[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 14/35] virtio-pci: implement iommu_enabled()
From: |
Michael S. Tsirkin |
Subject: |
[PULL 14/35] virtio-pci: implement iommu_enabled() |
Date: |
Sat, 4 Sep 2021 17:36:36 -0400 |
From: Jason Wang <jasowang@redhat.com>
This patch implements the PCI transport version of iommu_enabled. This
is done by comparing the address space returned by
pci_device_iommu_address_space() against address_space_memory.
Note that an ideal approach is to use pci_device_iommu_address_space()
in get_dma_as(), but it might not work well since the IOMMU could be
initialized after the virtio-pci device is initialized.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20210804034803.1644-3-jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/virtio/virtio-pci.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 433060ac02..6e16e2705c 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1121,6 +1121,19 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceState
*d)
return pci_get_address_space(dev);
}
+static bool virtio_pci_iommu_enabled(DeviceState *d)
+{
+ VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
+ PCIDevice *dev = &proxy->pci_dev;
+ AddressSpace *dma_as = pci_device_iommu_address_space(dev);
+
+ if (dma_as == &address_space_memory) {
+ return false;
+ }
+
+ return true;
+}
+
static bool virtio_pci_queue_enabled(DeviceState *d, int n)
{
VirtIOPCIProxy *proxy = VIRTIO_PCI(d);
@@ -2202,6 +2215,7 @@ static void virtio_pci_bus_class_init(ObjectClass *klass,
void *data)
k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled;
k->ioeventfd_assign = virtio_pci_ioeventfd_assign;
k->get_dma_as = virtio_pci_get_dma_as;
+ k->iommu_enabled = virtio_pci_iommu_enabled;
k->queue_enabled = virtio_pci_queue_enabled;
}
--
MST
- Re: [PULL 06/35] hw/acpi: refactor acpi hp modules so that targets can just use what they need, (continued)
[PULL 07/35] hw/virtio: move vhost_set_backend_type() to vhost.c, Michael S. Tsirkin, 2021/09/04
[PULL 09/35] acpi: Delete broken ACPI_GED_X86 macro, Michael S. Tsirkin, 2021/09/04
[PULL 10/35] Use PCI_HOST_BRIDGE macro, Michael S. Tsirkin, 2021/09/04
[PULL 11/35] virtio-balloon: don't start free page hinting if postcopy is possible, Michael S. Tsirkin, 2021/09/04
[PULL 12/35] virtio-balloon: free page hinting cleanups, Michael S. Tsirkin, 2021/09/04
[PULL 13/35] virtio-bus: introduce iommu_enabled(), Michael S. Tsirkin, 2021/09/04
[PULL 14/35] virtio-pci: implement iommu_enabled(),
Michael S. Tsirkin <=
[PULL 16/35] hw/i386/acpi-build: Get NUMA information from struct NumaState, Michael S. Tsirkin, 2021/09/04
[PULL 17/35] hw/pci: remove all references to find_i440fx function, Michael S. Tsirkin, 2021/09/04
[PULL 20/35] hw/virtio: Document virtio_queue_packed_empty_rcu is called within RCU, Michael S. Tsirkin, 2021/09/04
[PULL 21/35] hw/virtio: Remove NULL check in virtio_free_region_cache(), Michael S. Tsirkin, 2021/09/04
[PULL 19/35] MAINTAINERS: Added myself as a reviewer for acpi/smbios subsystem, Michael S. Tsirkin, 2021/09/04
[PULL 18/35] hw/acpi: use existing references to pci device struct within functions, Michael S. Tsirkin, 2021/09/04
[PULL 22/35] hw/virtio: Add flatview update in vhost_user_cleanup(), Michael S. Tsirkin, 2021/09/04
[PULL 23/35] tests/vhost-user-bridge.c: Sanity check socket path length, Michael S. Tsirkin, 2021/09/04
[PULL 24/35] tests/vhost-user-bridge.c: Fix typo in help message, Michael S. Tsirkin, 2021/09/04
[PULL 25/35] vhost-vdpa: remove unused variable "acked_features", Michael S. Tsirkin, 2021/09/04