Merge tag 'pull-10.1-maintainer-june-2025-020725-1' of https://gitlab.com/stsquad/qemu into staging

Maintainer updates for June (gitlab, semihosting, plugins, virtio-gpu)

 - mark s390x runner system tests as allow_fail
 - build semihosting once
 - add register write support to plugins
 - add virtual memory write support to plugins
 - add harder memory read/write support to plugins
 - add patcher plugin and tests
 - re-stock virtio-gpu MAINTAINERS
 - fix context init for Venus fences

* tag 'pull-10.1-maintainer-june-2025-020725-1' of https://gitlab.com/stsquad/qemu:
  virtio-gpu: support context init multiple timeline
  MAINTAINERS: add Akihiko and Dmitry as reviewers
  MAINTAINERS: add myself to virtio-gpu for Odd Fixes
  plugins: Update plugin version and add notes
  plugins: Add patcher plugin and test
  tests/tcg: Remove copy-pasted notes and from i386 and add x86_64 system tests to tests
  plugins: Add memory hardware address read/write API
  plugins: Add memory virtual address write API
  plugins: Add enforcement of QEMU_PLUGIN_CB flags in register R/W callbacks
  plugins: Add register write API
  gdbstub: Expose gdb_write_register function to consumers of gdbstub
  semihosting/uaccess: Compile once
  semihosting/uaccess: Remove uses of target_ulong type
  tests/functional: Add PCI hotplug test for aarch64
  gitlab: mark s390x-system to allow failures

Conflicts:
  tests/functional/meson.build

  Context conflict with commit 7bc86ccbb59f ("tests/functional: test
  device passthrough on aarch64"), keep both changes to
  tests_aarch64_system_thorough[].

1 files changed, 44 insertions, 0 deletions

diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
index 145a0b3..94ddc01 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -970,6 +970,15 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
     }
 
     trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
+#if VIRGL_VERSION_MAJOR >= 1
+    if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_INFO_RING_IDX) {
+        virgl_renderer_context_create_fence(cmd->cmd_hdr.ctx_id,
+                                            VIRGL_RENDERER_FENCE_FLAG_MERGEABLE,
+                                            cmd->cmd_hdr.ring_idx,
+                                            cmd->cmd_hdr.fence_id);
+        return;
+    }
+#endif
     virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 }
 
@@ -983,6 +992,11 @@ static void virgl_write_fence(void *opaque, uint32_t fence)
          * the guest can end up emitting fences out of order
          * so we should check all fenced cmds not just the first one.
          */
+#if VIRGL_VERSION_MAJOR >= 1
+        if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_INFO_RING_IDX) {
+            continue;
+        }
+#endif
         if (cmd->cmd_hdr.fence_id > fence) {
             continue;
         }
@@ -997,6 +1011,29 @@ static void virgl_write_fence(void *opaque, uint32_t fence)
     }
 }
 
+#if VIRGL_VERSION_MAJOR >= 1
+static void virgl_write_context_fence(void *opaque, uint32_t ctx_id,
+                                      uint32_t ring_idx, uint64_t fence_id) {
+    VirtIOGPU *g = opaque;
+    struct virtio_gpu_ctrl_command *cmd, *tmp;
+
+    QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
+        if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_INFO_RING_IDX &&
+            cmd->cmd_hdr.ctx_id == ctx_id && cmd->cmd_hdr.ring_idx == ring_idx &&
+            cmd->cmd_hdr.fence_id <= fence_id) {
+            trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
+            virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
+            QTAILQ_REMOVE(&g->fenceq, cmd, next);
+            g_free(cmd);
+            g->inflight--;
+            if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
+                trace_virtio_gpu_dec_inflight_fences(g->inflight);
+            }
+        }
+    }
+}
+#endif
+
 static virgl_renderer_gl_context
 virgl_create_context(void *opaque, int scanout_idx,
                      struct virgl_renderer_gl_ctx_param *params)
@@ -1031,11 +1068,18 @@ static int virgl_make_context_current(void *opaque, int scanout_idx,
 }
 
 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
+#if VIRGL_VERSION_MAJOR >= 1
+    .version             = 3,
+#else
     .version             = 1,
+#endif
     .write_fence         = virgl_write_fence,
     .create_gl_context   = virgl_create_context,
     .destroy_gl_context  = virgl_destroy_context,
     .make_current        = virgl_make_context_current,
+#if VIRGL_VERSION_MAJOR >= 1
+    .write_context_fence = virgl_write_context_fence,
+#endif
 };
 
 static void virtio_gpu_print_stats(void *opaque)