cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

235 (2354B)

      1#!/usr/bin/env python3
      2# group: quick
      3#
      4# Simple mirror test
      5#
      6# Copyright (c) 2018 Virtuozzo International GmbH. All rights reserved.
      7#
      8# This program is free software; you can redistribute it and/or modify
      9# it under the terms of the GNU General Public License as published by
     10# the Free Software Foundation; either version 2 of the License, or
     11# (at your option) any later version.
     12#
     13# This program is distributed in the hope that it will be useful,
     14# but WITHOUT ANY WARRANTY; without even the implied warranty of
     15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16# GNU General Public License for more details.
     17#
     18# You should have received a copy of the GNU General Public License
     19# along with this program.  If not, see <http://www.gnu.org/licenses/>.
     20#
     21
     22import sys
     23import os
     24import iotests
     25from iotests import qemu_img_create, qemu_io, file_path, log
     26
     27from qemu.machine import QEMUMachine
     28
     29iotests.script_initialize(supported_fmts=['qcow2'])
     30
     31# Note:
     32# This test was added to check that mirror dead-lock was fixed (see previous
     33# commit before this test addition).
     34# And it didn't reproduce if at least one of the following:
     35# 1. use small image size
     36# 2. use raw format (not qcow2)
     37# 3. drop kvm and use iotests.VM() (maybe, because of qtest) (however, it still
     38#    reproduces, if just drop kvm, but gdb failed to produce full backtraces
     39#    for me)
     40# 4. add iothread
     41
     42size = 1 * 1024 * 1024 * 1024
     43
     44disk = file_path('disk')
     45
     46# prepare source image
     47qemu_img_create('-f', iotests.imgfmt, '-o', 'preallocation=metadata', disk,
     48                str(size))
     49
     50vm = QEMUMachine(iotests.qemu_prog)
     51vm.add_args('-accel', 'kvm', '-accel', 'tcg')
     52if iotests.qemu_default_machine == 's390-ccw-virtio':
     53        vm.add_args('-no-shutdown')
     54vm.add_args('-drive', 'id=src,file=' + disk)
     55vm.launch()
     56
     57log(vm.qmp('object-add', qom_type='throttle-group', id='tg0',
     58           limits={'bps-total': size}))
     59
     60log(vm.qmp('blockdev-add',
     61           **{ 'node-name': 'target',
     62               'driver': 'throttle',
     63               'throttle-group': 'tg0',
     64               'file': {
     65                   'driver': 'null-co',
     66                   'size': size
     67                } }))
     68
     69log(vm.qmp('blockdev-mirror', device='src', target='target', sync='full'))
     70
     71try:
     72    vm.event_wait('BLOCK_JOB_READY', timeout=10.0)
     73except:
     74    vm.shutdown()
     75    raise
     76
     77vm.shutdown()