From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dietmar Maurer <dietmar@proxmox.com>
Date: Mon, 6 Apr 2020 12:16:55 +0200
Subject: [PATCH] PVE: Allow version code in machine type

E.g. pc-i440fx-4.0+pve3 would print 'pve3' as version code while
selecting pc-i440fx-4.0 as machine type.

Version is made available as 'pve-version' in query-machines (same as,
and only if 'is-current').

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
---
 hw/core/machine-qmp-cmds.c |  6 ++++++
 include/hw/boards.h        |  2 ++
 qapi/machine.json          |  4 +++-
 softmmu/vl.c               | 15 ++++++++++++++-
 4 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
index 76195de9e0..e622f65bca 100644
--- a/hw/core/machine-qmp-cmds.c
+++ b/hw/core/machine-qmp-cmds.c
@@ -104,6 +104,12 @@ MachineInfoList *qmp_query_machines(Error **errp)
         if (strcmp(mc->name, MACHINE_GET_CLASS(current_machine)->name) == 0) {
             info->has_is_current = true;
             info->is_current = true;
+
+            // PVE version string only exists for current machine
+            if (mc->pve_version) {
+                info->has_pve_version = true;
+                info->pve_version = g_strdup(mc->pve_version);
+            }
         }
 
         if (mc->default_cpu_type) {
diff --git a/include/hw/boards.h b/include/hw/boards.h
index ad6c8fd537..00ee74c5eb 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -206,6 +206,8 @@ struct MachineClass {
     const char *desc;
     const char *deprecation_reason;
 
+    const char *pve_version;
+
     void (*init)(MachineState *state);
     void (*reset)(MachineState *state);
     void (*wakeup)(MachineState *state);
diff --git a/qapi/machine.json b/qapi/machine.json
index 6e7e93d68f..7f5ba02c95 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -160,6 +160,8 @@
 #
 # @default-ram-id: the default ID of initial RAM memory backend (since 5.2)
 #
+# @pve-version: custom PVE version suffix specified as 'machine+pveN'
+#
 # Since: 1.2
 ##
 { 'struct': 'MachineInfo',
@@ -167,7 +169,7 @@
             '*is-default': 'bool', '*is-current': 'bool', 'cpu-max': 'int',
             'hotpluggable-cpus': 'bool',  'numa-mem-supported': 'bool',
             'deprecated': 'bool', '*default-cpu-type': 'str',
-            '*default-ram-id': 'str' } }
+            '*default-ram-id': 'str', '*pve-version': 'str' } }
 
 ##
 # @query-machines:
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 12ec053422..a3c7ef0ab4 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -1537,6 +1537,8 @@ static MachineClass *machine_parse(const char *name, GSList *machines)
 {
     MachineClass *mc;
     GSList *el;
+    size_t pvever_index = 0;
+    gchar *name_clean;
 
     if (is_help_option(name)) {
         printf("Supported machines are:\n");
@@ -1553,12 +1555,23 @@ static MachineClass *machine_parse(const char *name, GSList *machines)
         exit(0);
     }
 
-    mc = find_machine(name, machines);
+    // PVE version is specified with '+' as seperator, e.g. pc-i440fx+pvever
+    pvever_index = strcspn(name, "+");
+
+    name_clean = g_strndup(name, pvever_index);
+    mc = find_machine(name_clean, machines);
+    g_free(name_clean);
+
     if (!mc) {
         error_report("unsupported machine type");
         error_printf("Use -machine help to list supported machines\n");
         exit(1);
     }
+
+    if (pvever_index < strlen(name)) {
+        mc->pve_version = &name[pvever_index+1];
+    }
+
     return mc;
 }