From: Liu Yi L <yi.l.liu@intel.com>
To: qemu-devel@nongnu.org, mst@redhat.com, pbonzini@redhat.com,
alex.williamson@redhat.com, peterx@redhat.com
Cc: tianyu.lan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com,
Yi Sun <yi.y.sun@linux.intel.com>,
kvm@vger.kernel.org, jun.j.tian@intel.com, eric.auger@redhat.com,
yi.y.sun@intel.com, jacob.jun.pan@linux.intel.com,
david@gibson.dropbear.id.au
Subject: [RFC v2 14/22] vfio/pci: add iommu_context notifier for pasid bind/unbind
Date: Thu, 24 Oct 2019 08:34:35 -0400 [thread overview]
Message-ID: <1571920483-3382-15-git-send-email-yi.l.liu@intel.com> (raw)
In-Reply-To: <1571920483-3382-1-git-send-email-yi.l.liu@intel.com>
This patch adds notifier for pasid bind/unbind. VFIO registers this
notifier to listen to the dual-stage translation (a.k.a. nested
translation) configuration changes and propagate to host. Thus vIOMMU
is able to set its translation structures to host.
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Yi Sun <yi.y.sun@linux.intel.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
---
hw/vfio/pci.c | 39 +++++++++++++++++++++++++++++++++++++++
include/hw/iommu/iommu.h | 11 +++++++++++
2 files changed, 50 insertions(+)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 8721ff6..012b8ed 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -2767,6 +2767,41 @@ static void vfio_iommu_pasid_free_notify(IOMMUCTXNotifier *n,
pasid_req->free_result = ret;
}
+static void vfio_iommu_pasid_bind_notify(IOMMUCTXNotifier *n,
+ IOMMUCTXEventData *event_data)
+{
+#ifdef __linux__
+ VFIOIOMMUContext *giommu_ctx = container_of(n, VFIOIOMMUContext, n);
+ VFIOContainer *container = giommu_ctx->container;
+ IOMMUCTXPASIDBindData *pasid_bind =
+ (IOMMUCTXPASIDBindData *) event_data->data;
+ struct vfio_iommu_type1_bind *bind;
+ struct iommu_gpasid_bind_data *bind_data;
+ unsigned long argsz;
+
+ argsz = sizeof(*bind) + sizeof(*bind_data);
+ bind = g_malloc0(argsz);
+ bind->argsz = argsz;
+ bind->bind_type = VFIO_IOMMU_BIND_GUEST_PASID;
+ bind_data = (struct iommu_gpasid_bind_data *) &bind->data;
+ *bind_data = *pasid_bind->data;
+
+ if (pasid_bind->flag & IOMMU_CTX_BIND_PASID) {
+ if (ioctl(container->fd, VFIO_IOMMU_BIND, bind) != 0) {
+ error_report("%s: pasid (%llu:%llu) bind failed: %d", __func__,
+ bind_data->gpasid, bind_data->hpasid, -errno);
+ }
+ } else if (pasid_bind->flag & IOMMU_CTX_UNBIND_PASID) {
+ if (ioctl(container->fd, VFIO_IOMMU_UNBIND, bind) != 0) {
+ error_report("%s: pasid (%llu:%llu) unbind failed: %d", __func__,
+ bind_data->gpasid, bind_data->hpasid, -errno);
+ }
+ }
+
+ g_free(bind);
+#endif
+}
+
static void vfio_realize(PCIDevice *pdev, Error **errp)
{
VFIOPCIDevice *vdev = PCI_VFIO(pdev);
@@ -3079,6 +3114,10 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
iommu_context,
vfio_iommu_pasid_free_notify,
IOMMU_CTX_EVENT_PASID_FREE);
+ vfio_register_iommu_ctx_notifier(vdev,
+ iommu_context,
+ vfio_iommu_pasid_bind_notify,
+ IOMMU_CTX_EVENT_PASID_BIND);
}
return;
diff --git a/include/hw/iommu/iommu.h b/include/hw/iommu/iommu.h
index 4352afd..4f21aa1 100644
--- a/include/hw/iommu/iommu.h
+++ b/include/hw/iommu/iommu.h
@@ -33,6 +33,7 @@ typedef struct IOMMUContext IOMMUContext;
enum IOMMUCTXEvent {
IOMMU_CTX_EVENT_PASID_ALLOC,
IOMMU_CTX_EVENT_PASID_FREE,
+ IOMMU_CTX_EVENT_PASID_BIND,
IOMMU_CTX_EVENT_NUM,
};
typedef enum IOMMUCTXEvent IOMMUCTXEvent;
@@ -50,6 +51,16 @@ union IOMMUCTXPASIDReqDesc {
};
typedef union IOMMUCTXPASIDReqDesc IOMMUCTXPASIDReqDesc;
+struct IOMMUCTXPASIDBindData {
+#define IOMMU_CTX_BIND_PASID (1 << 0)
+#define IOMMU_CTX_UNBIND_PASID (1 << 1)
+ uint32_t flag;
+#ifdef __linux__
+ struct iommu_gpasid_bind_data *data;
+#endif
+};
+typedef struct IOMMUCTXPASIDBindData IOMMUCTXPASIDBindData;
+
struct IOMMUCTXEventData {
IOMMUCTXEvent event;
uint64_t length;
--
2.7.4
next prev parent reply other threads:[~2019-10-24 13:24 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 12:34 [RFC v2 00/22] intel_iommu: expose Shared Virtual Addressing to VM Liu Yi L
2019-10-24 12:34 ` [RFC v2 01/22] update-linux-headers: Import iommu.h Liu Yi L
2019-10-24 12:34 ` [RFC v2 02/22] header update VFIO/IOMMU vSVA APIs against 5.4.0-rc3+ Liu Yi L
2019-10-24 12:34 ` [RFC v2 03/22] intel_iommu: modify x-scalable-mode to be string option Liu Yi L
2019-11-01 14:57 ` Peter Xu
2019-11-05 9:14 ` Liu, Yi L
2019-11-05 12:50 ` Peter Xu
2019-11-06 9:50 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 04/22] hw/iommu: introduce IOMMUContext Liu Yi L
2019-10-27 17:39 ` David Gibson
2019-11-06 11:18 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 05/22] vfio/common: add iommu_ctx_notifier in container Liu Yi L
2019-11-01 14:58 ` Peter Xu
2019-11-06 11:08 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 06/22] hw/pci: modify pci_setup_iommu() to set PCIIOMMUOps Liu Yi L
2019-10-27 17:43 ` David Gibson
2019-11-06 8:18 ` Liu, Yi L
2019-11-01 18:09 ` Peter Xu
2019-11-06 8:15 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 07/22] hw/pci: introduce pci_device_iommu_context() Liu Yi L
2019-10-29 11:50 ` David Gibson
2019-11-06 8:20 ` Liu, Yi L
2019-11-01 18:09 ` Peter Xu
2019-11-06 8:14 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 08/22] intel_iommu: provide get_iommu_context() callback Liu Yi L
2019-11-01 14:55 ` Peter Xu
2019-11-06 11:07 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 09/22] vfio/pci: add iommu_context notifier for pasid alloc/free Liu Yi L
2019-10-29 12:15 ` David Gibson
2019-11-01 17:26 ` Peter Xu
2019-11-06 12:46 ` Liu, Yi L
2019-11-06 12:14 ` Liu, Yi L
2019-11-20 4:27 ` David Gibson
2019-11-26 7:07 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 10/22] intel_iommu: add virtual command capability support Liu Yi L
2019-11-01 18:05 ` Peter Xu
2019-11-06 12:40 ` Liu, Yi L
2019-11-06 14:00 ` Peter Xu
2019-11-12 6:27 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 11/22] intel_iommu: process pasid cache invalidation Liu Yi L
2019-11-02 16:05 ` Peter Xu
2019-11-06 5:55 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 12/22] intel_iommu: add present bit check for pasid table entries Liu Yi L
2019-11-02 16:20 ` Peter Xu
2019-11-06 8:14 ` Liu, Yi L
2019-10-24 12:34 ` [RFC v2 13/22] intel_iommu: add PASID cache management infrastructure Liu Yi L
2019-11-04 17:08 ` Peter Xu
2019-11-04 20:06 ` Peter Xu
2019-11-06 7:56 ` Liu, Yi L
2019-11-07 15:46 ` Peter Xu
2019-10-24 12:34 ` Liu Yi L [this message]
2019-11-04 16:02 ` [RFC v2 14/22] vfio/pci: add iommu_context notifier for pasid bind/unbind David Gibson
2019-11-06 12:22 ` Liu, Yi L
2019-11-06 14:25 ` Peter Xu
2019-10-24 12:34 ` [RFC v2 15/22] intel_iommu: bind/unbind guest page table to host Liu Yi L
2019-11-04 20:25 ` Peter Xu
2019-11-06 8:10 ` Liu, Yi L
2019-11-06 14:27 ` Peter Xu
2019-10-24 12:34 ` [RFC v2 16/22] intel_iommu: replay guest pasid bindings " Liu Yi L
2019-10-24 12:34 ` [RFC v2 17/22] intel_iommu: replay pasid binds after context cache invalidation Liu Yi L
2019-10-24 12:34 ` [RFC v2 18/22] intel_iommu: do not passdown pasid bind for PASID #0 Liu Yi L
2019-10-24 12:34 ` [RFC v2 19/22] vfio/pci: add iommu_context notifier for PASID-based iotlb flush Liu Yi L
2019-10-24 12:34 ` [RFC v2 20/22] intel_iommu: process PASID-based iotlb invalidation Liu Yi L
2019-10-24 12:34 ` [RFC v2 21/22] intel_iommu: propagate PASID-based iotlb invalidation to host Liu Yi L
2019-10-24 12:34 ` [RFC v2 22/22] intel_iommu: process PASID-based Device-TLB invalidation Liu Yi L
2019-10-25 6:21 ` [RFC v2 00/22] intel_iommu: expose Shared Virtual Addressing to VM no-reply
2019-10-25 6:30 ` no-reply
2019-10-25 9:49 ` Jason Wang
2019-10-25 10:12 ` Tian, Kevin
2019-10-31 4:33 ` Jason Wang
2019-10-31 5:39 ` Tian, Kevin
2019-10-31 14:07 ` Liu, Yi L
2019-11-01 7:29 ` Jason Wang
2019-11-01 7:46 ` Tian, Kevin
2019-11-01 8:04 ` Jason Wang
2019-11-01 8:09 ` Jason Wang
2019-11-02 7:35 ` Tian, Kevin
2019-11-04 17:22 ` Peter Xu
2019-11-05 9:09 ` Liu, Yi L
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