Re: [RFC PATCH v2 0/4] Use ACPI PCI hot-plug for q35

[Michael S. Tsirkin]

On Tue, Aug 18, 2020 at 11:52:23PM +0200, Julia Suvorova wrote:
> PCIe native hot-plug has numerous problems with racing events and 
> unpredictable
> guest behaviour (Windows). Switching to ACPI hot-plug for now.
> 
> Tested on RHEL 8 and Windows 2019.
> pxb-pcie is not yet supported.

Julia, pls update expected acpi tables, see tests/qtest/bios-tables-test.c

> v2:
>     * new ioport range for acpiphp [Gerd]
>     * drop find_pci_host() [Igor]
>     * explain magic numbers in _OSC [Igor]
>     * drop build_q35_pci_hotplug() wrapper [Igor]
> 
> Julia Suvorova (4):
>   hw/acpi/ich9: Trace ich9_gpe_readb()/writeb()
>   hw/i386/acpi-build: Add ACPI PCI hot-plug methods to q35
>   hw/i386/acpi-build: Turn off support of PCIe native hot-plug and SHPC
>     in _OSC
>   hw/acpi/ich9: Enable ACPI PCI hot-plug
> 
>  hw/i386/acpi-build.h    | 12 ++++++++++
>  include/hw/acpi/ich9.h  |  3 +++
>  include/hw/acpi/pcihp.h |  3 ++-
>  hw/acpi/ich9.c          | 52 ++++++++++++++++++++++++++++++++++++++++-
>  hw/acpi/pcihp.c         | 15 ++++++++----
>  hw/acpi/piix4.c         |  2 +-
>  hw/i386/acpi-build.c    | 48 +++++++++++++++++++++++--------------
>  hw/i386/pc.c            |  1 +
>  hw/acpi/trace-events    |  4 ++++
>  9 files changed, 114 insertions(+), 26 deletions(-)
> 
> -- 
> 2.25.4