pci: acpi hotplug: rename x-native-hotplug to x-do-not-expose-native-hotplug-cap

When ACPI PCI hotplug for Q35 was introduced (6.1), it was implemented
by hiding HPC capability on PCIE slot. That however led to a number of
regressions and to fix it, it was decided to keep HPC cap exposed
in ACPI PCI hotplug case and force guest in ACPI PCI hotplug mode
by other means [1].

That reduced meaning of x-native-hotplug to a compat knob [2] for
broken 6.1 machine type.
Rename property to match its current purpose.

1) 211afe5c69 (hw/i386/acpi-build: Deny control on PCIe Native Hot-plug in _OSC)
2) c318bef762 (hw/acpi/ich9: Add compat prop to keep HPC bit set for 6.1 machine type)

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20230112140312.3096331-10-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/hw/pci/pcie_port.h b/include/hw/pci/pcie_port.h
index fd484afb30..6c40e3733f 100644
--- a/include/hw/pci/pcie_port.h
+++ b/include/hw/pci/pcie_port.h
@@ -63,7 +63,8 @@ struct PCIESlot {
     /* Indicates whether any type of hot-plug is allowed on the slot */
     bool        hotplug;
 
-    bool        native_hotplug;
+    /* broken ACPI hotplug compat knob to preserve 6.1 ABI intact */
+    bool        hide_native_hotplug_cap;
 
     QLIST_ENTRY(PCIESlot) next;
 };