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Commit b282e4c0 authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman
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Drivers: hv: vmbus: Force all channel messages to be delivered on CPU 0 



Force all channel messages to be delivered on CPU0. These messages are not
performance critical and are used during the setup and teardown of the
channel.

Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c35b82ef

drivers/hv/connection.c

+7 −4
Original line number Diff line number Diff line
@@ -83,10 +83,13 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo, 
	msg->interrupt_page = virt_to_phys(vmbus_connection.int_page);

	msg->monitor_page1 = virt_to_phys(vmbus_connection.monitor_pages[0]);

	msg->monitor_page2 = virt_to_phys(vmbus_connection.monitor_pages[1]);

	if (version >= VERSION_WIN8_1) {

		msg->target_vcpu = hv_context.vp_index[get_cpu()];

		put_cpu();

	}

	/*

	 * We want all channel messages to be delivered on CPU 0.

	 * This has been the behavior pre-win8. This is not

	 * perf issue and having all channel messages delivered on CPU 0

	 * would be ok.

	 */

	msg->target_vcpu = 0;



	/*

	 * Add to list before we send the request since we may