Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pci, pc, virtio: fixes, features

VTD fixes
IR and split irqchip are now the default for Q35
ACPI refactoring
hotplug refactoring
new names for virtio devices
multiple pcie link width/speeds
PCI fixes

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 20 Dec 2018 18:26:03 GMT
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (44 commits)
  x86-iommu: turn on IR by default if proper
  x86-iommu: switch intr_supported to OnOffAuto type
  q35: set split kernel irqchip as default
  pci: Adjust PCI config limit based on bus topology
  spapr_pci: perform unplug via the hotplug handler
  pci/shpc: perform unplug via the hotplug handler
  pci: Reuse pci-bridge hotplug handler handlers for pcie-pci-bridge
  pci/pcie: perform unplug via the hotplug handler
  pci/pcihp: perform unplug via the hotplug handler
  pci/pcihp: overwrite hotplug handler recursively from the start
  pci/pcihp: perform check for bus capability in pre_plug handler
  s390x/pci: rename hotplug handler callbacks
  pci/shpc: rename hotplug handler callbacks
  pci/pcie: rename hotplug handler callbacks
  hw/i386: Remove deprecated machines pc-0.10 and pc-0.11
  hw: acpi: Remove AcpiRsdpDescriptor and fix tests
  hw: acpi: Export and share the ARM RSDP build
  hw: arm: Support both legacy and current RSDP build
  hw: arm: Convert the RSDP build to the buid_append_foo() API
  hw: arm: Carry RSDP specific data through AcpiRsdpData
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 15 insertions, 3 deletions

diff --git a/hw/i386/x86-iommu.c b/hw/i386/x86-iommu.c
index abc3c03158..d1534c1ae0 100644
--- a/hw/i386/x86-iommu.c
+++ b/hw/i386/x86-iommu.c
@@ -112,6 +112,7 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp)
     PCMachineState *pcms =
         PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE));
     QLIST_INIT(&x86_iommu->iec_notifiers);
+    bool irq_all_kernel = kvm_irqchip_in_kernel() && !kvm_irqchip_is_split();
 
     if (!pcms || !pcms->bus) {
         error_setg(errp, "Machine-type '%s' not supported by IOMMU",
@@ -119,9 +120,14 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp)
         return;
     }
 
+    /* If the user didn't specify IR, choose a default value for it */
+    if (x86_iommu->intr_supported == ON_OFF_AUTO_AUTO) {
+        x86_iommu->intr_supported = irq_all_kernel ?
+            ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
+    }
+
     /* Both Intel and AMD IOMMU IR only support "kernel-irqchip={off|split}" */
-    if (x86_iommu->intr_supported && kvm_irqchip_in_kernel() &&
-        !kvm_irqchip_is_split()) {
+    if (x86_iommu_ir_supported(x86_iommu) && irq_all_kernel) {
         error_setg(errp, "Interrupt Remapping cannot work with "
                          "kernel-irqchip=on, please use 'split|off'.");
         return;
@@ -135,7 +141,8 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp)
 }
 
 static Property x86_iommu_properties[] = {
-    DEFINE_PROP_BOOL("intremap", X86IOMMUState, intr_supported, false),
+    DEFINE_PROP_ON_OFF_AUTO("intremap", X86IOMMUState,
+                            intr_supported, ON_OFF_AUTO_AUTO),
     DEFINE_PROP_BOOL("device-iotlb", X86IOMMUState, dt_supported, false),
     DEFINE_PROP_BOOL("pt", X86IOMMUState, pt_supported, true),
     DEFINE_PROP_END_OF_LIST(),
@@ -148,6 +155,11 @@ static void x86_iommu_class_init(ObjectClass *klass, void *data)
     dc->props = x86_iommu_properties;
 }
 
+bool x86_iommu_ir_supported(X86IOMMUState *s)
+{
+    return s->intr_supported == ON_OFF_AUTO_ON;
+}
+
 static const TypeInfo x86_iommu_info = {
     .name          = TYPE_X86_IOMMU_DEVICE,
     .parent        = TYPE_SYS_BUS_DEVICE,