motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2026-03-04 09:04:39 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

hw/pci/pci_host: Allow PCI host to bypass iommu

Browse source 
Add a new bypass_iommu property for PCI host and use it to check
whether devices attached to the PCI root bus will bypass iommu.
In pci_device_iommu_address_space(), check the property and
avoid getting iommu address space for devices bypass iommu.

Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <1625748919-52456-2-git-send-email-wangxingang5@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xingang Wang 2021-07-08 12:55:11 +00:00 • committed by Michael S. Tsirkin
parent 7395b3e3e7
commit 2d64b7bbb2
4 changed files with 20 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/hw/pci/pci.h
View file

@ -480,6 +480,7 @@ void pci_for_each_bus(PCIBus *bus,
PCIBus *pci_device_root_bus(const PCIDevice *d);
const char *pci_root_bus_path(PCIDevice *dev);
bool pci_bus_bypass_iommu(PCIBus *bus);
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn);
int pci_qdev_find_device(const char *id, PCIDevice **pdev);
void pci_bus_get_w64_range(PCIBus *bus, Range *range);

1
include/hw/pci/pci_host.h
View file

@ -43,6 +43,7 @@ struct PCIHostState {
uint32_t config_reg;
bool mig_enabled;
PCIBus *bus;
bool bypass_iommu;
QLIST_ENTRY(PCIHostState) next;
};