[PATCH V2 11/15] hv: don't reset hv_context.tsc_page on crash

From: Vitaly Kuznetsov It may happen that secondary CPUs are still alive and resetting hv_context.tsc_page will cause a consequent crash in read_hv_clock_tsc() as we don't check for it being not NULL there. It is safe as we're not freeing this page anyways. Signed-off-by: Vitaly Kuznetsov

[PATCH V2 06/15] hv: allocate synic pages for all present CPUs

From: Vitaly Kuznetsov It may happen that not all CPUs are online when we do hv_synic_alloc() and in case more CPUs come online later we may try accessing these allocated structures. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv.c |4 ++-- 1 files

[PATCH V2 08/15] hv: change clockevents unbind tactics

From: Vitaly Kuznetsov To get prepared to CPU offlining support we need co change the way how we unbind clockevent devices. As one CPU may go online/offline multiple times we need to bind it in hv_synic_init() and unbind it in hv_synic_cleanup(). There is an additional corner case: when we

[PATCH V2 13/15] uio-hv-generic: new userspace i/o driver for VMBus

From: Stephen Hemminger This is a new driver to enable userspace networking on VMBus. It is based largely on the similar driver that already exists for PCI, and earlier work done by Brocade to support DPDK. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan --- MAINTAINERS

[PATCH V2 12/15] vmbus: add support for dynamic device id's

From: Stephen Hemminger This patch adds sysfs interface to dynamically bind new UUID values to existing VMBus device. This is useful for generic UIO driver to act similar to uio_pci_generic. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y.

[PATCH V2 14/15] Tools: hv: kvp: configurable external scripts path

From: Alex Fluter error when running hypervkvpd: $ sudo ./hv_kvp_daemon -n sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found The external scripts are not installed in

[PATCH V2 09/15] hv: switch to cpuhp state machine for synic init/cleanup

From: Vitaly Kuznetsov To make it possible to online/offline CPUs switch to cpuhp infrastructure for doing hv_synic_init()/hv_synic_cleanup(). Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv.c

[PATCH V2 10/15] hv: make CPU offlining prevention fine-grained

From: Vitaly Kuznetsov Since commit e513229b4c38 ("Drivers: hv: vmbus: prevent cpu offlining on newer hypervisors") cpu offlining was disabled. It is still true that we can't offline CPUs which have VMBus channels bound to them but we may have 'free' CPUs (e.v. we booted

[PATCH V2 09/15] hv: switch to cpuhp state machine for synic init/cleanup

From: Vitaly Kuznetsov To make it possible to online/offline CPUs switch to cpuhp infrastructure for doing hv_synic_init()/hv_synic_cleanup(). Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv.c | 15 +++ drivers/hv/hyperv_vmbus.h |

[PATCH V2 10/15] hv: make CPU offlining prevention fine-grained

From: Vitaly Kuznetsov Since commit e513229b4c38 ("Drivers: hv: vmbus: prevent cpu offlining on newer hypervisors") cpu offlining was disabled. It is still true that we can't offline CPUs which have VMBus channels bound to them but we may have 'free' CPUs (e.v. we booted with maxcpus= parameter

[PATCH V2 12/15] vmbus: add support for dynamic device id's

From: Stephen Hemminger This patch adds sysfs interface to dynamically bind new UUID values to existing VMBus device. This is useful for generic UIO driver to act similar to uio_pci_generic. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan --- drivers/hv/vmbus_drv.c | 174

[PATCH V2 14/15] Tools: hv: kvp: configurable external scripts path

From: Alex Fluter error when running hypervkvpd: $ sudo ./hv_kvp_daemon -n sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found The external scripts are not installed in system path, adding

[PATCH V2 02/15] hyperv: Fix spelling of HV_UNKOWN

From: Haiyang Zhang Changed it to HV_UNKNOWN Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan --- drivers/hv/channel_mgmt.c |6 +++--- include/linux/hyperv.h|2 +- 2 files changed, 4 insertions(+), 4

[PATCH V2 03/15] Drivers: hv: vmbus: Prevent sending data on a rescinded channel

From: K. Y. Srinivasan After the channel is rescinded, the host does not read from the rescinded channel. Fail writes to a channel that has already been rescinded. Signed-off-by: K. Y. Srinivasan --- drivers/hv/ring_buffer.c |3 +++ 1 files

[PATCH V2 07/15] hv: init percpu_list in hv_synic_alloc()

From: Vitaly Kuznetsov Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a crash in percpu_channel_enq() when not all CPUs were online during initialization and it naturally belongs there. Signed-off-by: Vitaly Kuznetsov

[PATCH V2 03/15] Drivers: hv: vmbus: Prevent sending data on a rescinded channel

From: K. Y. Srinivasan After the channel is rescinded, the host does not read from the rescinded channel. Fail writes to a channel that has already been rescinded. Signed-off-by: K. Y. Srinivasan --- drivers/hv/ring_buffer.c |3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff

[PATCH V2 07/15] hv: init percpu_list in hv_synic_alloc()

From: Vitaly Kuznetsov Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a crash in percpu_channel_enq() when not all CPUs were online during initialization and it naturally belongs there. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan ---

[PATCH V2 02/15] hyperv: Fix spelling of HV_UNKOWN

From: Haiyang Zhang Changed it to HV_UNKNOWN Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan --- drivers/hv/channel_mgmt.c |6 +++--- include/linux/hyperv.h|2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/hv/channel_mgmt.c

[PATCH V2 15/15] hyperv: Add a function to detect if the device is a vmbus dev

From: Haiyang Zhang On Hyper-V, every VF interface has a corresponding synthetic interface managed by netvsc that share the same MAC address. netvsc registers for netdev events to manage this association. Currently we use the MAC address to manage this association but

[PATCH V2 15/15] hyperv: Add a function to detect if the device is a vmbus dev

From: Haiyang Zhang On Hyper-V, every VF interface has a corresponding synthetic interface managed by netvsc that share the same MAC address. netvsc registers for netdev events to manage this association. Currently we use the MAC address to manage this association but going forward, we want to

[PATCH V2 04/15] Drivers: hv: vmbus: Enhance the rescind callback functionality

From: K. Y. Srinivasan Enhance the rescind callback functionality by permitting the passing of an opaque pointer. This functionality will be used by vmbus device drivers to implement rescind related cleanup more efficiently. Signed-off-by: K. Y. Srinivasan

[PATCH V2 05/15] hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels()

From: Vitaly Kuznetsov "kernel BUG at drivers/hv/channel_mgmt.c:350!" is observed when hv_vmbus module is unloaded. BUG_ON() was introduced in commit 85d9aa705184 ("Drivers: hv: vmbus: add an API vmbus_hvsock_device_unregister()") as vmbus_free_channels() codepath was

[PATCH V2 04/15] Drivers: hv: vmbus: Enhance the rescind callback functionality

From: K. Y. Srinivasan Enhance the rescind callback functionality by permitting the passing of an opaque pointer. This functionality will be used by vmbus device drivers to implement rescind related cleanup more efficiently. Signed-off-by: K. Y. Srinivasan --- drivers/hv/channel_mgmt.c |

[PATCH V2 05/15] hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels()

From: Vitaly Kuznetsov "kernel BUG at drivers/hv/channel_mgmt.c:350!" is observed when hv_vmbus module is unloaded. BUG_ON() was introduced in commit 85d9aa705184 ("Drivers: hv: vmbus: add an API vmbus_hvsock_device_unregister()") as vmbus_free_channels() codepath was apparently forgotten.

[PATCH V2 01/15] Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post_msg()

From: Vitaly Kuznetsov DoS protection conditions were altered in WS2016 and now it's easy to get -EAGAIN returned from vmbus_post_msg() (e.g. when we try changing MTU on a netvsc device in a loop). All vmbus_post_msg() callers don't retry the operation and we usually end up

[PATCH V2 01/15] Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post_msg()

From: Vitaly Kuznetsov DoS protection conditions were altered in WS2016 and now it's easy to get -EAGAIN returned from vmbus_post_msg() (e.g. when we try changing MTU on a netvsc device in a loop). All vmbus_post_msg() callers don't retry the operation and we usually end up with a non-functional

[PATCH V2 00/15] Drivers: hv: CPU management fixes and a new uio driver

From: K. Y. Srinivasan Fixes to handle CPU online/offline. Also included is a new uio driver for Hyper-V. V2: Updated commit logs (Greg KH) Re-implemented the API to detect if it is a vmbus device Alex Fluter (1): Tools: hv: kvp: configurable external

[PATCH V2 00/15] Drivers: hv: CPU management fixes and a new uio driver

From: K. Y. Srinivasan Fixes to handle CPU online/offline. Also included is a new uio driver for Hyper-V. V2: Updated commit logs (Greg KH) Re-implemented the API to detect if it is a vmbus device Alex Fluter (1): Tools: hv: kvp: configurable external scripts path

[PATCH 14/15] uio-hv-generic: new userspace i/o driver for VMBus

From: Stephen Hemminger This is a new driver to enable userspace networking on VMBus. It is based largely on the similar driver that already exists for PCI, and earlier work done by Brocade to support DPDK. Signed-off-by: Stephen Hemminger

[PATCH 14/15] uio-hv-generic: new userspace i/o driver for VMBus

From: Stephen Hemminger This is a new driver to enable userspace networking on VMBus. It is based largely on the similar driver that already exists for PCI, and earlier work done by Brocade to support DPDK. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan --- MAINTAINERS

[PATCH 12/15] hv: don't reset hv_context.tsc_page on crash

From: Vitaly Kuznetsov It may happen that secondary CPUs are still alive and resetting hv_context.tsc_page will cause a consequent crash in read_hv_clock_tsc() as we don't check for it being not NULL there. It is safe as we're not freeing this page anyways. Signed-off-by:

[PATCH 12/15] hv: don't reset hv_context.tsc_page on crash

From: Vitaly Kuznetsov It may happen that secondary CPUs are still alive and resetting hv_context.tsc_page will cause a consequent crash in read_hv_clock_tsc() as we don't check for it being not NULL there. It is safe as we're not freeing this page anyways. Signed-off-by: Vitaly Kuznetsov

[PATCH 04/15] Drivers: hv: vmbus: Prevent sending data on a rescinded channel

From: K. Y. Srinivasan After the channel is rescinded, the host does not read from the rescinded channel. Fail writes to a channel that has already been rescinded Signed-off-by: K. Y. Srinivasan --- drivers/hv/ring_buffer.c |3 +++ 1 files changed,

[PATCH 04/15] Drivers: hv: vmbus: Prevent sending data on a rescinded channel

From: K. Y. Srinivasan After the channel is rescinded, the host does not read from the rescinded channel. Fail writes to a channel that has already been rescinded Signed-off-by: K. Y. Srinivasan --- drivers/hv/ring_buffer.c |3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff

[PATCH 02/15] hyperv: Add a function to detect hv_device

From: Haiyang Zhang Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan --- drivers/hv/vmbus_drv.c |6 ++ include/linux/hyperv.h |2 ++ 2 files changed, 8 insertions(+), 0 deletions(-) diff --git

[PATCH 02/15] hyperv: Add a function to detect hv_device

From: Haiyang Zhang Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan --- drivers/hv/vmbus_drv.c |6 ++ include/linux/hyperv.h |2 ++ 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 0276d2e..1730ac0

[PATCH 00/15] Drivers: hv: CPU management fixes and a new uio driver

From: K. Y. Srinivasan Fixes to handle CPU online/offline. Also included is a new uio driver for Hyper-V. Alex Fluter (1): Tools: hv: kvp: configurable external scripts path Haiyang Zhang (2): hyperv: Add a function to detect hv_device hyperv: Fix spelling of

[PATCH 00/15] Drivers: hv: CPU management fixes and a new uio driver

From: K. Y. Srinivasan Fixes to handle CPU online/offline. Also included is a new uio driver for Hyper-V. Alex Fluter (1): Tools: hv: kvp: configurable external scripts path Haiyang Zhang (2): hyperv: Add a function to detect hv_device hyperv: Fix spelling of HV_UNKOWN K. Y. Srinivasan

[PATCH 15/15] Tools: hv: kvp: configurable external scripts path

From: Alex Fluter error when running hypervkvpd: $ sudo ./hv_kvp_daemon -n sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found The external scripts are not installed in

[PATCH 15/15] Tools: hv: kvp: configurable external scripts path

From: Alex Fluter error when running hypervkvpd: $ sudo ./hv_kvp_daemon -n sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found sh: hv_get_dns_info: command not found sh: hv_get_dhcp_info: command not found The external scripts are not installed in system path, adding

[PATCH 08/15] hv: init percpu_list in hv_synic_alloc()

From: Vitaly Kuznetsov Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a crash in percpu_channel_enq() when not all CPUs were online during initialization and it naturally belongs there. Signed-off-by: Vitaly Kuznetsov

[PATCH 13/15] vmbus: add support for dynamic device id's

From: Stephen Hemminger This patch adds sysfs interface to dynamically bind new UUID values to existing VMBus device. This is useful for generic UIO driver to act similar to uio_pci_generic. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y.

[PATCH 08/15] hv: init percpu_list in hv_synic_alloc()

From: Vitaly Kuznetsov Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a crash in percpu_channel_enq() when not all CPUs were online during initialization and it naturally belongs there. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan ---

[PATCH 13/15] vmbus: add support for dynamic device id's

From: Stephen Hemminger This patch adds sysfs interface to dynamically bind new UUID values to existing VMBus device. This is useful for generic UIO driver to act similar to uio_pci_generic. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan --- drivers/hv/vmbus_drv.c | 174

[PATCH 06/15] hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels()

From: Vitaly Kuznetsov "kernel BUG at drivers/hv/channel_mgmt.c:350!" is observed when hv_vmbus module is unloaded. BUG_ON() was introduced in commit 85d9aa705184 ("Drivers: hv: vmbus: add an API vmbus_hvsock_device_unregister()") as vmbus_free_channels() codepath was

[PATCH 10/15] hv: switch to cpuhp state machine for synic init/cleanup

From: Vitaly Kuznetsov To make it possible to online/offline CPUs switch to cpuhp infrastructure for doing hv_synic_init()/hv_synic_cleanup(). Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv.c

[PATCH 07/15] hv: allocate synic pages for all present CPUs

From: Vitaly Kuznetsov It may happen that not all CPUs are online when we do hv_synic_alloc() and in case more CPUs come online later we may try accessing these allocated structures. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan

[PATCH 03/15] hyperv: Fix spelling of HV_UNKOWN

From: Haiyang Zhang Changed it to HV_UNKNOWN Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan --- drivers/hv/channel_mgmt.c |6 +++--- include/linux/hyperv.h|2 +- 2 files changed, 4 insertions(+), 4

[PATCH 01/15] Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post_msg()

From: Vitaly Kuznetsov DoS protection conditions were altered in WS2016 and now it's easy to get -EAGAIN returned from vmbus_post_msg() (e.g. when we try changing MTU on a netvsc device in a loop). All vmbus_post_msg() callers don't retry the operation and we usually end up

[PATCH 11/15] hv: make CPU offlining prevention fine-grained

From: Vitaly Kuznetsov Since commit e513229b4c38 ("Drivers: hv: vmbus: prevent cpu offlining on newer hypervisors") cpu offlining was disabled. It is still true that we can't offline CPUs which have VMBus channels bound to them but we may have 'free' CPUs (e.v. we booted

[PATCH 05/15] Drivers: hv: vmbus: Enhance the rescind callback functionality

From: K. Y. Srinivasan Signed-off-by: K. Y. Srinivasan --- drivers/hv/channel_mgmt.c | 11 +++ include/linux/hyperv.h|7 --- 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/hv/channel_mgmt.c

[PATCH 07/15] hv: allocate synic pages for all present CPUs

From: Vitaly Kuznetsov It may happen that not all CPUs are online when we do hv_synic_alloc() and in case more CPUs come online later we may try accessing these allocated structures. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv.c |4 ++-- 1 files

[PATCH 03/15] hyperv: Fix spelling of HV_UNKOWN

From: Haiyang Zhang Changed it to HV_UNKNOWN Signed-off-by: Haiyang Zhang Signed-off-by: K. Y. Srinivasan --- drivers/hv/channel_mgmt.c |6 +++--- include/linux/hyperv.h|2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/hv/channel_mgmt.c

[PATCH 01/15] Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post_msg()

From: Vitaly Kuznetsov DoS protection conditions were altered in WS2016 and now it's easy to get -EAGAIN returned from vmbus_post_msg() (e.g. when we try changing MTU on a netvsc device in a loop). All vmbus_post_msg() callers don't retry the operation and we usually end up with a non-functional

[PATCH 11/15] hv: make CPU offlining prevention fine-grained

From: Vitaly Kuznetsov Since commit e513229b4c38 ("Drivers: hv: vmbus: prevent cpu offlining on newer hypervisors") cpu offlining was disabled. It is still true that we can't offline CPUs which have VMBus channels bound to them but we may have 'free' CPUs (e.v. we booted with maxcpus= parameter

[PATCH 05/15] Drivers: hv: vmbus: Enhance the rescind callback functionality

From: K. Y. Srinivasan Signed-off-by: K. Y. Srinivasan --- drivers/hv/channel_mgmt.c | 11 +++ include/linux/hyperv.h|7 --- 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index f9c5827..d83c1ac 100644

[PATCH 06/15] hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels()

From: Vitaly Kuznetsov "kernel BUG at drivers/hv/channel_mgmt.c:350!" is observed when hv_vmbus module is unloaded. BUG_ON() was introduced in commit 85d9aa705184 ("Drivers: hv: vmbus: add an API vmbus_hvsock_device_unregister()") as vmbus_free_channels() codepath was apparently forgotten.

[PATCH 10/15] hv: switch to cpuhp state machine for synic init/cleanup

From: Vitaly Kuznetsov To make it possible to online/offline CPUs switch to cpuhp infrastructure for doing hv_synic_init()/hv_synic_cleanup(). Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv.c | 15 +++ drivers/hv/hyperv_vmbus.h |

[PATCH 09/15] hv: change clockevents unbind tactics

From: Vitaly Kuznetsov To get prepared to CPU offlining support we need co change the way how we unbind clockevent devices. As one CPU may go online/offline multiple times we need to bind it in hv_synic_init() and unbind it in hv_synic_cleanup(). There is an additional

[PATCH 09/15] hv: change clockevents unbind tactics

From: Vitaly Kuznetsov To get prepared to CPU offlining support we need co change the way how we unbind clockevent devices. As one CPU may go online/offline multiple times we need to bind it in hv_synic_init() and unbind it in hv_synic_cleanup(). There is an additional corner case: when we

[PATCH V3 13/14] Drivers: hv: vmbus: On write cleanup the logic to interrupt the host

ritten anything. This is a rare -* enough condition that it should not matter. -* NOTE: in this case, the hvsock channel is an exception, because -* it looks the host side's hvsock implementation has a throttling -* mechanism which can hurt the performance otherwise. -

[PATCH V3 13/14] Drivers: hv: vmbus: On write cleanup the logic to interrupt the host

tion that it should not matter. -* NOTE: in this case, the hvsock channel is an exception, because -* it looks the host side's hvsock implementation has a throttling -* mechanism which can hurt the performance otherwise. - * -* KYS: Oct. 30, 2016: -* It

[PATCH V3 05/14] Drivers: hv: balloon: Add logging for dynamic memory operations

From: Alex Ng Added logging to help troubleshoot common ballooning, hot add, and versioning issues. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_balloon.c | 31

[PATCH V3 01/14] Drivers: hv: ring_buffer: count on wrap around mappings in get_next_pkt_raw() (v2)

From: Vitaly Kuznetsov With wrap around mappings in place we can always provide drivers with direct links to packets on the ring buffer, even when they wrap around. Do the required updates to get_next_pkt_raw()/put_pkt_raw() The first version of this commit was reverted

[PATCH V3 05/14] Drivers: hv: balloon: Add logging for dynamic memory operations

From: Alex Ng Added logging to help troubleshoot common ballooning, hot add, and versioning issues. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_balloon.c | 31 --- 1 files changed, 28 insertions(+), 3 deletions(-) diff --git

[PATCH V3 01/14] Drivers: hv: ring_buffer: count on wrap around mappings in get_next_pkt_raw() (v2)

From: Vitaly Kuznetsov With wrap around mappings in place we can always provide drivers with direct links to packets on the ring buffer, even when they wrap around. Do the required updates to get_next_pkt_raw()/put_pkt_raw() The first version of this commit was reverted (65a532f3d50a) to deal

[PATCH V3 02/14] Drivers: hv: utils: reduce HV_UTIL_NEGO_TIMEOUT timeout

From: Vitaly Kuznetsov 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

[PATCH V3 02/14] Drivers: hv: utils: reduce HV_UTIL_NEGO_TIMEOUT timeout

From: Vitaly Kuznetsov 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 Signed-off-by: K. Y.

[PATCH V3 09/14] tools: hv: remove unnecessary link flag

From: Weibing Zhang The link flag pthread is not needed. Signed-off-by: Weibing Zhang Signed-off-by: K. Y. Srinivasan --- tools/hv/Makefile |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git

[PATCH V3 08/14] Drivers: hv: balloon: Fix info request to show max page count

From: Alex Ng Balloon driver was only printing the size of the info blob and not the actual content. This fixes it so that the info blob (max page count as configured in Hyper-V) is printed out. Signed-off-by: Alex Ng Signed-off-by: K. Y.

[PATCH V3 09/14] tools: hv: remove unnecessary link flag

From: Weibing Zhang The link flag pthread is not needed. Signed-off-by: Weibing Zhang Signed-off-by: K. Y. Srinivasan --- tools/hv/Makefile |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/tools/hv/Makefile b/tools/hv/Makefile index a8c4644..0d1e61b 100644 ---

[PATCH V3 08/14] Drivers: hv: balloon: Fix info request to show max page count

From: Alex Ng Balloon driver was only printing the size of the info blob and not the actual content. This fixes it so that the info blob (max page count as configured in Hyper-V) is printed out. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_balloon.c |9

[PATCH V3 06/14] Drivers: hv: vss: Improve log messages.

From: Alex Ng Adding log messages to help troubleshoot error cases and transaction handling. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_snapshot.c | 25 +++-- 1 files

[PATCH V3 10/14] tools: hv: fix a compile warning in snprintf

From: Weibing Zhang hv_kvp_daemon.c: In function .kvp_mac_to_if_name.: hv_kvp_daemon.c:705:2: warning: format not a string literal and no format arguments [-Wformat-security] snprintf(dev_id, sizeof(dev_id), kvp_net_dir); ^ hv_kvp_daemon.c:705:2: warning: format not

[PATCH V3 06/14] Drivers: hv: vss: Improve log messages.

From: Alex Ng Adding log messages to help troubleshoot error cases and transaction handling. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_snapshot.c | 25 +++-- 1 files changed, 19 insertions(+), 6 deletions(-) diff --git

[PATCH V3 10/14] tools: hv: fix a compile warning in snprintf

From: Weibing Zhang hv_kvp_daemon.c: In function .kvp_mac_to_if_name.: hv_kvp_daemon.c:705:2: warning: format not a string literal and no format arguments [-Wformat-security] snprintf(dev_id, sizeof(dev_id), kvp_net_dir); ^ hv_kvp_daemon.c:705:2: warning: format not a string literal and no

[PATCH V3 11/14] tools: hv: remove unnecessary header files and netlink related code

From: Weibing Zhang Remove unnecessary header files and netlink related code as the daemons do not use netlink to communicate with the kernel now. Signed-off-by: Weibing Zhang Signed-off-by: K. Y. Srinivasan ---

[PATCH V3 11/14] tools: hv: remove unnecessary header files and netlink related code

From: Weibing Zhang Remove unnecessary header files and netlink related code as the daemons do not use netlink to communicate with the kernel now. Signed-off-by: Weibing Zhang Signed-off-by: K. Y. Srinivasan --- tools/hv/hv_fcopy_daemon.c |7 --- tools/hv/hv_kvp_daemon.c |7

[PATCH V3 14/14] Drivers: hv: vmbus: On the read path cleanup the logic to interrupt the host

From: K. Y. Srinivasan Signal the host when we determine the host is to be signaled - on th read path. The currrent code determines the need to signal in the ringbuffer code and actually issues the signal elsewhere. This can result in the host viewing this interrupt as

[PATCH V3 07/14] Drivers: hv: vss: Operation timeouts should match host expectation

From: Alex Ng Increase the timeout of backup operations. When system is under I/O load, it needs more time to freeze. These timeout values should also match the host timeout values more closely. Signed-off-by: Alex Ng Signed-off-by: K. Y.

[PATCH V3 04/14] Drivers: hv: balloon: Disable hot add when CONFIG_MEMORY_HOTPLUG is not set

From: Alex Ng If the guest does not support memory hotplugging, it should respond to the host with zero pages added and successful result code. This signals to the host that hotplugging is not supported and the host will avoid sending future hot-add requests.

[PATCH V3 14/14] Drivers: hv: vmbus: On the read path cleanup the logic to interrupt the host

From: K. Y. Srinivasan Signal the host when we determine the host is to be signaled - on th read path. The currrent code determines the need to signal in the ringbuffer code and actually issues the signal elsewhere. This can result in the host viewing this interrupt as spurious since the host

[PATCH V3 07/14] Drivers: hv: vss: Operation timeouts should match host expectation

From: Alex Ng Increase the timeout of backup operations. When system is under I/O load, it needs more time to freeze. These timeout values should also match the host timeout values more closely. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_snapshot.c |8

[PATCH V3 04/14] Drivers: hv: balloon: Disable hot add when CONFIG_MEMORY_HOTPLUG is not set

From: Alex Ng If the guest does not support memory hotplugging, it should respond to the host with zero pages added and successful result code. This signals to the host that hotplugging is not supported and the host will avoid sending future hot-add requests. Signed-off-by: Alex Ng

[PATCH V3 03/14] Drivers: hv: utils: Fix the mapping between host version and protocol to use

From: Alex Ng We should intentionally declare the protocols to use for every known host and default to using the latest protocol if the host is unknown or new. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan ---

[PATCH V3 03/14] Drivers: hv: utils: Fix the mapping between host version and protocol to use

From: Alex Ng We should intentionally declare the protocols to use for every known host and default to using the latest protocol if the host is unknown or new. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- V3: Addressed Stephen's comment drivers/hv/hv_util.c |9

[PATCH V3 12/14] Drivers: hv: vmbus: Base host signaling strictly on the ring state

g * mechanism which can hurt the performance otherwise. +* +* KYS: Oct. 30, 2016: +* It looks like Windows hosts have logic to deal with DOS attacks that +* can be triggered if it receives interrupts when it is not expecting +* the interrupt. The h

[PATCH V3 12/14] Drivers: hv: vmbus: Base host signaling strictly on the ring state

erformance otherwise. + * +* KYS: Oct. 30, 2016: +* It looks like Windows hosts have logic to deal with DOS attacks that +* can be triggered if it receives interrupts when it is not expecting +* the interrupt. The host expects interrupts only when the ring +* tr

[PATCH V3 00/14] Drivers: hv: Some miscellaneous fixes and enhancements

From: K. Y. Srinivasan Some miscellaneous fixes and enhancements. V2: Fixed a build issue reported by Greg. Only Patch # 13 is affected. V3: Address Stephen's comment. Only patch 3 is affected. Alex Ng (6): Drivers: hv: utils: Fix the mapping between host version and

[PATCH V3 00/14] Drivers: hv: Some miscellaneous fixes and enhancements

From: K. Y. Srinivasan Some miscellaneous fixes and enhancements. V2: Fixed a build issue reported by Greg. Only Patch # 13 is affected. V3: Address Stephen's comment. Only patch 3 is affected. Alex Ng (6): Drivers: hv: utils: Fix the mapping between host version and protocol to use

[PATCH V2 09/14] tools: hv: remove unnecessary link flag

From: Weibing Zhang The link flag pthread is not needed. Signed-off-by: Weibing Zhang Signed-off-by: K. Y. Srinivasan --- tools/hv/Makefile |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git

[PATCH V2 05/14] Drivers: hv: balloon: Add logging for dynamic memory operations

From: Alex Ng Added logging to help troubleshoot common ballooning, hot add, and versioning issues. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_balloon.c | 31

[PATCH V2 09/14] tools: hv: remove unnecessary link flag

From: Weibing Zhang The link flag pthread is not needed. Signed-off-by: Weibing Zhang Signed-off-by: K. Y. Srinivasan --- tools/hv/Makefile |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/tools/hv/Makefile b/tools/hv/Makefile index a8c4644..0d1e61b 100644 ---

[PATCH V2 05/14] Drivers: hv: balloon: Add logging for dynamic memory operations

From: Alex Ng Added logging to help troubleshoot common ballooning, hot add, and versioning issues. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_balloon.c | 31 --- 1 files changed, 28 insertions(+), 3 deletions(-) diff --git

[PATCH V2 02/14] Drivers: hv: utils: reduce HV_UTIL_NEGO_TIMEOUT timeout

From: Vitaly Kuznetsov 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

[PATCH V2 03/14] Drivers: hv: utils: Fix the mapping between host version and protocol to use

From: Alex Ng We should intentionally declare the protocols to use for every known host and default to using the latest protocol if the host is unknown or new. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan ---

[PATCH V2 02/14] Drivers: hv: utils: reduce HV_UTIL_NEGO_TIMEOUT timeout

From: Vitaly Kuznetsov 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 Signed-off-by: K. Y.

[PATCH V2 03/14] Drivers: hv: utils: Fix the mapping between host version and protocol to use

From: Alex Ng We should intentionally declare the protocols to use for every known host and default to using the latest protocol if the host is unknown or new. Signed-off-by: Alex Ng Signed-off-by: K. Y. Srinivasan --- drivers/hv/hv_util.c |9 ++--- 1 files changed, 6 insertions(+),

[PATCH V2 10/14] tools: hv: fix a compile warning in snprintf

From: Weibing Zhang hv_kvp_daemon.c: In function .kvp_mac_to_if_name.: hv_kvp_daemon.c:705:2: warning: format not a string literal and no format arguments [-Wformat-security] snprintf(dev_id, sizeof(dev_id), kvp_net_dir); ^ hv_kvp_daemon.c:705:2: warning: format not

[PATCH V2 01/14] Drivers: hv: ring_buffer: count on wrap around mappings in get_next_pkt_raw() (v2)

From: Vitaly Kuznetsov With wrap around mappings in place we can always provide drivers with direct links to packets on the ring buffer, even when they wrap around. Do the required updates to get_next_pkt_raw()/put_pkt_raw() The first version of this commit was reverted

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