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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now we have a pair of ->set_vmid() and ->get_vmid() function pointers. This patch implements them, to exchange VMID value between vfio container and vfio_iommu_type1. Signed-off-by: Nicolin Chen --- drivers/vfio/vfio_iommu_type1.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 0e9217687f5c..bb5d949bc1af 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -74,6 +74,7 @@ struct vfio_iommu { uint64_t pgsize_bitmap; uint64_t num_non_pinned_groups; wait_queue_head_t vaddr_wait; + uint32_t vmid; bool v2; bool nesting; bool dirty_page_tracking; @@ -2674,6 +2675,7 @@ static void *vfio_iommu_type1_open(unsigned long arg) iommu->dma_list = RB_ROOT; iommu->dma_avail = dma_entry_limit; iommu->container_open = true; + iommu->vmid = VFIO_IOMMU_VMID_INVALID; mutex_init(&iommu->lock); BLOCKING_INIT_NOTIFIER_HEAD(&iommu->notifier); init_waitqueue_head(&iommu->vaddr_wait); @@ -3255,6 +3257,27 @@ static void vfio_iommu_type1_notify(void *iommu_data, wake_up_all(&iommu->vaddr_wait); } +static int vfio_iommu_type1_get_vmid(void *iommu_data, u32 *vmid) +{ + struct vfio_iommu *iommu = iommu_data; + + *vmid = iommu->vmid; + + return 0; +} + +static int vfio_iommu_type1_set_vmid(void *iommu_data, u32 vmid) +{ + struct vfio_iommu *iommu = iommu_data; + + if (vmid == VFIO_IOMMU_VMID_INVALID) + return -EINVAL; + + iommu->vmid = vmid; + + return 0; +} + static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = { .name = "vfio-iommu-type1", .owner = THIS_MODULE, @@ -3270,6 +3293,8 @@ static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = { .dma_rw = vfio_iommu_type1_dma_rw, .group_iommu_domain = vfio_iommu_type1_group_iommu_domain, .notify = vfio_iommu_type1_notify, + .set_vmid = vfio_iommu_type1_set_vmid, + .get_vmid = vfio_iommu_type1_get_vmid, }; static int __init vfio_iommu_type1_init(void) -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel