[PATCH 0/6] PCI: hv: VMbus requestor and related fixes

Andrea Parri (Microsoft)
2022-04-07T04:32:10Z

Changes since RFC [1]:

- Rebase on hyperv-fixes (although more likely -next material)
- Fix handling of messages with transaction ID of 0
- Avoid reading trans_id from the ring buffer
- Move hv_pci_request_addr_match()&co. to VMbus
- Introduce primitives to lock and unlock the requestor
- Improve comments and log messages

The series got bigger (mainly due to a certain re-factoring in VMbus): the
hv_pci changes are in patches #2 and #6. Let me stress that the "PCI: hv"
patches and the "Drivers: hv: vmbus" patches below are inter-dependent.

[1] https://lkml.kernel.org/r/20220328144244.100228-1-parri.andrea@gmail.com

Thanks,
Andrea

Andrea Parri (Microsoft) (6):
Drivers: hv: vmbus: Fix handling of messages with transaction ID of
zero
PCI: hv: Use vmbus_requestor to generate transaction IDs for VMbus
hardening
Drivers: hv: vmbus: Introduce vmbus_sendpacket_getid()
Drivers: hv: vmbus: Introduce vmbus_request_addr_match()
Drivers: hv: vmbus: Introduce {lock,unlock}_requestor()
PCI: hv: Fix synchronization between channel callback and
hv_compose_msi_msg()

drivers/hv/channel.c | 116 +++++++++++++++++++++-------
drivers/hv/hyperv_vmbus.h | 2 +-
drivers/hv/ring_buffer.c | 14 +++-
drivers/pci/controller/pci-hyperv.c | 68 ++++++++++++----
include/linux/hyperv.h | 27 +++++++
5 files changed, 179 insertions(+), 48 deletions(-)

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2.25.1