From: kys@exchange.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,
        leann.ogasawara@canonical.com, sthemmin@microsoft.com
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH V2 02/14] Drivers: hv: utils: reduce HV_UTIL_NEGO_TIMEOUT timeout
Date: Tue,  1 Nov 2016 13:07:22 -0700
Message-Id: <1478030854-5970-2-git-send-email-kys@exchange.microsoft.com>
In-Reply-To: <1478030854-5970-1-git-send-email-kys@exchange.microsoft.com>
References: <1478030807-5915-1-git-send-email-kys@exchange.microsoft.com>
 <1478030854-5970-1-git-send-email-kys@exchange.microsoft.com>
Reply-To: kys@microsoft.com
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 863
Lines: 27

From: Vitaly Kuznetsov <vkuznets@redhat.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@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.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