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 15/28] Drivers: hv: vmbus: don't send CHANNELMSG_UNLOAD on pre-Win2012R2 hosts
Date: Sat, 1 Aug 2015 16:08:19 -0700 [thread overview]
Message-ID: <1438470512-30205-15-git-send-email-kys@microsoft.com> (raw)
In-Reply-To: <1438470512-30205-1-git-send-email-kys@microsoft.com>
From: Vitaly Kuznetsov <vkuznets@redhat.com>
Pre-Win2012R2 hosts don't properly handle CHANNELMSG_UNLOAD and
wait_for_completion() hangs. Avoid sending such request on old hosts.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/channel_mgmt.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 4506a66..00ba3f3 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -469,6 +469,10 @@ void vmbus_initiate_unload(void)
{
struct vmbus_channel_message_header hdr;
+ /* Pre-Win2012R2 hosts don't support reconnect */
+ if (vmbus_proto_version < VERSION_WIN8_1)
+ return;
+
init_completion(&vmbus_connection.unload_event);
memset(&hdr, 0, sizeof(struct vmbus_channel_message_header));
hdr.msgtype = CHANNELMSG_UNLOAD;
--
1.7.4.1
next prev parent reply other threads:[~2015-08-01 21:46 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-01 23:08 [PATCH 00/28] Drivers: hv: vmbus K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 01/28] Drivers: hv: vmbus: remove hv_synic_free_cpu() call from hv_synic_cleanup() K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 02/28] kexec: define kexec_in_progress in !CONFIG_KEXEC case K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 03/28] Drivers: hv: vmbus: add special kexec handler K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 04/28] Drivers: hv: don't do hypercalls when hypercall_page is NULL K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 05/28] Drivers: hv: vmbus: add special crash handler K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 06/28] Drivers: hv: vmbus: prefer 'die' notification chain to 'panic' K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 07/28] Drivers: hv: kvp: check kzalloc return value K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 08/28] Drivers: hv: fcopy: dynamically allocate smsg_out in fcopy_send_data() K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 09/28] Drivers: hv: balloon: Enable dynamic memory protocol negotiation with Windows 10 hosts K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 10/28] Drivers: hv: vmbus: Permit sending of packets without payload K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 11/28] drivers:hv: Modify hv_vmbus to search for all MMIO ranges available K. Y. Srinivasan
2015-08-05 5:29 ` Greg KH
2015-08-05 5:59 ` KY Srinivasan
2015-08-01 23:08 ` [PATCH 12/28] drivers:hv: Move MMIO range picking from hyper_fb to hv_vmbus K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 13/28] hv: util: checking the wrong variable K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 14/28] Drivers: hv: vmbus: fix typo in hv_port_info struct K. Y. Srinivasan
2015-08-01 23:08 ` K. Y. Srinivasan [this message]
2015-08-01 23:08 ` [PATCH 16/28] mshyperv: fix recognition of Hyper-V guest crash MSR's K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 17/28] Drivers: hv: vmbus: Consider ND NIC in binding channels to CPUs K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 18/28] Drivers: hv: vmbus: Improve the CPU affiliation for channels K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 19/28] Drivers: hv: vmbus: Further improve CPU affiliation logic K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 20/28] Drivers: hv_vmbus: Fix signal to host condition K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 21/28] drivers/hv: Migrate to new 'set-state' interface K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 22/28] Drivers: hv: vmbus: Implement a clocksource based on the TSC page K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 23/28] Drivers: hv: vmbus: add a sysfs attr to show the binding of channel/VP K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 24/28] tools: hv: add a python script lsvmbus to list VMBus devices K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 25/28] Drivers: hv: vmbus: document the VMBus sysfs files K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 26/28] cpu-hotplug: convert cpu_hotplug_disabled to a counter K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 27/28] cpu-hotplug: export cpu_hotplug_enable/cpu_hotplug_disable K. Y. Srinivasan
2015-08-01 23:08 ` [PATCH 28/28] Drivers: hv: vmbus: use cpu_hotplug_enable/disable K. Y. Srinivasan
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