From 077dd74239a99f6c1e77c5c1aa24cfc7f58cd20c Mon Sep 17 00:00:00 2001 From: Marcel Apfelbaum Date: Tue, 28 Feb 2017 16:13:29 +0200 Subject: [PATCH] hw/pxb-pcie: fix PCI Express hotplug support Add the missing osc method for pxb-pcie devices as APCI spec recommends, see 6.2.9.1 OSC Implementation Example for PCI Host Bridge Devices, ACPI 3.0a: It is recommended that a machine with multiple host bridge devices should report the same capabilities for all host bridges, and also negotiate control of the features described in the Control Field in the same way for all host bridges. Reviewed-by: Igor Mammedov Signed-off-by: Marcel Apfelbaum Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- dtc | 2 +- hw/i386/acpi-build.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/dtc b/dtc index ec02b34c05..65cc4d2748 160000 --- a/dtc +++ b/dtc @@ -1 +1 @@ -Subproject commit ec02b34c05be04f249ffaaca4b666f5246877dea +Subproject commit 65cc4d2748a2c2e6f27f1cf39e07a5dbabd80ebf diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index efbbfcb594..8018f0533b 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1962,6 +1962,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); + if (pci_bus_is_express(bus)) { + aml_append(dev, build_q35_osc_method()); + } if (numa_node != NUMA_NODE_UNASSIGNED) { aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node)));