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authorAndrea Parri (Microsoft) <parri.andrea@gmail.com>2022-03-28 18:44:57 +0300
committerWei Liu <wei.liu@kernel.org>2022-04-06 16:31:58 +0300
commiteaa03d34535872d29004cb5cf77dc9dec1ba9a25 (patch)
tree0fb901ee87920f9fa23ae2308e80e5df5d353a9b /drivers/hv
parentbe5802795cf8d0b881745fa9ba7790293b382280 (diff)
downloadlinux-eaa03d34535872d29004cb5cf77dc9dec1ba9a25.tar.xz
Drivers: hv: vmbus: Replace smp_store_mb() with virt_store_mb()
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) <parri.andrea@gmail.com> Link: https://lore.kernel.org/r/20220328154457.100872-1-parri.andrea@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/channel_mgmt.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 60375879612f..67be81208a2d 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);
}