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Re: [PATCH for 9.1 v9 00/11] hw/pci: SR-IOV related fixes and improvemen
From: |
Michael S. Tsirkin |
Subject: |
Re: [PATCH for 9.1 v9 00/11] hw/pci: SR-IOV related fixes and improvements |
Date: |
Mon, 27 May 2024 04:18:10 -0400 |
On Fri, Mar 15, 2024 at 12:57:47PM +0900, Akihiko Odaki wrote:
> I submitted a RFC series[1] to add support for SR-IOV emulation to
> virtio-net-pci. During the development of the series, I fixed some
> trivial bugs and made improvements that I think are independently
> useful. This series extracts those fixes and improvements from the RFC
> series.
I picked 1-8 but still see no point in 9-11.
Actually checking whether value was specified seems cleaner
and more robust than tricks using a special value.
I would like to actually see it generalized so we do not
need to use special hacks like on/off/auto.
> [1]: https://patchew.org/QEMU/20231210-sriov-v2-0-b959e8a6dfaf@daynix.com/
>
> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
> ---
> Changes in v9:
> - Rebased.
> - Restored '#include "qapi/error.h"' (Michael S. Tsirkin)
> - Added patch "pcie_sriov: Ensure VF function number does not overflow"
> to fix abortion with wrong PF addr.
> - Link to v8:
> https://lore.kernel.org/r/20240228-reuse-v8-0-282660281e60@daynix.com
>
> Changes in v8:
> - Clarified that "hw/pci: Replace -1 with UINT32_MAX for romsize" is
> not a bug fix. (Markus Armbruster)
> - Squashed patch "vfio: Avoid inspecting option QDict for rombar" into
> "hw/pci: Determine if rombar is explicitly enabled".
> (Markus Armbruster)
> - Noted the minor semantics change for patch "hw/pci: Determine if
> rombar is explicitly enabled". (Markus Armbruster)
> - Link to v7:
> https://lore.kernel.org/r/20240224-reuse-v7-0-29c14bcb952e@daynix.com
>
> Changes in v7:
> - Replaced -1 with UINT32_MAX when expressing uint32_t.
> (Markus Armbruster)
> - Added patch "hw/pci: Replace -1 with UINT32_MAX for romsize".
> - Link to v6:
> https://lore.kernel.org/r/20240220-reuse-v6-0-2e42a28b0cf2@daynix.com
>
> Changes in v6:
> - Fixed migration.
> - Added patch "pcie_sriov: Do not manually unrealize".
> - Restored patch "pcie_sriov: Release VFs failed to realize" that was
> missed in v5.
> - Link to v5:
> https://lore.kernel.org/r/20240218-reuse-v5-0-e4fc1c19b5a9@daynix.com
>
> Changes in v5:
> - Added patch "hw/pci: Always call pcie_sriov_pf_reset()".
> - Added patch "pcie_sriov: Reset SR-IOV extended capability".
> - Removed a reference to PCI_SRIOV_CTRL_VFE in hw/nvme.
> (Michael S. Tsirkin)
> - Noted the impact on the guest of patch "pcie_sriov: Do not reset
> NumVFs after unregistering VFs". (Michael S. Tsirkin)
> - Changed to use pcie_sriov_num_vfs().
> - Restored pci_set_power() and changed it to call pci_set_enabled() only
> for PFs with an expalanation. (Michael S. Tsirkin)
> - Reordered patches.
> - Link to v4:
> https://lore.kernel.org/r/20240214-reuse-v4-0-89ad093a07f4@daynix.com
>
> Changes in v4:
> - Reverted the change to pci_rom_bar_explicitly_enabled().
> (Michael S. Tsirkin)
> - Added patch "pcie_sriov: Do not reset NumVFs after unregistering VFs".
> - Added patch "hw/nvme: Refer to dev->exp.sriov_pf.num_vfs".
> - Link to v3:
> https://lore.kernel.org/r/20240212-reuse-v3-0-8017b689ce7f@daynix.com
>
> Changes in v3:
> - Extracted patch "hw/pci: Use -1 as a default value for rombar" from
> patch "hw/pci: Determine if rombar is explicitly enabled"
> (Philippe Mathieu-Daudé)
> - Added an audit result of PCIDevice::rom_bar to the message of patch
> "hw/pci: Use -1 as a default value for rombar"
> (Philippe Mathieu-Daudé)
> - Link to v2:
> https://lore.kernel.org/r/20240210-reuse-v2-0-24ba2a502692@daynix.com
>
> Changes in v2:
> - Reset after enabling a function so that NVMe VF state gets updated.
> - Link to v1:
> https://lore.kernel.org/r/20240203-reuse-v1-0-5be8c5ce6338@daynix.com
>
> ---
> Akihiko Odaki (11):
> hw/pci: Rename has_power to enabled
> pcie_sriov: Do not manually unrealize
> pcie_sriov: Ensure VF function number does not overflow
> pcie_sriov: Reuse SR-IOV VF device instances
> pcie_sriov: Release VFs failed to realize
> pcie_sriov: Remove num_vfs from PCIESriovPF
> pcie_sriov: Register VFs after migration
> hw/pci: Replace -1 with UINT32_MAX for romsize
> hw/pci: Use UINT32_MAX as a default value for rombar
> hw/pci: Determine if rombar is explicitly enabled
> hw/qdev: Remove opts member
>
> docs/pcie_sriov.txt | 8 ++-
> include/hw/pci/pci.h | 2 +-
> include/hw/pci/pci_device.h | 22 ++++++-
> include/hw/pci/pcie_sriov.h | 9 +--
> include/hw/qdev-core.h | 4 --
> hw/core/qdev.c | 1 -
> hw/net/igb.c | 13 +++-
> hw/nvme/ctrl.c | 24 ++++---
> hw/pci/pci.c | 31 +++++----
> hw/pci/pci_host.c | 4 +-
> hw/pci/pcie_sriov.c | 149
> ++++++++++++++++++++++++--------------------
> hw/vfio/pci.c | 3 +-
> hw/xen/xen_pt_load_rom.c | 2 +-
> system/qdev-monitor.c | 12 ++--
> hw/pci/trace-events | 2 +-
> 15 files changed, 172 insertions(+), 114 deletions(-)
> ---
> base-commit: ba49d760eb04630e7b15f423ebecf6c871b8f77b
> change-id: 20240129-reuse-faae22b11934
>
> Best regards,
> --
> Akihiko Odaki <akihiko.odaki@daynix.com>
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