From: Tianyu Lan <redacted>

Mark vmbus ring buffer visible with set_memory_decrypted() when
establish gpadl handle.

Signed-off-by: Tianyu Lan <redacted>
---
Change since v3:
       * Change vmbus_teardown_gpadl() parameter and put gpadl handle,
       buffer and buffer size in the struct vmbus_gpadl.
---
 drivers/hv/channel.c            | 36 ++++++++++++++++++++++++++++-----
 drivers/net/hyperv/hyperv_net.h |  1 +
 drivers/net/hyperv/netvsc.c     | 16 +++++++++++----
 drivers/uio/uio_hv_generic.c    | 14 +++++++++++--
 include/linux/hyperv.h          |  8 +++++++-
 5 files changed, 63 insertions(+), 12 deletions(-)

diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index f3761c73b074..82650beb3af0 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c

@@ -17,6 +17,7 @@
 #include <linux/hyperv.h>
 #include <linux/uio.h>
 #include <linux/interrupt.h>
+#include <linux/set_memory.h>
 #include <asm/page.h>
 #include <asm/mshyperv.h>
 

@@ -474,6 +475,13 @@ static int __vmbus_establish_gpadl(struct vmbus_channel *channel,
 	if (ret)
 		return ret;
 
+	ret = set_memory_decrypted((unsigned long)kbuffer,
+				   HVPFN_UP(size));
+	if (ret) {
+		pr_warn("Failed to set host visibility for new GPADL %d.\n", ret);