Re: [PATCH 1/2] hw/xen: detect when running inside stubdomain

[Philippe Mathieu-Daudé]

On 19/2/24 19:16, Marek Marczykowski-Górecki wrote:

Introduce global xen_is_stubdomain variable when qemu is running inside
a stubdomain instead of dom0. This will be relevant for subsequent
patches, as few things like accessing PCI config space need to be done
differently.

Signed-off-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com>
---
  hw/xen/xen-legacy-backend.c | 15 +++++++++++++++
  include/hw/xen/xen.h        |  1 +
  system/globals.c            |  1 +
  3 files changed, 17 insertions(+)

+static bool xen_check_stubdomain(void)
+{
+    char *dm_path = g_strdup_printf("/local/domain/%d/image", xen_domid);
+    uint32_t dm_domid;
+    bool is_stubdom = false;
+
+    if (!xenstore_read_int(dm_path, "device-model-domid", &dm_domid))

BTW missing braces for QEMU coding style: {

+        is_stubdom = dm_domid != 0;

}

+
+    g_free(dm_path);
+    return is_stubdom;
+}