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GET /api/patches/818962/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 818962,
    "url": "http://patchwork.ozlabs.org/api/patches/818962/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/1506494000-31982-5-git-send-email-Bharat.Bhushan@nxp.com/",
    "project": {
        "id": 14,
        "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api",
        "name": "QEMU Development",
        "link_name": "qemu-devel",
        "list_id": "qemu-devel.nongnu.org",
        "list_email": "qemu-devel@nongnu.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": "",
        "list_archive_url": "",
        "list_archive_url_format": "",
        "commit_url_format": ""
    },
    "msgid": "<1506494000-31982-5-git-send-email-Bharat.Bhushan@nxp.com>",
    "list_archive_url": null,
    "date": "2017-09-27T06:33:19",
    "name": "[v4,4/5] virtio-iommu: add iommu replay",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "37c1181566a2ba574234be358e9e11efea79101d",
    "submitter": {
        "id": 70741,
        "url": "http://patchwork.ozlabs.org/api/people/70741/?format=api",
        "name": "Bharat Bhushan",
        "email": "bharat.bhushan@nxp.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/1506494000-31982-5-git-send-email-Bharat.Bhushan@nxp.com/mbox/",
    "series": [
        {
            "id": 5292,
            "url": "http://patchwork.ozlabs.org/api/series/5292/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=5292",
            "date": "2017-09-27T06:33:15",
            "name": "virtio-iommu: VFIO integration",
            "version": 4,
            "mbox": "http://patchwork.ozlabs.org/series/5292/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/818962/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/818962/checks/",
    "tags": {},
    "related": [],
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        "From": "Bharat Bhushan <Bharat.Bhushan@nxp.com>",
        "To": "<eric.auger@redhat.com>, <eric.auger.pro@gmail.com>,\n\t<peter.maydell@linaro.org>, <alex.williamson@redhat.com>,\n\t<mst@redhat.com>, <qemu-arm@nongnu.org>, <qemu-devel@nongnu.org>",
        "Date": "Wed, 27 Sep 2017 12:03:19 +0530",
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        "X-Received-From": "104.47.34.56",
        "Subject": "[Qemu-devel] [PATCH v4 4/5] virtio-iommu: add iommu replay",
        "X-BeenThere": "qemu-devel@nongnu.org",
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        "Cc": "wei@redhat.com, kevin.tian@intel.com,\n\tBharat Bhushan <Bharat.Bhushan@nxp.com>, marc.zyngier@arm.com,\n\ttn@semihalf.com, will.deacon@arm.com, drjones@redhat.com,\n\trobin.murphy@arm.com, christoffer.dall@linaro.org,\n\tbharatb.yadav@gmail.com",
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    },
    "content": "Default replay does not work with virtio-iommu,\nso this patch provide virtio-iommu replay functionality.\n\nSigned-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>\n---\nv3->v4:\n - Replay functionality moved in separate patch\n - No other changes\n\n hw/virtio/trace-events   |  1 +\n hw/virtio/virtio-iommu.c | 38 ++++++++++++++++++++++++++++++++++++++\n 2 files changed, 39 insertions(+)",
    "diff": "diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events\nindex 251b595..840d54f 100644\n--- a/hw/virtio/trace-events\n+++ b/hw/virtio/trace-events\n@@ -51,3 +51,4 @@ virtio_iommu_fill_none_property(uint32_t devid) \"devid=%d\"\n virtio_iommu_set_page_size_mask(const char *iommu_mr, uint64_t mask) \"mr=%s page_size_mask=0x%\"PRIx64\n virtio_iommu_notify_map(const char *name, hwaddr iova, hwaddr paddr, hwaddr map_size) \"mr=%s iova=0x%\"PRIx64\" pa=0x%\" PRIx64\" size=0x%\"PRIx64\"\"\n virtio_iommu_notify_unmap(const char *name, hwaddr iova, hwaddr map_size) \"mr=%s iova=0x%\"PRIx64\" size=0x%\"PRIx64\"\"\n+virtio_iommu_remap(hwaddr iova, hwaddr pa, hwaddr size) \"iova=0x%\"PRIx64\" pa=0x%\" PRIx64\" size=0x%\"PRIx64\"\"\ndiff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c\nindex ff91bce..d4d34cf 100644\n--- a/hw/virtio/virtio-iommu.c\n+++ b/hw/virtio/virtio-iommu.c\n@@ -906,6 +906,43 @@ static gint int_cmp(gconstpointer a, gconstpointer b, gpointer user_data)\n     return (ua > ub) - (ua < ub);\n }\n \n+static gboolean virtio_iommu_remap(gpointer key, gpointer value, gpointer data)\n+{\n+    viommu_mapping *mapping = (viommu_mapping *) value;\n+    IOMMUMemoryRegion *mr = (IOMMUMemoryRegion *) data;\n+\n+    trace_virtio_iommu_remap(mapping->virt_addr, mapping->phys_addr,\n+                             mapping->size);\n+    /* unmap previous entry and map again */\n+    virtio_iommu_notify_unmap(mr, mapping->virt_addr, mapping->size);\n+\n+    virtio_iommu_notify_map(mr, mapping->virt_addr, mapping->phys_addr,\n+                            mapping->size);\n+    return false;\n+}\n+\n+static void virtio_iommu_replay(IOMMUMemoryRegion *mr, IOMMUNotifier *n)\n+{\n+    IOMMUDevice *sdev = container_of(mr, IOMMUDevice, iommu_mr);\n+    VirtIOIOMMU *s = sdev->viommu;\n+    uint32_t sid;\n+    viommu_dev *dev;\n+\n+    sid = virtio_iommu_get_sid(sdev);\n+\n+    qemu_mutex_lock(&s->mutex);\n+\n+    dev = g_tree_lookup(s->devices, GUINT_TO_POINTER(sid));\n+    if (!dev || !dev->as) {\n+        goto unlock;\n+    }\n+\n+    g_tree_foreach(dev->as->mappings, virtio_iommu_remap, mr);\n+\n+unlock:\n+    qemu_mutex_unlock(&s->mutex);\n+}\n+\n static void virtio_iommu_device_realize(DeviceState *dev, Error **errp)\n {\n     VirtIODevice *vdev = VIRTIO_DEVICE(dev);\n@@ -1003,6 +1040,7 @@ static void virtio_iommu_memory_region_class_init(ObjectClass *klass,\n \n     imrc->translate = virtio_iommu_translate;\n     imrc->set_page_size_mask = virtio_iommu_set_page_size_mask;\n+    imrc->replay = virtio_iommu_replay;\n }\n \n static const TypeInfo virtio_iommu_info = {\n",
    "prefixes": [
        "v4",
        "4/5"
    ]
}