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[RFC,RESEND,v2,6/6] hw/i386/acpi-build: Add iommu filter in IVRS table

Message ID 1616656965-23328-7-git-send-email-wangxingang5@huawei.com (mailing list archive)
State New, archived
Headers show
Series Introduce IOMMU Option For PCI Root Bus | expand

Commit Message

Xingang Wang March 25, 2021, 7:22 a.m. UTC
From: Xingang Wang <wangxingang5@huawei.com>

When building amd IVRS table, only devices attached to root bus with
IOMMU flag should be scanned.

Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
---
 hw/i386/acpi-build.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 6936889cad..e0f38305da 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2229,7 +2229,7 @@  ivrs_host_bridges(Object *obj, void *opaque)
     if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) {
         PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus;
 
-        if (bus) {
+        if (bus && pci_root_bus_has_iommu(bus)) {
             pci_for_each_device(bus, pci_bus_num(bus), insert_ivhd, ivhd_blob);
         }
     }