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GET /api/patches/2196286/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 2196286,
    "url": "http://patchwork.ozlabs.org/api/patches/2196286/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260213103942.142823-5-skolothumtho@nvidia.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": "<20260213103942.142823-5-skolothumtho@nvidia.com>",
    "list_archive_url": null,
    "date": "2026-02-13T10:39:41",
    "name": "[v6,4/5] hw/arm/smmuv3: Introduce a helper function for event propagation",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "a484fd8e63584d760f38b66ff97cfbafa7d8e526",
    "submitter": {
        "id": 91580,
        "url": "http://patchwork.ozlabs.org/api/people/91580/?format=api",
        "name": "Shameer Kolothum Thodi",
        "email": "skolothumtho@nvidia.com"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260213103942.142823-5-skolothumtho@nvidia.com/mbox/",
    "series": [
        {
            "id": 492079,
            "url": "http://patchwork.ozlabs.org/api/series/492079/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492079",
            "date": "2026-02-13T10:39:41",
            "name": "vEVENTQ support for accelerated SMMUv3 devices",
            "version": 6,
            "mbox": "http://patchwork.ozlabs.org/series/492079/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2196286/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2196286/checks/",
    "tags": {},
    "related": [],
    "headers": {
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        ],
        "From": "Shameer Kolothum <skolothumtho@nvidia.com>",
        "To": "<qemu-arm@nongnu.org>, <qemu-devel@nongnu.org>",
        "CC": "<eric.auger@redhat.com>, <peter.maydell@linaro.org>,\n <nicolinc@nvidia.com>, <nathanc@nvidia.com>, <mochs@nvidia.com>,\n <jan@nvidia.com>, <jgg@nvidia.com>, <jonathan.cameron@huawei.com>,\n <zhangfei.gao@linaro.org>, <zhenzhong.duan@intel.com>, <kjaju@nvidia.com>,\n <skolothumtho@nvidia.com>",
        "Subject": "[PATCH v6 4/5] hw/arm/smmuv3: Introduce a helper function for event\n propagation",
        "Date": "Fri, 13 Feb 2026 10:39:41 +0000",
        "Message-ID": "<20260213103942.142823-5-skolothumtho@nvidia.com>",
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    },
    "content": "Factor out the code that propagates event records to the guest into a\nhelper function. The accelerated SMMUv3 path can use this to propagate\nhost events in a subsequent patch.\n\nSince this helper may be called from outside the SMMUv3 core, take the\nmutex before accessing the Event Queue.\n\nNo functional change intended.\n\nReviewed-by: Nicolin Chen <nicolinc@nvidia.com>\nReviewed-by: Eric Auger <eric.auger@redhat.com>\nTested-by: Nicolin Chen <nicolinc@nvidia.com>\nSigned-off-by: Shameer Kolothum <skolothumtho@nvidia.com>\n---\n hw/arm/smmuv3-internal.h |  4 ++++\n hw/arm/smmuv3.c          | 21 +++++++++++++++------\n hw/arm/trace-events      |  2 +-\n 3 files changed, 20 insertions(+), 7 deletions(-)",
    "diff": "diff --git a/hw/arm/smmuv3-internal.h b/hw/arm/smmuv3-internal.h\nindex a6464425ec..b666109ad9 100644\n--- a/hw/arm/smmuv3-internal.h\n+++ b/hw/arm/smmuv3-internal.h\n@@ -352,7 +352,11 @@ typedef struct SMMUEventInfo {\n             (x)->word[6] = (uint32_t)(addr & 0xffffffff); \\\n     } while (0)\n \n+#define EVT_GET_TYPE(x)  extract32((x)->word[0], 0, 8)\n+#define EVT_GET_SID(x)   ((x)->word[1])\n+\n void smmuv3_record_event(SMMUv3State *s, SMMUEventInfo *event);\n+void smmuv3_propagate_event(SMMUv3State *s, Evt *evt);\n int smmu_find_ste(SMMUv3State *s, uint32_t sid, STE *ste, SMMUEventInfo *event);\n \n static inline int oas2bits(int oas_field)\ndiff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c\nindex f804d3af25..bcb9176c51 100644\n--- a/hw/arm/smmuv3.c\n+++ b/hw/arm/smmuv3.c\n@@ -168,10 +168,23 @@ static MemTxResult smmuv3_write_eventq(SMMUv3State *s, Evt *evt)\n     return MEMTX_OK;\n }\n \n+void smmuv3_propagate_event(SMMUv3State *s, Evt *evt)\n+{\n+    MemTxResult r;\n+\n+    trace_smmuv3_propagate_event(smmu_event_string(EVT_GET_TYPE(evt)),\n+                                 EVT_GET_SID(evt));\n+    qemu_mutex_lock(&s->mutex);\n+    r = smmuv3_write_eventq(s, evt);\n+    if (r != MEMTX_OK) {\n+        smmuv3_trigger_irq(s, SMMU_IRQ_GERROR, R_GERROR_EVENTQ_ABT_ERR_MASK);\n+    }\n+    qemu_mutex_unlock(&s->mutex);\n+}\n+\n void smmuv3_record_event(SMMUv3State *s, SMMUEventInfo *info)\n {\n     Evt evt = {};\n-    MemTxResult r;\n \n     if (!smmuv3_eventq_enabled(s)) {\n         return;\n@@ -251,11 +264,7 @@ void smmuv3_record_event(SMMUv3State *s, SMMUEventInfo *info)\n         g_assert_not_reached();\n     }\n \n-    trace_smmuv3_record_event(smmu_event_string(info->type), info->sid);\n-    r = smmuv3_write_eventq(s, &evt);\n-    if (r != MEMTX_OK) {\n-        smmuv3_trigger_irq(s, SMMU_IRQ_GERROR, R_GERROR_EVENTQ_ABT_ERR_MASK);\n-    }\n+    smmuv3_propagate_event(s, &evt);\n     info->recorded = true;\n }\n \ndiff --git a/hw/arm/trace-events b/hw/arm/trace-events\nindex 8135c0c734..3457536fb0 100644\n--- a/hw/arm/trace-events\n+++ b/hw/arm/trace-events\n@@ -40,7 +40,7 @@ smmuv3_cmdq_opcode(const char *opcode) \"<--- %s\"\n smmuv3_cmdq_consume_out(uint32_t prod, uint32_t cons, uint8_t prod_wrap, uint8_t cons_wrap) \"prod:%d, cons:%d, prod_wrap:%d, cons_wrap:%d \"\n smmuv3_cmdq_consume_error(const char *cmd_name, uint8_t cmd_error) \"Error on %s command execution: %d\"\n smmuv3_write_mmio(uint64_t addr, uint64_t val, unsigned size, uint32_t r) \"addr: 0x%\"PRIx64\" val:0x%\"PRIx64\" size: 0x%x(%d)\"\n-smmuv3_record_event(const char *type, uint32_t sid) \"%s sid=0x%x\"\n+smmuv3_propagate_event(const char *type, uint32_t sid) \"%s sid=0x%x\"\n smmuv3_find_ste(uint16_t sid, uint32_t features, uint16_t sid_split) \"sid=0x%x features:0x%x, sid_split:0x%x\"\n smmuv3_find_ste_2lvl(uint64_t strtab_base, uint64_t l1ptr, int l1_ste_offset, uint64_t l2ptr, int l2_ste_offset, int max_l2_ste) \"strtab_base:0x%\"PRIx64\" l1ptr:0x%\"PRIx64\" l1_off:0x%x, l2ptr:0x%\"PRIx64\" l2_off:0x%x max_l2_ste:%d\"\n smmuv3_get_ste(uint64_t addr) \"STE addr: 0x%\"PRIx64\n",
    "prefixes": [
        "v6",
        "4/5"
    ]
}