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Re: [Qemu-devel] [PATCH v6 0/4] pcie: Add support for Single Root I/O Vi
From: |
Knut Omang |
Subject: |
Re: [Qemu-devel] [PATCH v6 0/4] pcie: Add support for Single Root I/O Virtualization |
Date: |
Thu, 22 Oct 2015 15:47:49 +0200 |
On Thu, 2015-10-22 at 16:14 +0300, Michael S. Tsirkin wrote:
> On Thu, Oct 22, 2015 at 10:01:31AM +0200, Knut Omang wrote:
> > This patch set implements generic support for SR/IOV as an
> > extension to the
> > core PCIe functionality, similar to the way other capabilities such
> > as AER
> > is implemented.
>
> We are in soft freeze now so I'd rather defer this until
> 2.5 is out.
Ok, I kind of suspected that the 2.5 train had left, no problem..
> This should give you some time to come up with an actual
> user for this API.
>
> If it helps, I can park these patches on a branch in my tree so
> you don't need to keep reposting them.
Yes, that would be great,
Thanks,
Knut
> > There is no implementation of any device that provides
> > SR/IOV support included, but I have implemented a test
> > example which can be found together with this patch set here:
> >
> > git://github.com/knuto/qemu.git sriov_patches_v6
> >
> > Testing with the example device was documented here:
> >
> > http://lists.nongnu.org/archive/html/qemu-devel/2014-08/msg05110.
> > html
> >
> > Changes since v5:
> > - Fix reset logic that got broken in v5. Reset logic is now equal
> > to
> > that of v4 except that two ambiguous initialization statements
> > (introduced during rebase) have been removed
> > - From private feedback, added observer functions for SR/IOV
> > values
> > in pcie_sriov.h. To ease access to the vf number, the SR/IOV VF
> > device
> > struct extension now caches this value.
> >
> > Changes since v4:
> > - Mostly based on feeback in Marcel Apfelbaum's review:
> > - The patch with changes to pci_regs.h got eliminated by rebase
> > - Added some documentation as an additional patch
> > - Some trivial fixes moved to separate patch
> > - Modified code to use error and trace functions instead of
> > printfs
> >
> > Changes since v3:
> > - Reworked 'pci: Update pci_regs header' to merge kernel version
> > improvements
> > with the current qemu version instead of copying from the
> > kernel version.
> >
> > Changes since v2:
> > - Rebased onto 090d0bfd
> > - Un-qdev'ified - avoids issues when resetting NUM_VFS
> > - Fixed handling of vf_offset/vf_stride
> >
> > Changes since v1:
> > - Rebased on top of latest master, eliminating prereqs.
> > - Implement proper support for VF_STRIDE, VF_OFFSET and
> > SUP_PGSIZE
> > Time better spent fixing it than explaining what the previous
> > limitations were.
> > - Added new first patch to fix pci bug related to this
> > - Split out patch to pci_default_config_write to a separate patch
> > 2
> > to highlight bug fix.
> > - Refactored out logic into new source files
> > hw/pci/pcie_sriov.c include/hw/pci/pcie_sriov.h
> > similar to pcie_aer.c/h.
> > - Rename functions and introduce structs to better separate
> > pf and vf functionality.
> > - Replaced is_vf member with pci_is_vf() function abstraction
> > - Fix numerous syntax, whitespace and comment issues
> > according to Michael's review.
> > - Fix memory leaks.
> > - Removed igb example device - a rebased version available
> > on github instead.
> >
> > Knut Omang (4):
> > pci: Make use of the devfn property when registering new devices
> > pcie: Add support for Single Root I/O Virtualization (SR/IOV)
> > pcie: Add some SR/IOV API documentation in docs/pcie_sriov.txt
> > pcie: A few minor fixes (type+code simplify)
> >
> > docs/pcie_sriov.txt | 115 ++++++++++++++++++
> > hw/pci/Makefile.objs | 2 +-
> > hw/pci/pci.c | 97 ++++++++++++----
> > hw/pci/pcie.c | 9 +-
> > hw/pci/pcie_sriov.c | 277
> > ++++++++++++++++++++++++++++++++++++++++++++
> > include/hw/pci/pci.h | 11 +-
> > include/hw/pci/pcie.h | 6 +
> > include/hw/pci/pcie_sriov.h | 67 +++++++++++
> > include/qemu/typedefs.h | 2 +
> > trace-events | 5 +
> > 10 files changed, 561 insertions(+), 30 deletions(-)
> > create mode 100644 docs/pcie_sriov.txt
> > create mode 100644 hw/pci/pcie_sriov.c
> > create mode 100644 include/hw/pci/pcie_sriov.h
> >
> > --
> > 2.4.3
- [Qemu-devel] [PATCH v6 0/4] pcie: Add support for Single Root I/O Virtualization, Knut Omang, 2015/10/22
- [Qemu-devel] [PATCH v6 1/4] pci: Make use of the devfn property when registering new devices, Knut Omang, 2015/10/22
- [Qemu-devel] [PATCH v6 4/4] pcie: A few minor fixes (type+code simplify), Knut Omang, 2015/10/22
- [Qemu-devel] [PATCH v6 2/4] pcie: Add support for Single Root I/O Virtualization (SR/IOV), Knut Omang, 2015/10/22
- [Qemu-devel] [PATCH v6 3/4] pcie: Add some SR/IOV API documentation in docs/pcie_sriov.txt, Knut Omang, 2015/10/22
- Re: [Qemu-devel] [PATCH v6 0/4] pcie: Add support for Single Root I/O Virtualization, Knut Omang, 2015/10/22
- Re: [Qemu-devel] [PATCH v6 0/4] pcie: Add support for Single Root I/O Virtualization, Michael S. Tsirkin, 2015/10/22
- Re: [Qemu-devel] [PATCH v6 0/4] pcie: Add support for Single Root I/O Virtualization,
Knut Omang <=