similar to: [PATCH 1/2] staging: hv: Fix race condition in hv_utils module initialization.

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: staging: hv: Fix race condition on IC channel initialization There is a possible race condition when hv_utils starts to load immediately after hv_vmbus is loading - null pointer error could happen. This patch added an atomic counter to ensure all channels are ready before vmbus_init() returns. So another module won't have any

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: staging: hv: Fix race condition on IC channel initialization There is a possible race condition when hv_utils starts to load immediately after hv_vmbus is loading - null pointer error could happen. This patch added an atomic counter to ensure all channels are ready before vmbus_init() returns. So another module won't have any

Resending this patch from my personal Linux server. Exchange server and outlook at Microsoft seems to badly munge my patch. :( From: Hank Janssen <hjanssen at sailtheuniverse.com> Subject: [PATCH 1/1] hv: Added new hv_utils driver with shutdown as first functionality Addition of new driver for Hyper-V called hv_utils. This driver is intended to support things like KVP, Timesync, Heartbeat

Resending this patch from my personal Linux server. Exchange server and outlook at Microsoft seems to badly munge my patch. :( From: Hank Janssen <hjanssen at sailtheuniverse.com> Subject: [PATCH 1/1] hv: Added new hv_utils driver with shutdown as first functionality Addition of new driver for Hyper-V called hv_utils. This driver is intended to support things like KVP, Timesync, Heartbeat

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: [PATCH] staging: hv: Fix race condition on IC channel initialization There is a possible race condition when hv_utils starts to load immediately after hv_vmbus is loading - null pointer error could happen. This patch added an event waiting to ensure all channels are ready before vmbus_init() returns. So another module won't have

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: [PATCH] staging: hv: Fix race condition on IC channel initialization There is a possible race condition when hv_utils starts to load immediately after hv_vmbus is loading - null pointer error could happen. This patch added an event waiting to ensure all channels are ready before vmbus_init() returns. So another module won't have

From: Hank Janssen <hjanssen at microsoft.com> Addition of new driver for Hyper-V called hv_utils. This driver is intended to support things like KVP, Timesync, Heartbeat etc. This first release has support for graceful shutdown. e.g. Select shutdown from the Hyper-V main admin screen and the Linux VM will do a graceful shutdown. Signed-off-by: Hank Janssen <hjanssen at

From: Hank Janssen <hjanssen at microsoft.com> Addition of new driver for Hyper-V called hv_utils. This driver is intended to support things like KVP, Timesync, Heartbeat etc. This first release has support for graceful shutdown. e.g. Select shutdown from the Hyper-V main admin screen and the Linux VM will do a graceful shutdown. Signed-off-by: Hank Janssen <hjanssen at

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: Add Time Sync feature to hv_utils module. The Time Sync feature synchronizes guest time to host UTC time after reboot, and restore from saved/paused state. Cc: Greg Kroah-Hartman <gregkh at suse.de> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> ---

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: Add Time Sync feature to hv_utils module. The Time Sync feature synchronizes guest time to host UTC time after reboot, and restore from saved/paused state. Cc: Greg Kroah-Hartman <gregkh at suse.de> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> ---

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: [PATCH] staging: hv: Fix race condition on vmbus channel initialization There is a possible race condition when hv_utils starts to load immediately after hv_vmbus is loading - null pointer error could happen. This patch added wait/completion to ensure all channels are ready before vmbus loading completes. So another module won't

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: [PATCH] staging: hv: Fix race condition on vmbus channel initialization There is a possible race condition when hv_utils starts to load immediately after hv_vmbus is loading - null pointer error could happen. This patch added wait/completion to ensure all channels are ready before vmbus loading completes. So another module won't

=20 This is an implementation of the key/value pair (KVP) functionality=20 for Linux guests hosted on HyperV. All guest specific data gathering = for=20 KVP will be implemented in a user-level daemon. This kernel component = packaged as part of the hv_utils driver supports communication with the HyperV=20 host.=20 Signed-off-by: ksrinivasan <ksrinivasan at novell.com> ---

=20 This is an implementation of the key/value pair (KVP) functionality=20 for Linux guests hosted on HyperV. All guest specific data gathering = for=20 KVP will be implemented in a user-level daemon. This kernel component = packaged as part of the hv_utils driver supports communication with the HyperV=20 host.=20 Signed-off-by: ksrinivasan <ksrinivasan at novell.com> ---

This is an implementation of the key value/pair (KVP) functionality for Linux guests hosted on HyperV. This component communicates with the host to support the KVP functionality. Signed-off-by: K. Y. Srinivasan <ksrinivasan at novell.com> --- drivers/staging/hv/Makefile | 2 +- drivers/staging/hv/channel_mgmt.c | 23 +++- drivers/staging/hv/hv_kvp.c | 346

This is an implementation of the key value/pair (KVP) functionality for Linux guests hosted on HyperV. This component communicates with the host to support the KVP functionality. Signed-off-by: K. Y. Srinivasan <ksrinivasan at novell.com> --- drivers/staging/hv/Makefile | 2 +- drivers/staging/hv/channel_mgmt.c | 23 +++- drivers/staging/hv/hv_kvp.c | 346

From: Haiyang Zhang <haiyangz at microsoft.com> Convert camel cased struct fields in channel_mgmt.h to lower cases Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/channel.c | 302 ++++++++++++++++++------------------ drivers/staging/hv/channel_mgmt.c | 186 ++++++++++++------------

From: Haiyang Zhang <haiyangz at microsoft.com> Convert camel cased struct fields in channel_mgmt.h to lower cases Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/channel.c | 302 ++++++++++++++++++------------------ drivers/staging/hv/channel_mgmt.c | 186 ++++++++++++------------

Correct issue with not checking kmalloc return value. This fix now only uses one receive buffer for all hv_utils channels, and will do only one kmalloc on init and will return with a -ENOMEM if kmalloc fails on initialize. Thanks to Evgeniy Polyakov <zbr at ioremap.net> for pointing this out. And thanks to Jesper Juhl <jj at chaosbits.net> and Ky Srinivasan <ksrinivasan at

Correct issue with not checking kmalloc return value. This fix now only uses one receive buffer for all hv_utils channels, and will do only one kmalloc on init and will return with a -ENOMEM if kmalloc fails on initialize. Thanks to Evgeniy Polyakov <zbr at ioremap.net> for pointing this out. And thanks to Jesper Juhl <jj at chaosbits.net> and Ky Srinivasan <ksrinivasan at