diff options
| -rw-r--r-- | drivers/block/virtio_blk.c | 6 | ||||
| -rw-r--r-- | drivers/virtio/virtio_balloon.c | 16 | ||||
| -rw-r--r-- | drivers/virtio/virtio_mmio.c | 10 |
3 files changed, 23 insertions, 9 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index d4d05f064d39..e93899cc6f60 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -478,8 +478,7 @@ static int virtblk_get_cache_mode(struct virtio_device *vdev) struct virtio_blk_config, wce, &writeback); if (err) - writeback = virtio_has_feature(vdev, VIRTIO_BLK_F_WCE) || - virtio_has_feature(vdev, VIRTIO_F_VERSION_1); + writeback = virtio_has_feature(vdev, VIRTIO_BLK_F_WCE); return writeback; } @@ -657,6 +656,7 @@ static int virtblk_probe(struct virtio_device *vdev) vblk->disk->private_data = vblk; vblk->disk->fops = &virtblk_fops; vblk->disk->driverfs_dev = &vdev->dev; + vblk->disk->flags |= GENHD_FL_EXT_DEVT; vblk->index = index; /* configure queue flush support */ @@ -840,7 +840,7 @@ static unsigned int features_legacy[] = { static unsigned int features[] = { VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX, VIRTIO_BLK_F_GEOMETRY, VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE, - VIRTIO_BLK_F_TOPOLOGY, + VIRTIO_BLK_F_WCE, VIRTIO_BLK_F_TOPOLOGY, VIRTIO_BLK_F_CONFIG_WCE, VIRTIO_BLK_F_MQ, }; diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 82e80e034f25..7efc32945810 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -157,7 +157,9 @@ static void fill_balloon(struct virtio_balloon *vb, size_t num) } set_page_pfns(vb->pfns + vb->num_pfns, page); vb->num_pages += VIRTIO_BALLOON_PAGES_PER_PAGE; - adjust_managed_page_count(page, -1); + if (!virtio_has_feature(vb->vdev, + VIRTIO_BALLOON_F_DEFLATE_ON_OOM)) + adjust_managed_page_count(page, -1); } /* Did we get any? */ @@ -166,14 +168,16 @@ static void fill_balloon(struct virtio_balloon *vb, size_t num) mutex_unlock(&vb->balloon_lock); } -static void release_pages_by_pfn(const u32 pfns[], unsigned int num) +static void release_pages_balloon(struct virtio_balloon *vb) { unsigned int i; /* Find pfns pointing at start of each page, get pages and free them. */ - for (i = 0; i < num; i += VIRTIO_BALLOON_PAGES_PER_PAGE) { - struct page *page = balloon_pfn_to_page(pfns[i]); - adjust_managed_page_count(page, 1); + for (i = 0; i < vb->num_pfns; i += VIRTIO_BALLOON_PAGES_PER_PAGE) { + struct page *page = balloon_pfn_to_page(vb->pfns[i]); + if (!virtio_has_feature(vb->vdev, + VIRTIO_BALLOON_F_DEFLATE_ON_OOM)) + adjust_managed_page_count(page, 1); put_page(page); /* balloon reference */ } } @@ -206,7 +210,7 @@ static unsigned leak_balloon(struct virtio_balloon *vb, size_t num) if (vb->num_pfns != 0) tell_host(vb, vb->deflate_vq); mutex_unlock(&vb->balloon_lock); - release_pages_by_pfn(vb->pfns, vb->num_pfns); + release_pages_balloon(vb); return num_freed_pages; } diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 10189b5b627f..f499d9da7237 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -58,6 +58,7 @@ #define pr_fmt(fmt) "virtio-mmio: " fmt +#include <linux/acpi.h> #include <linux/highmem.h> #include <linux/interrupt.h> #include <linux/io.h> @@ -732,12 +733,21 @@ static struct of_device_id virtio_mmio_match[] = { }; MODULE_DEVICE_TABLE(of, virtio_mmio_match); +#ifdef CONFIG_ACPI +static const struct acpi_device_id virtio_mmio_acpi_match[] = { + { "LNRO0005", }, + { } +}; +MODULE_DEVICE_TABLE(acpi, virtio_mmio_acpi_match); +#endif + static struct platform_driver virtio_mmio_driver = { .probe = virtio_mmio_probe, .remove = virtio_mmio_remove, .driver = { .name = "virtio-mmio", .of_match_table = virtio_mmio_match, + .acpi_match_table = ACPI_PTR(virtio_mmio_acpi_match), }, }; |