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# TCG Plugins tests
#
# These are a little more involved than the basic tests run by check-tcg.
#
# Copyright (c) 2021 Linaro
#
# Author:
# Alex Bennée <alex.bennee@linaro.org>
#
# SPDX-License-Identifier: GPL-2.0-or-later
import tempfile
import mmap
import re
from boot_linux_console import LinuxKernelTest
class PluginKernelBase(LinuxKernelTest):
"""
Boots a Linux kernel with a TCG plugin enabled.
"""
timeout = 120
KERNEL_COMMON_COMMAND_LINE = 'printk.time=1 panic=-1 '
def run_vm(self, kernel_path, kernel_command_line,
plugin, plugin_log, console_pattern, args=None):
vm = self.get_vm()
vm.set_console()
vm.add_args('-kernel', kernel_path,
'-append', kernel_command_line,
'-plugin', plugin,
'-d', 'plugin',
'-D', plugin_log,
'-net', 'none',
'-no-reboot')
if args:
vm.add_args(*args)
try:
vm.launch()
except:
# TODO: probably fails because plugins not enabled but we
# can't currently probe for the feature.
self.cancel("TCG Plugins not enabled?")
self.wait_for_console_pattern(console_pattern, vm)
# ensure logs are flushed
vm.shutdown()
class PluginKernelNormal(PluginKernelBase):
def _grab_aarch64_kernel(self):
kernel_url = ('http://security.debian.org/'
'debian-security/pool/updates/main/l/linux-signed-arm64/'
'linux-image-4.19.0-12-arm64_4.19.152-1_arm64.deb')
kernel_sha1 = '2036c2792f80ac9c4ccaae742b2e0a28385b6010'
kernel_deb = self.fetch_asset(kernel_url, asset_hash=kernel_sha1)
kernel_path = self.extract_from_deb(kernel_deb,
"/boot/vmlinuz-4.19.0-12-arm64")
return kernel_path
def test_aarch64_virt_insn(self):
"""
:avocado: tags=accel:tcg
:avocado: tags=arch:aarch64
:avocado: tags=machine:virt
:avocado: tags=cpu:cortex-a53
"""
kernel_path = self._grab_aarch64_kernel()
kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
'console=ttyAMA0')
console_pattern = 'Kernel panic - not syncing: VFS:'
plugin_log = tempfile.NamedTemporaryFile(mode="r+t", prefix="plugin",
suffix=".log")
self.run_vm(kernel_path, kernel_command_line,
"tests/plugin/libinsn.so", plugin_log.name,
console_pattern)
with plugin_log as lf, \
mmap.mmap(lf.fileno(), 0, access=mmap.ACCESS_READ) as s:
m = re.search(br"insns: (?P<count>\d+)", s)
if "count" not in m.groupdict():
self.fail("Failed to find instruction count")
def test_aarch64_virt_insn_icount(self):
"""
:avocado: tags=accel:tcg
:avocado: tags=arch:aarch64
:avocado: tags=machine:virt
:avocado: tags=cpu:cortex-a53
"""
kernel_path = self._grab_aarch64_kernel()
kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
'console=ttyAMA0')
console_pattern = 'Kernel panic - not syncing: VFS:'
plugin_log = tempfile.NamedTemporaryFile(mode="r+t", prefix="plugin",
suffix=".log")
self.run_vm(kernel_path, kernel_command_line,
"tests/plugin/libinsn.so", plugin_log.name,
console_pattern,
args=('-icount', 'shift=1'))
with plugin_log as lf, \
mmap.mmap(lf.fileno(), 0, access=mmap.ACCESS_READ) as s:
m = re.search(br"detected repeat execution @ (?P<addr>0x[0-9A-Fa-f]+)", s)
if m is not None and "addr" in m.groupdict():
self.fail("detected repeated instructions")
def test_aarch64_virt_mem_icount(self):
"""
:avocado: tags=accel:tcg
:avocado: tags=arch:aarch64
:avocado: tags=machine:virt
:avocado: tags=cpu:cortex-a53
"""
kernel_path = self._grab_aarch64_kernel()
kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
'console=ttyAMA0')
console_pattern = 'Kernel panic - not syncing: VFS:'
plugin_log = tempfile.NamedTemporaryFile(mode="r+t", prefix="plugin",
suffix=".log")
self.run_vm(kernel_path, kernel_command_line,
"tests/plugin/libmem.so,inline=true,callback=true", plugin_log.name,
console_pattern,
args=('-icount', 'shift=1'))
with plugin_log as lf, \
mmap.mmap(lf.fileno(), 0, access=mmap.ACCESS_READ) as s:
m = re.findall(br"mem accesses: (?P<count>\d+)", s)
if m is None or len(m) != 2:
self.fail("no memory access counts found")
else:
inline = int(m[0])
callback = int(m[1])
if inline != callback:
self.fail("mismatched access counts")
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