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From: Haiyang Zhang <haiyangz at microsoft.com> Subject: [PATCH 1/2] staging: hv: Fix race condition in hv_utils module 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 the hv_utils module initialization happens after all vmbus IC channels are initialized. Sign...

From: Haiyang Zhang <haiyangz at microsoft.com> Subject: [PATCH 1/2] staging: hv: Fix race condition in hv_utils module 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 the hv_utils module initialization happens after all vmbus IC channels are initialized. Sign...

...ded autoloading based on pci id and dmi strings. Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> Cc: stable <stable at kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de> --- drivers/staging/hv/hv_utils.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) --- a/drivers/staging/hv/hv_utils.c +++ b/drivers/staging/hv/hv_utils.c @@ -24,6 +24,8 @@ #include <linux/slab.h> #include <linux/sysctl.h> #include <linux/reboot.h> +#include <linux/dmi.h> +#includ...

...ded autoloading based on pci id and dmi strings. Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> Cc: stable <stable at kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de> --- drivers/staging/hv/hv_utils.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) --- a/drivers/staging/hv/hv_utils.c +++ b/drivers/staging/hv/hv_utils.c @@ -24,6 +24,8 @@ #include <linux/slab.h> #include <linux/sysctl.h> #include <linux/reboot.h> +#include <linux/dmi.h> +#includ...

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 novell.com> fo...

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 novell.com> fo...

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 novell.com> fo...

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 novell.com> fo...

...et and return if they fail. I also tightened up the call to kmalloc. Thanks to Evgeniy Polyakov <zbr at ioremap.net> for pointing this out. Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/hv_utils.c | 48 ++++++++++++++++++++++++++++------------ 1 files changed, 33 insertions(+), 15 deletions(-) diff --git a/drivers/staging/hv/hv_utils.c b/drivers/staging/hv/hv_utils.c index 53e1e29..ac68575 100644 --- a/drivers/staging/hv/hv_utils.c +++ b/drivers/staging/hv/hv_utils.c @@ -43,21 +43,27 @...

...et and return if they fail. I also tightened up the call to kmalloc. Thanks to Evgeniy Polyakov <zbr at ioremap.net> for pointing this out. Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com> Signed-off-by: Hank Janssen <hjanssen at microsoft.com> --- drivers/staging/hv/hv_utils.c | 48 ++++++++++++++++++++++++++++------------ 1 files changed, 33 insertions(+), 15 deletions(-) diff --git a/drivers/staging/hv/hv_utils.c b/drivers/staging/hv/hv_utils.c index 53e1e29..ac68575 100644 --- a/drivers/staging/hv/hv_utils.c +++ b/drivers/staging/hv/hv_utils.c @@ -43,21 +43,27 @...

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 etc. This first release has support for Gracefull shutdown. e.g. Select shutdown from the Hyper-V main admin screen and the Linu...

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 etc. This first release has support for Gracefull shutdown. e.g. Select shutdown from the Hyper-V main admin screen and the Linu...

The hv_utils module will be composed of more than one file; rename hv_utils.c to accommodate this without changing the module name. Signed-off-by: K. Y. Srinivasan <ksrinivasan at novell.com> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: hv_util...

The hv_utils module will be composed of more than one file; rename hv_utils.c to accommodate this without changing the module name. Signed-off-by: K. Y. Srinivasan <ksrinivasan at novell.com> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: hv_util...

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 uninitialized channel. Signed-off-by: Haiyang Zhang <haiyangz at microso...

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 uninitialized channel. Signed-off-by: Haiyang Zhang <haiyangz at microso...

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>...

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. And properly clean up memory on failure. Thanks to Evgeniy Polyakov <zbr at ioremap.net> for pointing this out. And thanks to Jesper Juhl <jj at chaosbits.net> and Ky Sriniv...

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. And properly clean up memory on failure. Thanks to Evgeniy Polyakov <zbr at ioremap.net> for pointing this out. And thanks to Jesper Juhl <jj at chaosbits.net> and Ky Sriniv...