jcs.org
qemu with hax to log dma reads & writes
jcs.org/2018/11/12/vfio
1# Linux initrd acceptance test.
2#
3# Copyright (c) 2018 Red Hat, Inc.
4#
5# Author:
6# Wainer dos Santos Moschetta <wainersm@redhat.com>
7#
8# This work is licensed under the terms of the GNU GPL, version 2 or
9# later. See the COPYING file in the top-level directory.
10
11import logging
12import tempfile
13
14from avocado_qemu import Test
15
16
17class LinuxInitrd(Test):
18 """
19 Checks QEMU evaluates correctly the initrd file passed as -initrd option.
20
21 :avocado: tags=arch:x86_64
22 :avocado: tags=machine:pc
23 """
24
25 timeout = 300
26
27 def test_with_2gib_file_should_exit_error_msg_with_linux_v3_6(self):
28 """
29 Pretends to boot QEMU with an initrd file with size of 2GiB
30 and expect it exits with error message.
31 Fedora-18 shipped with linux-3.6 which have not supported xloadflags
32 cannot support more than 2GiB initrd.
33 """
34 kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora/li'
35 'nux/releases/18/Fedora/x86_64/os/images/pxeboot/vmlinuz')
36 kernel_hash = '41464f68efe42b9991250bed86c7081d2ccdbb21'
37 kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
38 max_size = 2 * (1024 ** 3) - 1
39
40 with tempfile.NamedTemporaryFile() as initrd:
41 initrd.seek(max_size)
42 initrd.write(b'\0')
43 initrd.flush()
44 self.vm.add_args('-kernel', kernel_path, '-initrd', initrd.name,
45 '-m', '4096')
46 self.vm.set_qmp_monitor(enabled=False)
47 self.vm.launch()
48 self.vm.wait()
49 self.assertEqual(self.vm.exitcode(), 1)
50 expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
51 max_size + 1)
52 self.assertRegex(self.vm.get_log(), expected_msg)
53
54 def test_with_2gib_file_should_work_with_linux_v4_16(self):
55 """
56 QEMU has supported up to 4 GiB initrd for recent kernel
57 Expect guest can reach 'Unpacking initramfs...'
58 """
59 kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
60 '/linux/releases/28/Everything/x86_64/os/images/pxeboot/'
61 'vmlinuz')
62 kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
63 kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
64 max_size = 2 * (1024 ** 3) + 1
65
66 with tempfile.NamedTemporaryFile() as initrd:
67 initrd.seek(max_size)
68 initrd.write(b'\0')
69 initrd.flush()
70
71 self.vm.set_console()
72 kernel_command_line = 'console=ttyS0'
73 self.vm.add_args('-kernel', kernel_path,
74 '-append', kernel_command_line,
75 '-initrd', initrd.name,
76 '-m', '5120')
77 self.vm.launch()
78 console = self.vm.console_socket.makefile()
79 console_logger = logging.getLogger('console')
80 while True:
81 msg = console.readline()
82 console_logger.debug(msg.strip())
83 if 'Unpacking initramfs...' in msg:
84 break
85 if 'Kernel panic - not syncing' in msg:
86 self.fail("Kernel panic reached")