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-rw-r--r--drivers/xen/gntdev.c2
-rw-r--r--drivers/xen/xen-balloon.c19
2 files changed, 14 insertions, 7 deletions
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 82360594fa8e..57efbd3b053b 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -1024,6 +1024,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
mutex_unlock(&priv->lock);
if (use_ptemod) {
+ map->pages_vm_start = vma->vm_start;
err = apply_to_page_range(vma->vm_mm, vma->vm_start,
vma->vm_end - vma->vm_start,
find_grant_ptes, map);
@@ -1061,7 +1062,6 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
set_grant_ptes_as_special, NULL);
}
#endif
- map->pages_vm_start = vma->vm_start;
}
return 0;
diff --git a/drivers/xen/xen-balloon.c b/drivers/xen/xen-balloon.c
index e89136ab851e..b437fccd4e62 100644
--- a/drivers/xen/xen-balloon.c
+++ b/drivers/xen/xen-balloon.c
@@ -57,7 +57,7 @@ static int register_balloon(struct device *dev);
static void watch_target(struct xenbus_watch *watch,
const char *path, const char *token)
{
- unsigned long long new_target;
+ unsigned long long new_target, static_max;
int err;
static bool watch_fired;
static long target_diff;
@@ -72,13 +72,20 @@ static void watch_target(struct xenbus_watch *watch,
* pages. PAGE_SHIFT converts bytes to pages, hence PAGE_SHIFT - 10.
*/
new_target >>= PAGE_SHIFT - 10;
- if (watch_fired) {
- balloon_set_new_target(new_target - target_diff);
- return;
+
+ if (!watch_fired) {
+ watch_fired = true;
+ err = xenbus_scanf(XBT_NIL, "memory", "static-max", "%llu",
+ &static_max);
+ if (err != 1)
+ static_max = new_target;
+ else
+ static_max >>= PAGE_SHIFT - 10;
+ target_diff = xen_pv_domain() ? 0
+ : static_max - balloon_stats.target_pages;
}
- watch_fired = true;
- target_diff = new_target - balloon_stats.target_pages;
+ balloon_set_new_target(new_target - target_diff);
}
static struct xenbus_watch target_watch = {
.node = "memory/target",