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Commit 20138d6c authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman
Browse files

Drivers: hv: balloon: Initialize the transaction ID just before sending the packet 



Each message sent from the guest carries with it a transaction ID.
Assign the transaction ID just before putting the message on the VMBUS.
This would help in debugging on the host side.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6741335b

drivers/hv/hv_balloon.c

+2 −2
Original line number Original line Diff line number Diff line
@@ -828,7 +828,6 @@ static void hot_add_req(struct work_struct *dummy) 
	memset(&resp, 0, sizeof(struct dm_hot_add_response));

	memset(&resp, 0, sizeof(struct dm_hot_add_response));

	resp.hdr.type = DM_MEM_HOT_ADD_RESPONSE;

	resp.hdr.type = DM_MEM_HOT_ADD_RESPONSE;

	resp.hdr.size = sizeof(struct dm_hot_add_response);

	resp.hdr.size = sizeof(struct dm_hot_add_response);

	resp.hdr.trans_id = atomic_inc_return(&trans_id);





#ifdef CONFIG_MEMORY_HOTPLUG

#ifdef CONFIG_MEMORY_HOTPLUG

	pg_start = dm->ha_wrk.ha_page_range.finfo.start_page;

	pg_start = dm->ha_wrk.ha_page_range.finfo.start_page;
@@ -890,6 +889,7 @@ static void hot_add_req(struct work_struct *dummy) 
		pr_info("Memory hot add failed\n");

		pr_info("Memory hot add failed\n");





	dm->state = DM_INITIALIZED;

	dm->state = DM_INITIALIZED;

	resp.hdr.trans_id = atomic_inc_return(&trans_id);

	vmbus_sendpacket(dm->dev->channel, &resp,

	vmbus_sendpacket(dm->dev->channel, &resp,

			sizeof(struct dm_hot_add_response),

			sizeof(struct dm_hot_add_response),

			(unsigned long)NULL,

			(unsigned long)NULL,
@@ -1076,7 +1076,6 @@ static void balloon_up(struct work_struct *dummy) 
		bl_resp = (struct dm_balloon_response *)send_buffer;

		bl_resp = (struct dm_balloon_response *)send_buffer;

		memset(send_buffer, 0, PAGE_SIZE);

		memset(send_buffer, 0, PAGE_SIZE);

		bl_resp->hdr.type = DM_BALLOON_RESPONSE;

		bl_resp->hdr.type = DM_BALLOON_RESPONSE;

		bl_resp->hdr.trans_id = atomic_inc_return(&trans_id);

		bl_resp->hdr.size = sizeof(struct dm_balloon_response);

		bl_resp->hdr.size = sizeof(struct dm_balloon_response);

		bl_resp->more_pages = 1;

		bl_resp->more_pages = 1;
@@ -1104,6 +1103,7 @@ static void balloon_up(struct work_struct *dummy) 
		 */

		 */





		do {

		do {

			bl_resp->hdr.trans_id = atomic_inc_return(&trans_id);

			ret = vmbus_sendpacket(dm_device.dev->channel,

			ret = vmbus_sendpacket(dm_device.dev->channel,

						bl_resp,

						bl_resp,

						bl_resp->hdr.size,

						bl_resp->hdr.size,