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[Qemu-devel] [RFC v1 15/18] vfio/pci: adds support for PASID-based iotlb
From: |
Liu Yi L |
Subject: |
[Qemu-devel] [RFC v1 15/18] vfio/pci: adds support for PASID-based iotlb flush |
Date: |
Fri, 5 Jul 2019 19:01:48 +0800 |
This patch adds support for propagating guest PASID-based iotlb flush
to host via vfio container ioctl.
Cc: Kevin Tian <address@hidden>
Cc: Jacob Pan <address@hidden>
Cc: Peter Xu <address@hidden>
Cc: Eric Auger <address@hidden>
Cc: Yi Sun <address@hidden>
Cc: David Gibson <address@hidden>
Signed-off-by: Liu Yi L <address@hidden>
---
hw/vfio/pci.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 892b46c..d8b84a5 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2796,11 +2796,34 @@ static void vfio_pci_device_unbind_gpasid(PCIBus *bus,
int32_t devfn,
g_free(bind);
}
+static void vfio_pci_device_flush_pasid_iotlb(PCIBus *bus, int32_t devfn,
+ struct iommu_cache_invalidate_info *info)
+{
+ PCIDevice *pdev = bus->devices[devfn];
+ VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev);
+ VFIOContainer *container = vdev->vbasedev.group->container;
+ struct vfio_iommu_type1_cache_invalidate cache_inv;
+ unsigned long argsz;
+
+ argsz = sizeof(cache_inv);
+ cache_inv.argsz = argsz;
+ cache_inv.info = *info;
+ cache_inv.flags = 0x0;
+
+ rcu_read_lock();
+ if (ioctl(container->fd, VFIO_IOMMU_CACHE_INVALIDATE, &cache_inv) != 0) {
+ error_report("vfio_pci_device_flush_pasid_iotlb:"
+ " cache invalidation failed, contanier: %p", container);
+ }
+ rcu_read_unlock();
+}
+
static PCIPASIDOps vfio_pci_pasid_ops = {
.alloc_pasid = vfio_pci_device_request_pasid_alloc,
.free_pasid = vfio_pci_device_request_pasid_free,
.bind_gpasid = vfio_pci_device_bind_gpasid,
.unbind_gpasid = vfio_pci_device_unbind_gpasid,
+ .flush_pasid_iotlb = vfio_pci_device_flush_pasid_iotlb,
};
static void vfio_realize(PCIDevice *pdev, Error **errp)
--
2.7.4
- [Qemu-devel] [RFC v1 11/18] intel_iommu: create VTDAddressSpace per BDF+PASID, (continued)
- [Qemu-devel] [RFC v1 11/18] intel_iommu: create VTDAddressSpace per BDF+PASID, Liu Yi L, 2019/07/06
- [Qemu-devel] [RFC v1 10/18] intel_iommu: tag VTDAddressSpace instance with PASID, Liu Yi L, 2019/07/06
- [Qemu-devel] [RFC v1 12/18] intel_iommu: bind/unbind guest page table to host, Liu Yi L, 2019/07/06
- [Qemu-devel] [RFC v1 14/18] hw/pci: add flush_pasid_iotlb() in PCIPASIDOps, Liu Yi L, 2019/07/06
- [Qemu-devel] [RFC v1 16/18] intel_iommu: add PASID-based iotlb invalidation support, Liu Yi L, 2019/07/06
- [Qemu-devel] [RFC v1 13/18] intel_iommu: flush pasid cache after a DSI context cache flush, Liu Yi L, 2019/07/06
- [Qemu-devel] [RFC v1 15/18] vfio/pci: adds support for PASID-based iotlb flush,
Liu Yi L <=
- [Qemu-devel] [RFC v1 17/18] intel_iommu: propagate PASID-based iotlb flush to host, Liu Yi L, 2019/07/06
- [Qemu-devel] [RFC v1 18/18] intel_iommu: do not passdown pasid bind for PASID #0, Liu Yi L, 2019/07/06