linux-hyperv.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [PATCH v6 0/8] PCI: hv: Support host bridge probing on ARM64
@ 2021-07-26 18:06 Boqun Feng
  2021-07-26 18:06 ` [PATCH v6 1/8] PCI: Introduce domain_nr in pci_host_bridge Boqun Feng
                   ` (11 more replies)
  0 siblings, 12 replies; 28+ messages in thread
From: Boqun Feng @ 2021-07-26 18:06 UTC (permalink / raw)
  To: Bjorn Helgaas, Arnd Bergmann, Marc Zyngier, Lorenzo Pieralisi
  Cc: Catalin Marinas, Will Deacon, K. Y. Srinivasan, Haiyang Zhang,
	Stephen Hemminger, Wei Liu, Dexuan Cui, Rob Herring,
	Krzysztof Wilczyński, Boqun Feng, linux-arm-kernel,
	linux-kernel, linux-hyperv, linux-pci, Sunil Muthuswamy,
	Mike Rapoport

Hi,

This is the v6 for the preparation of virtual PCI support on Hyper-V
ARM64, Previous versions:

v1:	https://lore.kernel.org/lkml/20210319161956.2838291-1-boqun.feng@gmail.com/
v2:	https://lore.kernel.org/lkml/20210503144635.2297386-1-boqun.feng@gmail.com/
v3:	https://lore.kernel.org/lkml/20210609163211.3467449-1-boqun.feng@gmail.com/
v4:	https://lore.kernel.org/lkml/20210714102737.198432-1-boqun.feng@gmail.com/
v5:	https://lore.kernel.org/lkml/20210720134429.511541-1-boqun.feng@gmail.com/

Changes since last version:

*	Rebase to 5.14-rc3

*	Comment fixes as suggested by Bjorn.

The basic problem we need to resolve is that ARM64 is an arch with
PCI_DOMAINS_GENERIC=y, so the bus sysdata is pci_config_window. However,
Hyper-V PCI provides a paravirtualized PCI interface, so there is no
actual pci_config_window for a PCI host bridge, so no information can be
retrieve from the pci_config_window of a Hyper-V virtual PCI bus. Also
there is no corresponding ACPI device for the Hyper-V PCI root bridge,
which introduces a special case when trying to find the ACPI device from
the sysdata (see patch #3).

With this patchset, we could enable the virtual PCI on Hyper-V ARM64
guest with other code under development.

Comments and suggestions are welcome.

Regards,
Boqun

Arnd Bergmann (1):
  PCI: hv: Generify PCI probing

Boqun Feng (7):
  PCI: Introduce domain_nr in pci_host_bridge
  PCI: Support populating MSI domains of root buses via bridges
  arm64: PCI: Restructure pcibios_root_bridge_prepare()
  arm64: PCI: Support root bridge preparation for Hyper-V
  PCI: hv: Set ->domain_nr of pci_host_bridge at probing time
  PCI: hv: Set up MSI domain at bridge probing time
  PCI: hv: Turn on the host bridge probing on ARM64

 arch/arm64/kernel/pci.c             | 29 +++++++---
 drivers/pci/controller/pci-hyperv.c | 86 +++++++++++++++++------------
 drivers/pci/probe.c                 | 12 +++-
 include/linux/pci.h                 | 11 ++++
 4 files changed, 93 insertions(+), 45 deletions(-)

-- 
2.32.0


^ permalink raw reply	[flat|nested] 28+ messages in thread

end of thread, other threads:[~2021-08-23 12:50 UTC | newest]

Thread overview: 28+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-26 18:06 [PATCH v6 0/8] PCI: hv: Support host bridge probing on ARM64 Boqun Feng
2021-07-26 18:06 ` [PATCH v6 1/8] PCI: Introduce domain_nr in pci_host_bridge Boqun Feng
2021-07-26 18:06 ` [PATCH v6 2/8] PCI: Support populating MSI domains of root buses via bridges Boqun Feng
2021-07-27 16:14   ` Bjorn Helgaas
2021-07-26 18:06 ` [PATCH v6 3/8] arm64: PCI: Restructure pcibios_root_bridge_prepare() Boqun Feng
2021-08-23  9:43   ` Catalin Marinas
2021-07-26 18:06 ` [PATCH v6 4/8] arm64: PCI: Support root bridge preparation for Hyper-V Boqun Feng
2021-08-19 16:13   ` Boqun Feng
2021-08-20 17:49     ` Catalin Marinas
2021-08-23  9:12       ` Lorenzo Pieralisi
2021-08-23  9:43   ` Catalin Marinas
2021-07-26 18:06 ` [PATCH v6 5/8] PCI: hv: Generify PCI probing Boqun Feng
2021-07-26 18:06 ` [PATCH v6 6/8] PCI: hv: Set ->domain_nr of pci_host_bridge at probing time Boqun Feng
2021-07-26 18:06 ` [PATCH v6 7/8] PCI: hv: Set up MSI domain at bridge " Boqun Feng
2021-07-26 18:06 ` [PATCH v6 8/8] PCI: hv: Turn on the host bridge probing on ARM64 Boqun Feng
2021-08-03 17:14   ` Lorenzo Pieralisi
2021-08-09 14:38     ` Boqun Feng
2021-08-09 15:53       ` Lorenzo Pieralisi
2021-08-19 12:19         ` Boqun Feng
2021-07-27 16:12 ` [PATCH v6 0/8] PCI: hv: Support " Bjorn Helgaas
2021-08-02  8:13   ` Boqun Feng
2021-08-02  8:15 ` Boqun Feng
2021-08-02 23:05   ` Bjorn Helgaas
2021-08-19 14:17 ` Lorenzo Pieralisi
2021-08-19 15:47   ` Boqun Feng
2021-08-23 10:10     ` Lorenzo Pieralisi
2021-08-23 12:49       ` Boqun Feng
2021-08-23 10:02 ` Lorenzo Pieralisi

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).