linux-kernel - [PATCH V2 02/14] Drivers: hv: utils: reduce HV_UTIL_NEGO

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Date:   Tue,  1 Nov 2016 13:07:22 -0700
From:   kys@...hange.microsoft.com
To:     gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        devel@...uxdriverproject.org, olaf@...fle.de, apw@...onical.com,
        vkuznets@...hat.com, jasowang@...hat.com,
        leann.ogasawara@...onical.com, sthemmin@...rosoft.com
Cc:     "K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH V2 02/14] Drivers: hv: utils: reduce HV_UTIL_NEGO_TIMEOUT timeout

From: Vitaly Kuznetsov <vkuznets@...hat.com>

I discovered that at least WS2016TP5 host has 60 seconds timeout for the
ICMSGTYPE_NEGOTIATE message so we need to lower guest's timeout a little
bit to make sure we always respond in time. Let's make it 55 seconds.

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
---
 drivers/hv/hyperv_vmbus.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index a5b4442..bdab7e7 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -38,7 +38,7 @@
 /*
  * Timeout for guest-host handshake for services.
  */
-#define HV_UTIL_NEGO_TIMEOUT 60
+#define HV_UTIL_NEGO_TIMEOUT 55
 
 /*
  * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent
-- 
1.7.4.1