Following the recommendation in Documentation/memory-barriers.txt for
virtual machine guests.
Fixes: 8b6a877c060ed ("Drivers: hv: vmbus: Replace the per-CPU channel lists with a global array of channels")
Signed-off-by: Andrea Parri (Microsoft) <[email protected]>
---
drivers/hv/channel_mgmt.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 60375879612f3..67be81208a2d9 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -380,7 +380,7 @@ void vmbus_channel_map_relid(struct vmbus_channel *channel)
* execute:
*
* (a) In the "normal (i.e., not resuming from hibernation)" path,
- * the full barrier in smp_store_mb() guarantees that the store
+ * the full barrier in virt_store_mb() guarantees that the store
* is propagated to all CPUs before the add_channel_work work
* is queued. In turn, add_channel_work is queued before the
* channel's ring buffer is allocated/initialized and the
@@ -392,14 +392,14 @@ void vmbus_channel_map_relid(struct vmbus_channel *channel)
* recv_int_page before retrieving the channel pointer from the
* array of channels.
*
- * (b) In the "resuming from hibernation" path, the smp_store_mb()
+ * (b) In the "resuming from hibernation" path, the virt_store_mb()
* guarantees that the store is propagated to all CPUs before
* the VMBus connection is marked as ready for the resume event
* (cf. check_ready_for_resume_event()). The interrupt handler
* of the VMBus driver and vmbus_chan_sched() can not run before
* vmbus_bus_resume() has completed execution (cf. resume_noirq).
*/
- smp_store_mb(
+ virt_store_mb(
vmbus_connection.channels[channel->offermsg.child_relid],
channel);
}
--
2.25.1
On Mon, Mar 28, 2022 at 05:44:57PM +0200, Andrea Parri (Microsoft) wrote:
> Following the recommendation in Documentation/memory-barriers.txt for
> virtual machine guests.
>
> Fixes: 8b6a877c060ed ("Drivers: hv: vmbus: Replace the per-CPU channel lists with a global array of channels")
> Signed-off-by: Andrea Parri (Microsoft) <[email protected]>
Applied to hyperv-fixes. Thanks.