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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-24 16:46:45 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-24 16:46:45 (GMT) |
commit | ecaba7185894778c24895356d117a7f92e3c92de (patch) | |
tree | 03567db9d31a453f4262c923c9717e4d394e6881 /drivers | |
parent | e989cc564691901d42e957059592fe3e7b6893fc (diff) | |
parent | bb991288728e6a47a6f0fac6a4e9dfaeecc27956 (diff) | |
download | linux-ecaba7185894778c24895356d117a7f92e3c92de.tar.xz |
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio updates from Michael Tsirkin:
"Looks like a quiet cycle for virtio. There's a new inorder option for
the ringtest tool, and a bugfix for balloon for ppc platforms when
using virtio 1 mode"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
ringtest: pass buf != NULL
virtio_balloon: fix PFN format for virtio-1
virtio: add inorder option
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/virtio/virtio_balloon.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 7b6d74f..476c0e3 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -75,7 +75,7 @@ struct virtio_balloon { /* The array of pfns we tell the Host about. */ unsigned int num_pfns; - u32 pfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX]; + __virtio32 pfns[VIRTIO_BALLOON_ARRAY_PFNS_MAX]; /* Memory statistics */ struct virtio_balloon_stat stats[VIRTIO_BALLOON_S_NR]; @@ -127,14 +127,16 @@ static void tell_host(struct virtio_balloon *vb, struct virtqueue *vq) } -static void set_page_pfns(u32 pfns[], struct page *page) +static void set_page_pfns(struct virtio_balloon *vb, + __virtio32 pfns[], struct page *page) { unsigned int i; /* Set balloon pfns pointing at this page. * Note that the first pfn points at start of the page. */ for (i = 0; i < VIRTIO_BALLOON_PAGES_PER_PAGE; i++) - pfns[i] = page_to_balloon_pfn(page) + i; + pfns[i] = cpu_to_virtio32(vb->vdev, + page_to_balloon_pfn(page) + i); } static unsigned fill_balloon(struct virtio_balloon *vb, size_t num) @@ -158,7 +160,7 @@ static unsigned fill_balloon(struct virtio_balloon *vb, size_t num) msleep(200); break; } - set_page_pfns(vb->pfns + vb->num_pfns, page); + set_page_pfns(vb, vb->pfns + vb->num_pfns, page); vb->num_pages += VIRTIO_BALLOON_PAGES_PER_PAGE; if (!virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_DEFLATE_ON_OOM)) @@ -177,10 +179,12 @@ static unsigned fill_balloon(struct virtio_balloon *vb, size_t num) static void release_pages_balloon(struct virtio_balloon *vb) { unsigned int i; + struct page *page; /* Find pfns pointing at start of each page, get pages and free them. */ for (i = 0; i < vb->num_pfns; i += VIRTIO_BALLOON_PAGES_PER_PAGE) { - struct page *page = balloon_pfn_to_page(vb->pfns[i]); + page = balloon_pfn_to_page(virtio32_to_cpu(vb->vdev, + vb->pfns[i])); if (!virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_DEFLATE_ON_OOM)) adjust_managed_page_count(page, 1); @@ -203,7 +207,7 @@ static unsigned leak_balloon(struct virtio_balloon *vb, size_t num) page = balloon_page_dequeue(vb_dev_info); if (!page) break; - set_page_pfns(vb->pfns + vb->num_pfns, page); + set_page_pfns(vb, vb->pfns + vb->num_pfns, page); vb->num_pages -= VIRTIO_BALLOON_PAGES_PER_PAGE; } @@ -471,13 +475,13 @@ static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info, __count_vm_event(BALLOON_MIGRATE); spin_unlock_irqrestore(&vb_dev_info->pages_lock, flags); vb->num_pfns = VIRTIO_BALLOON_PAGES_PER_PAGE; - set_page_pfns(vb->pfns, newpage); + set_page_pfns(vb, vb->pfns, newpage); tell_host(vb, vb->inflate_vq); /* balloon's page migration 2nd step -- deflate "page" */ balloon_page_delete(page); vb->num_pfns = VIRTIO_BALLOON_PAGES_PER_PAGE; - set_page_pfns(vb->pfns, page); + set_page_pfns(vb, vb->pfns, page); tell_host(vb, vb->deflate_vq); mutex_unlock(&vb->balloon_lock); |