[Qemu-devel] [RESEND PATCH V3 2/2] machine, Add default_machine_opts to QEMUMachine.

[anthony.perard@citrix.com]

From: Anthony PERARD <anthony.perard@citrix.com>

With this new field, we can specified which accelerator use to run the
machine, if the accelerator is not already specified by either a
configuration file or the command line options.

Currently, the only use will be made in the xenfv machine.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
 hw/boards.h |    1 +
 vl.c        |   22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/hw/boards.h b/hw/boards.h
index 6f0f0d7..716fd7b 100644
--- a/hw/boards.h
+++ b/hw/boards.h
@@ -27,6 +27,7 @@ typedef struct QEMUMachine {
         no_cdrom:1,
         no_sdcard:1;
     int is_default;
+    const char *default_machine_opts;
     GlobalProperty *compat_props;
     struct QEMUMachine *next;
 } QEMUMachine;
diff --git a/vl.c b/vl.c
index 6a62728..626f4e1 100644
--- a/vl.c
+++ b/vl.c
@@ -2853,6 +2853,28 @@ int main(int argc, char **argv, char **envp)
         exit(1);
     }
 
+    /*
+     * Get the default machine options from the machine if it is not already
+     * specified either by the configuration file or by the command line.
+     */
+    if (machine->default_machine_opts) {
+        QemuOptsList *list = qemu_find_opts("machine");
+        const char *p = NULL;
+
+        if (!QTAILQ_EMPTY(&list->head)) {
+            p = qemu_opt_get(QTAILQ_FIRST(&list->head), "accel");
+        }
+        if (p == NULL) {
+            opts = qemu_opts_parse(qemu_find_opts("machine"),
+                                   machine->default_machine_opts, 0);
+            if (!opts) {
+                fprintf(stderr, "parse error for machine %s: %s\n",
+                        machine->name, machine->default_machine_opts);
+                exit(1);
+            }
+        }
+    }
+
     qemu_opts_foreach(qemu_find_opts("device"), default_driver_check, NULL, 0);
     qemu_opts_foreach(qemu_find_opts("global"), default_driver_check, NULL, 0);
 
-- 
1.7.1