The balloon driver is stateful. For instance, it needs to keep track of pages
that have been ballooned out to properly post pressure reports. This state
cannot
be re-constructed if the driver were to be unloaded and subsequently loaded.
Furthermore, as we support memory hot-add as part of this driver, this driver
becomes
even more stateful and this state cannot be re-created. Make the balloon driver
unloadable to deal with this issue.
Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
Reviewed-by: Haiyang Zhang <haiya...@microsoft.com>
---
drivers/hv/hv_balloon.c | 7 -------
1 files changed, 0 insertions(+), 7 deletions(-)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 13fda38..4743db9 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -1096,14 +1096,7 @@ static int __init init_balloon_drv(void)
return vmbus_driver_register(&balloon_drv);
}
-static void exit_balloon_drv(void)
-{
-
- vmbus_driver_unregister(&balloon_drv);
-}
-
module_init(init_balloon_drv);
-module_exit(exit_balloon_drv);
MODULE_DESCRIPTION("Hyper-V Balloon");
MODULE_VERSION(HV_DRV_VERSION);
--
1.7.4.1
--
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