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From: "K. Y. Srinivasan" <kys@microsoft.com>
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
	devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
	vkuznets@redhat.com, jasowang@redhat.com
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH V2 1/3] Drivers: hv: vmbus: Use the vp_index map even for channels bound to CPU 0
Date: Sat, 30 May 2015 23:37:47 -0700	[thread overview]
Message-ID: <1433054269-22278-1-git-send-email-kys@microsoft.com> (raw)
In-Reply-To: <1433054248-22239-1-git-send-email-kys@microsoft.com>

Map target_cpu to target_vcpu using the mapping table.
We should use the mapping table to transform guest CPU ID to VP Index
as is done for the non-performance critical channels.
While the value CPU 0 is special and will
map to VP index 0, it is good to be consistent.



Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
	V2: Added clarification to the commit log (Dan Carpenter)

 drivers/hv/channel_mgmt.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 1f1417d..c3eba37 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -406,7 +406,7 @@ static void init_vp_index(struct vmbus_channel *channel, const uuid_le *type_gui
 		 * channel, bind it to cpu 0.
 		 */
 		channel->target_cpu = 0;
-		channel->target_vp = 0;
+		channel->target_vp = hv_context.vp_index[0];
 		return;
 	}
 
-- 
1.7.4.1


  reply	other threads:[~2015-05-31  5:16 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-31  6:37 [PATCH V2 0/3] Drivers: hv: vmbus: Make VMBUS driver NUMA aware K. Y. Srinivasan
2015-05-31  6:37 ` K. Y. Srinivasan [this message]
2015-05-31  6:37   ` [PATCH V2 2/3] Drivers: hv: vmbus: Implement NUMA aware CPU affinity for channels K. Y. Srinivasan
2015-05-31  6:37   ` [PATCH V2 3/3] Drivers: hv: vmbus: Allocate ring buffer memory in NUMA aware fashion K. Y. Srinivasan
2015-05-31  6:41     ` Greg KH
2015-05-31 18:39       ` KY Srinivasan

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