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hw/acpi/ich9: Add compat prop to keep HPC bit set for 6.1 machine type

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To solve issues [1-2] the Hot Plug Capable bit in PCIe Slots will be
turned on, while the switch to ACPI Hot-plug will be done in the
DSDT table.

Introducing 'x-keep-native-hpc' property disables the HPC bit only
in 6.1 and as a result keeps the forced 'reserve-io' on
pcie-root-ports in 6.1 too.

[1] https://gitlab.com/qemu-project/qemu/-/issues/641
[2] https://bugzilla.redhat.com/show_bug.cgi?id=2006409

Signed-off-by: Julia Suvorova <jusual@redhat.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20211112110857.3116853-3-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Julia Suvorova 2021-11-12 06:08:54 -05:00 • committed by Michael S. Tsirkin
parent 2aa1842d6d
commit c318bef762
4 changed files with 27 additions and 1 deletions
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1
include/hw/acpi/ich9.h
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@ -56,6 +56,7 @@ typedef struct ICH9LPCPMRegs {
AcpiCpuHotplug gpe_cpu;
CPUHotplugState cpuhp_state;
bool keep_pci_slot_hpc;
bool use_acpi_hotplug_bridge;
AcpiPciHpState acpi_pci_hotplug;
MemHotplugState acpi_memory_hotplug;