[RFC PATCH 00/11] VMBus channel interrupt reassignment

From: "Andrea Parri (Microsoft)" <parri.andrea@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: "K . Y . Srinivasan" <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	Wei Liu <wei.liu@kernel.org>,
	linux-hyperv@vger.kernel.org,
	Michael Kelley <mikelley@microsoft.com>,
	Dexuan Cui <decui@microsoft.com>,
	Boqun Feng <boqun.feng@gmail.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	"Andrea Parri (Microsoft)" <parri.andrea@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Andrew Murray <amurray@thegoodpenguin.co.uk>,
	Bjorn Helgaas <bhelgaas@google.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>
Subject: [RFC PATCH 00/11] VMBus channel interrupt reassignment
Date: Wed, 25 Mar 2020 23:54:54 +0100	[thread overview]
Message-ID: <20200325225505.23998-1-parri.andrea@gmail.com> (raw)

Hi all,

This series introduces changes in the VMBus drivers to reassign (at
runtime) the CPU that a VMbus channel will interrupt.  This feature
can be used for load balancing or other purposes, e.g. to offline a
given vCPU (vCPUs with no interrupts assigned can be taken offline).

Thanks,
  Andrea

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Andrew Murray <amurray@thegoodpenguin.co.uk>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>

Andrea Parri (Microsoft) (11):
  Drivers: hv: vmbus: Always handle the VMBus messages on CPU0
  Drivers: hv: vmbus: Don't bind the offer&rescind works to a specific
    CPU
  Drivers: hv: vmbus: Replace the per-CPU channel lists with a global
    array of channels
  hv_netvsc: Disable NAPI before closing the VMBus channel
  hv_utils: Always execute the fcopy and vss callbacks in a tasklet
  Drivers: hv: vmbus: Use a spin lock for synchronizing channel
    scheduling vs. channel removal
  PCI: hv: Prepare hv_compose_msi_msg() for the
    VMBus-channel-interrupt-to-vCPU reassignment functionality
  Drivers: hv: vmbus: Remove the unused HV_LOCALIZED channel affinity
    logic
  Drivers: hv: vmbus: Synchronize init_vp_index() vs. CPU hotplug
  Drivers: hv: vmbus: Introduce the CHANNELMSG_MODIFYCHANNEL message
    type
  scsi: storvsc: Re-init stor_chns when a channel interrupt is
    re-assigned

 drivers/hv/channel.c                |  58 +++--
 drivers/hv/channel_mgmt.c           | 326 ++++++++++++++--------------
 drivers/hv/connection.c             |  58 +----
 drivers/hv/hv.c                     |  16 +-
 drivers/hv/hv_fcopy.c               |   2 +-
 drivers/hv/hv_snapshot.c            |   2 +-
 drivers/hv/hv_trace.h               |  19 ++
 drivers/hv/hyperv_vmbus.h           |  32 ++-
 drivers/hv/vmbus_drv.c              | 241 ++++++++++++++++----
 drivers/net/hyperv/netvsc.c         |   7 +-
 drivers/pci/controller/pci-hyperv.c |  44 ++--
 drivers/scsi/storvsc_drv.c          |  95 +++++++-
 include/linux/hyperv.h              |  51 ++---
 13 files changed, 599 insertions(+), 352 deletions(-)

-- 
2.24.0