpu + * barriers. */ - vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN, - vdev, lvq->pages, lg_notify, callback, name); + vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN, vdev, + true, lvq->pages, lg_notify, callback, name); if (!vq) { err = -ENOMEM; goto unmap; diff --git a/drivers/s390/kvm/kvm_...

Hi there, We're attempting to run an LVQ analysis over a cluster of machines via R and openMosix. R spawns several child processes simply by writing commands to several files and using system() to start a slave process. The processes migrate perfectly, and often finish with no reported errors, writing their results into respective f...

....c b/drivers/lguest/lguest_device.c index a661bbd..915da6b 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -250,7 +250,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, /* Figure out how many pages the ring will take, and map that memory */ lvq->pages = lguest_map((unsigned long)lvq->config.pfn << PAGE_SHIFT, DIV_ROUND_UP(vring_size(lvq->config.num, - PAGE_SIZE), + LGUEST_VRING_ALIGN), PAGE_SIZE)); if (!lvq->pages) { err = -ENOMEM; @@ -259,8 +259,8 @@ static struct virtqueue *lg_find_vq(s...

....c b/drivers/lguest/lguest_device.c index a661bbd..915da6b 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -250,7 +250,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, /* Figure out how many pages the ring will take, and map that memory */ lvq->pages = lguest_map((unsigned long)lvq->config.pfn << PAGE_SHIFT, DIV_ROUND_UP(vring_size(lvq->config.num, - PAGE_SIZE), + LGUEST_VRING_ALIGN), PAGE_SIZE)); if (!lvq->pages) { err = -ENOMEM; @@ -259,8 +259,8 @@ static struct virtqueue *lg_find_vq(s...

Hi there, We're currently attempting to explain a slowdown of an LVQ-type parallel analysis we're working on. We are benchmarking our analysis running over openMosix against the same running via SNOW for R. Both perform similarly on small datasets, but on large datasets SNOW drastically outperforms openMosix. However, these results are achieve running SNO...

...ction. */ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, unsigned index, - void (*callback)(struct virtqueue *vq)) + void (*callback)(struct virtqueue *vq), + const char *name) { struct lguest_device *ldev = to_lgdev(vdev); struct lguest_vq_info *lvq; @@ -263,7 +264,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, /* OK, tell virtio_ring.c to set up a virtqueue now we know its size * and we've got a pointer to its pages. */ vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN, - vdev, lvq->pages,...

...ction. */ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, unsigned index, - void (*callback)(struct virtqueue *vq)) + void (*callback)(struct virtqueue *vq), + const char *name) { struct lguest_device *ldev = to_lgdev(vdev); struct lguest_vq_info *lvq; @@ -263,7 +264,7 @@ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, /* OK, tell virtio_ring.c to set up a virtqueue now we know its size * and we've got a pointer to its pages. */ vq = vring_new_virtqueue(lvq->config.num, LGUEST_VRING_ALIGN, - vdev, lvq->pages,...

...ueue we're talking about. */ -static void lg_notify(struct virtqueue *vq) +static int lg_notify(struct virtqueue *vq) { /* * We store our virtqueue information in the "priv" pointer of the @@ -238,6 +238,7 @@ static void lg_notify(struct virtqueue *vq) struct lguest_vq_info *lvq = vq->priv; hcall(LHCALL_NOTIFY, lvq->config.pfn << PAGE_SHIFT, 0, 0, 0); + return 0; } /* An extern declaration inside a C file is bad form. Don't do it. */ diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c index b09c75c..39723ee...

Rusty, here is just patch 1 (using bool as return value in notify API). Thanks. Heinz Graalfs (9): virtio_ring: change host notification API virtio_ring: let virtqueue_{kick()/notify()} return a bool virtio_net: verify if virtqueue_kick() succeeded virtio_test: verify if virtqueue_kick() succeeded virtio_ring: add new function virtqueue_is_broken() virtio_blk: verify if queue is