diff options
Diffstat (limited to 'drivers/xen/gntdev-common.h')
| -rw-r--r-- | drivers/xen/gntdev-common.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/xen/gntdev-common.h b/drivers/xen/gntdev-common.h index 9a3960ecff6c..9c286b2a1900 100644 --- a/drivers/xen/gntdev-common.h +++ b/drivers/xen/gntdev-common.h @@ -15,6 +15,8 @@ #include <linux/mman.h> #include <linux/mmu_notifier.h> #include <linux/types.h> +#include <xen/interface/event_channel.h> +#include <xen/grant_table.h> struct gntdev_dmabuf_priv; @@ -38,13 +40,14 @@ struct gntdev_unmap_notify { int flags; /* Address relative to the start of the gntdev_grant_map. */ int addr; - int event; + evtchn_port_t event; }; struct gntdev_grant_map { + atomic_t in_use; struct mmu_interval_notifier notifier; + bool notifier_init; struct list_head next; - struct vm_area_struct *vma; int index; int count; int flags; @@ -55,6 +58,7 @@ struct gntdev_grant_map { struct gnttab_unmap_grant_ref *unmap_ops; struct gnttab_map_grant_ref *kmap_ops; struct gnttab_unmap_grant_ref *kunmap_ops; + bool *being_removed; struct page **pages; unsigned long pages_vm_start; @@ -72,6 +76,11 @@ struct gntdev_grant_map { /* Needed to avoid allocation in gnttab_dma_free_pages(). */ xen_pfn_t *frames; #endif + + /* Number of live grants */ + atomic_t live_grants; + /* Needed to avoid allocation in __unmap_grant_pages */ + struct gntab_unmap_queue_data unmap_data; }; struct gntdev_grant_map *gntdev_alloc_map(struct gntdev_priv *priv, int count, |