diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2017-03-14 11:54:17 +1100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-03-14 11:54:17 +1100 |
| commit | 82516263cead40ac240ae5fb2a6f5fc0fda9614c (patch) | |
| tree | f55ae1437125d4e0cf8c342983970f381589a1a5 /hw | |
| parent | 38a61d34875335717f22e3a0eb1e0d5df4f62def (diff) | |
pseries: Don't expose PCIe extended config space on older machine types
bb9986452 "spapr_pci: Advertise access to PCIe extended config space"
allowed guests to access the extended config space of PCI Express devices
via the PAPR interfaces, even though the paravirtualized bus mostly acts
like plain PCI.
However, that patch enabled access unconditionally, including for existing
machine types, which is an unwise change in behaviour. This patch limits
the change to pseries-2.9 (and later) machine types.
Suggested-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/ppc/spapr.c | 9 | ||||
| -rw-r--r-- | hw/ppc/spapr_pci.c | 4 |
2 files changed, 10 insertions, 3 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index c3bb991605..6ee566d658 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3163,8 +3163,13 @@ DEFINE_SPAPR_MACHINE(2_9, "2.9", true); /* * pseries-2.8 */ -#define SPAPR_COMPAT_2_8 \ - HW_COMPAT_2_8 +#define SPAPR_COMPAT_2_8 \ + HW_COMPAT_2_8 \ + { \ + .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, \ + .property = "pcie-extended-configuration-space", \ + .value = "off", \ + }, static void spapr_machine_2_8_instance_options(MachineState *machine) { diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index 919d3c2c59..98c52e411f 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -1321,7 +1321,7 @@ static int spapr_populate_pci_child_dt(PCIDevice *dev, void *fdt, int offset, _FDT(fdt_setprop(fdt, offset, "assigned-addresses", (uint8_t *)rp.assigned, rp.assigned_len)); - if (pci_is_express(dev)) { + if (sphb->pcie_ecs && pci_is_express(dev)) { _FDT(fdt_setprop_cell(fdt, offset, "ibm,pci-config-space-type", 0x1)); } @@ -1858,6 +1858,8 @@ static Property spapr_phb_properties[] = { DEFINE_PROP_UINT32("numa_node", sPAPRPHBState, numa_node, -1), DEFINE_PROP_BOOL("pre-2.8-migration", sPAPRPHBState, pre_2_8_migration, false), + DEFINE_PROP_BOOL("pcie-extended-configuration-space", sPAPRPHBState, + pcie_ecs, true), DEFINE_PROP_END_OF_LIST(), }; |