[Qemu-devel] [RFC PATCH v2 27/35] multi-process: remote: add create_done condition

[elena.ufimtseva@oracle.com]

From: Elena Ufimtseva <elena.ufimtseva@oracle.com>

Do not allow BAR,MMIO handlers and irq setup to run before
the configuration of the devices completes.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
---
 remote/remote-main.c | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/remote/remote-main.c b/remote/remote-main.c
index 5c26339ed7..c1362be93e 100644
--- a/remote/remote-main.c
+++ b/remote/remote-main.c
@@ -67,6 +67,7 @@
 
 static ProxyLinkState *proxy_link;
 PCIDevice *remote_pci_dev;
+bool create_done;
 
 static void process_config_write(ProcMsg *msg)
 {
@@ -369,21 +370,31 @@ static void process_msg(GIOCondition cond)
     case INIT:
         break;
     case CONF_WRITE:
-        process_config_write(msg);
+        if (create_done) {
+            process_config_write(msg);
+        }
+
         break;
     case CONF_READ:
-        process_config_read(msg);
+        if (create_done) {
+            process_config_read(msg);
+        }
+
         break;
     case BAR_WRITE:
-        process_bar_write(msg, &err);
-        if (err) {
-            goto finalize_loop;
+        if (create_done) {
+            process_bar_write(msg, &err);
+            if (err) {
+                error_report_err(err);
+            }
         }
         break;
     case BAR_READ:
-        process_bar_read(msg, &err);
-        if (err) {
-            goto finalize_loop;
+        if (create_done) {
+            process_bar_read(msg, &err);
+            if (err) {
+                error_report_err(err);
+            }
         }
         break;
     case SYNC_SYSMEM:
@@ -403,7 +414,7 @@ static void process_msg(GIOCondition cond)
         qemu_mutex_lock_iothread();
         qemu_run_machine_init_done_notifiers();
         qemu_mutex_unlock_iothread();
-
+        create_done = true;
         break;
     case DRIVE_OPTS:
         if (setup_drive(msg, &err)) {
-- 
2.17.1