tests/vm: Add a BaseVM::arch property

The 'arch' property gives a hint on which architecture the guest image runs.

This can be use to select the correct QEMU binary path.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20181013004034.6968-6-f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Fam Zheng <famz@redhat.com>

tests/vm/basevm.py

@@ -42,6 +42,8 @@ class BaseVM(object):
     BUILD_SCRIPT = ""
     # The guest name, to be overridden by subclasses
     name = "#base"
+    # The guest architecture, to be overridden by subclasses
+    arch = "#arch"
     def __init__(self, debug=False, vcpus=None):
         self._guest = None
         self._tmpdir = os.path.realpath(tempfile.mkdtemp(prefix="vm-test-",
@@ -151,7 +153,7 @@ class BaseVM(object):
             "-device", "virtio-blk,drive=drive0,bootindex=0"]
         args += self._data_args + extra_args
         logging.debug("QEMU args: %s", " ".join(args))
-        qemu_bin = os.environ.get("QEMU", "qemu-system-x86_64")
+        qemu_bin = os.environ.get("QEMU", "qemu-system-" + self.arch)
         guest = QEMUMachine(binary=qemu_bin, args=args)
         try:
             guest.launch()

tests/vm/centos

@@ -19,6 +19,7 @@ import time
 
 class CentosVM(basevm.BaseVM):
     name = "centos"
+    arch = "x86_64"
     BUILD_SCRIPT = """
         set -e;
         cd $(mktemp -d);

tests/vm/freebsd

@@ -18,6 +18,7 @@ import basevm
 
 class FreeBSDVM(basevm.BaseVM):
     name = "freebsd"
+    arch = "x86_64"
     BUILD_SCRIPT = """
         set -e;
         rm -rf /var/tmp/qemu-test.*

tests/vm/netbsd

@@ -18,6 +18,7 @@ import basevm
 
 class NetBSDVM(basevm.BaseVM):
     name = "netbsd"
+    arch = "x86_64"
     BUILD_SCRIPT = """
         set -e;
         rm -rf /var/tmp/qemu-test.*

tests/vm/openbsd

@@ -18,6 +18,7 @@ import basevm
 
 class OpenBSDVM(basevm.BaseVM):
     name = "openbsd"
+    arch = "x86_64"
     BUILD_SCRIPT = """
         set -e;
         rm -rf /var/tmp/qemu-test.*

tests/vm/ubuntu.i386

@@ -19,6 +19,7 @@ import time
 
 class UbuntuX86VM(basevm.BaseVM):
     name = "ubuntu.i386"
+    arch = "i386"
     BUILD_SCRIPT = """
         set -e;
         cd $(mktemp -d);