Re: [PATCH 0/4] ICH9 root PCI hotplug

[Igor Mammedov]

On Wed, 15 Nov 2023 17:18:53 +0000
Thierry Escande <thierry.escande@vates.tech> wrote:

> Hi,
> 
> This series fixes acpi_hotplug_bridge accessor names, adds new accessors
> for acpi-root-pci-hotplug property, and enables root PCI hotplug by
> default for Q35 machine.

hotplug on Q35 hostbridge is not implemented intentionally
to keep machine close to the real world.

PCIe spec 3.1a, 1.3.2.3. Root Complex Integrated Endpoint Rules
"
A Root Complex Integrated Endpoint may not be hot-plugged independent of the 
Root
Complex as a whole.
"
)

PS:
but patch 1/4 is good cleanup, pls include Reviewed-by's and resend it
as a separate patch after 8.2 has been released (so it wouldn't get lost in the 
traffic).

> 
> Thierry Escande (4):
>   ich9: Remove unused hotplug field from ICH9LPCPMRegs struct
>   ich9: Renamed use_acpi_hotplug_bridge accessors
>   ich9: Add accessors for acpi-root-pci-hotplug
>   ich9: Enable root PCI hotplug by default
> 
>  hw/acpi/ich9.c         | 23 +++++++++++++++++++++--
>  include/hw/acpi/ich9.h |  1 -
>  2 files changed, 21 insertions(+), 3 deletions(-)
>