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authorHannes Reinecke <hare@suse.de>2021-09-09 11:43:08 +0200
committerKlaus Jensen <k.jensen@samsung.com>2021-11-19 07:31:34 +0100
commit9fc6e86e8b69e2e672cbb9c25cddc3b9deb96afb (patch)
tree5236b40752492711e2887427d20d9f04cafa95b5 /hw/nvme/subsys.c
parent44a3aa0608f01274418487b655d42467c1d8334e (diff)
downloadfocaccia-qemu-9fc6e86e8b69e2e672cbb9c25cddc3b9deb96afb.tar.gz
focaccia-qemu-9fc6e86e8b69e2e672cbb9c25cddc3b9deb96afb.zip
hw/nvme: reattach subsystem namespaces on hotplug
With commit 5ffbaeed16 ("hw/nvme: fix controller hot unplugging")
namespaces get moved from the controller to the subsystem if one
is specified.
That keeps the namespaces alive after a controller hot-unplug, but
after a controller hotplug we have to reconnect the namespaces
from the subsystem to the controller.

Fixes: 5ffbaeed16 ("hw/nvme: fix controller hot unplugging")
Cc: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
[k.jensen: only attach to shared and non-detached namespaces]
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Diffstat (limited to 'hw/nvme/subsys.c')
-rw-r--r--hw/nvme/subsys.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/hw/nvme/subsys.c b/hw/nvme/subsys.c
index 495dcff5eb..fb58d63950 100644
--- a/hw/nvme/subsys.c
+++ b/hw/nvme/subsys.c
@@ -14,7 +14,7 @@
 int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp)
 {
     NvmeSubsystem *subsys = n->subsys;
-    int cntlid;
+    int cntlid, nsid;
 
     for (cntlid = 0; cntlid < ARRAY_SIZE(subsys->ctrls); cntlid++) {
         if (!subsys->ctrls[cntlid]) {
@@ -29,12 +29,20 @@ int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp)
 
     subsys->ctrls[cntlid] = n;
 
+    for (nsid = 1; nsid < ARRAY_SIZE(subsys->namespaces); nsid++) {
+        NvmeNamespace *ns = subsys->namespaces[nsid];
+        if (ns && ns->params.shared && !ns->params.detached) {
+            nvme_attach_ns(n, ns);
+        }
+    }
+
     return cntlid;
 }
 
 void nvme_subsys_unregister_ctrl(NvmeSubsystem *subsys, NvmeCtrl *n)
 {
     subsys->ctrls[n->cntlid] = NULL;
+    n->cntlid = -1;
 }
 
 static void nvme_subsys_setup(NvmeSubsystem *subsys)