Re: [PATCH for 6.2 v2 0/5] Fix Q35 ACPI PCI Hot-plug I/O issues

[Igor Mammedov <imammedo@redhat.com>]

On Fri, 12 Nov 2021 04:47:05 -0500
"Michael S. Tsirkin" <mst@redhat.com> wrote:

> On Wed, Nov 10, 2021 at 04:11:35PM -0500, Igor Mammedov wrote:
> > Changelog:
> >   v2:
> >     * simplify [1/5] and rename property to x-native-hotplug (CC stable)
> >     * [4/5]
> >        - rename function parameter to reflect actual action
> >        - drop local 'hotplug' variable and opencode statement 
> >     * test with SeaBIOS/OVMF and Linux guest,
> >       Windows also works with SeaBIOS, can't install it in EFI
> >       mode on current master (it's stuck when formatting disk/or
> >       copying files to hdd).
> > 
> > Attempt [1] to fix I/O allocation with the 'reserve-io' hint on each
> > pcie-root-port resulted in regression [2-3]. This patchset aims to fix
> > it by addressing the root cause of the problem - the disabled PCIe
> > Slot HPC bit.
> > 
> > [1] 'hw/pcie-root-port: Fix hotplug for PCI devices requiring IO'
> > [2] https://gitlab.com/qemu-project/qemu/-/issues/641
> > [3] https://bugzilla.redhat.com/show_bug.cgi?id=2006409
> > 
> > CC: kraxel@redhat.com  
> 
> Igor are you going to post v3 with a fixup of the expected tables?
> Thanks!

I'll post in a short while,
it seems going ahead with this is less risky as it resolves remaining
issues (hotplug with edk2 and seabios boot loop) than just
reverting to native and bringing back old issues.

> > Igor Mammedov (1):
> >   pcie: rename 'native-hotplug' to 'x-native-hotplug'
> > 
> > Julia Suvorova (4):
> >   hw/acpi/ich9: Add compat prop to keep HPC bit set for 6.1 machine type
> >   bios-tables-test: Allow changes in DSDT ACPI tables
> >   hw/i386/acpi-build: Deny control on PCIe Native Hot-plug in _OSC
> >   bios-tables-test: Update golden binaries
> > 
> >  include/hw/acpi/ich9.h                    |   1 +
> >  hw/acpi/ich9.c                            |  18 ++++++++++++++++++
> >  hw/i386/acpi-build.c                      |  12 ++++++++----
> >  hw/i386/pc.c                              |   2 ++
> >  hw/i386/pc_q35.c                          |   9 +++++++--
> >  hw/pci/pcie_port.c                        |   2 +-
> >  tests/data/acpi/q35/DSDT                  | Bin 8289 -> 8289 bytes
> >  tests/data/acpi/q35/DSDT.acpihmat         | Bin 9614 -> 9614 bytes
> >  tests/data/acpi/q35/DSDT.bridge           | Bin 11003 -> 11003 bytes
> >  tests/data/acpi/q35/DSDT.cphp             | Bin 8753 -> 8753 bytes
> >  tests/data/acpi/q35/DSDT.dimmpxm          | Bin 9943 -> 9943 bytes
> >  tests/data/acpi/q35/DSDT.dmar             | Bin 0 -> 8289 bytes
> >  tests/data/acpi/q35/DSDT.ipmibt           | Bin 8364 -> 8364 bytes
> >  tests/data/acpi/q35/DSDT.ivrs             | Bin 8306 -> 8306 bytes
> >  tests/data/acpi/q35/DSDT.memhp            | Bin 9648 -> 9648 bytes
> >  tests/data/acpi/q35/DSDT.mmio64           | Bin 9419 -> 9419 bytes
> >  tests/data/acpi/q35/DSDT.multi-bridge     | Bin 8583 -> 8583 bytes
> >  tests/data/acpi/q35/DSDT.nohpet           | Bin 8147 -> 8147 bytes
> >  tests/data/acpi/q35/DSDT.nosmm            | Bin 0 -> 8289 bytes
> >  tests/data/acpi/q35/DSDT.numamem          | Bin 8295 -> 8295 bytes
> >  tests/data/acpi/q35/DSDT.smm-compat       | Bin 0 -> 8289 bytes
> >  tests/data/acpi/q35/DSDT.smm-compat-nosmm | Bin 0 -> 8289 bytes
> >  tests/data/acpi/q35/DSDT.tis.tpm12        | Bin 8894 -> 8894 bytes
> >  tests/data/acpi/q35/DSDT.tis.tpm2         | Bin 8894 -> 8894 bytes
> >  tests/data/acpi/q35/DSDT.xapic            | Bin 35652 -> 35652 bytes
> >  25 files changed, 37 insertions(+), 7 deletions(-)
> >  create mode 100644 tests/data/acpi/q35/DSDT.dmar
> >  create mode 100644 tests/data/acpi/q35/DSDT.nosmm
> >  create mode 100644 tests/data/acpi/q35/DSDT.smm-compat
> >  create mode 100644 tests/data/acpi/q35/DSDT.smm-compat-nosmm
> > 
> > -- 
> > 2.27.0  
>