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

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      1#!/usr/bin/env python3
      2# group: rw quick
      3#
      4# Test commit job graph modifications while requests are active
      5#
      6# Copyright (C) 2019 Red Hat, Inc.
      7#
      8# Creator/Owner: Kevin Wolf <kwolf@redhat.com>
      9#
     10# This program is free software; you can redistribute it and/or modify
     11# it under the terms of the GNU General Public License as published by
     12# the Free Software Foundation; either version 2 of the License, or
     13# (at your option) any later version.
     14#
     15# This program is distributed in the hope that it will be useful,
     16# but WITHOUT ANY WARRANTY; without even the implied warranty of
     17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     18# GNU General Public License for more details.
     19#
     20# You should have received a copy of the GNU General Public License
     21# along with this program.  If not, see <http://www.gnu.org/licenses/>.
     22#
     23
     24import iotests
     25from iotests import imgfmt
     26
     27iotests.script_initialize(supported_fmts=['qcow2'])
     28
     29iotests.log('Finishing a commit job with background reads')
     30iotests.log('============================================')
     31iotests.log('')
     32
     33with iotests.FilePath('t.qcow2') as disk_path, \
     34     iotests.FilePath('t.qcow2.mid') as mid_path, \
     35     iotests.FilePath('t.qcow2.base') as base_path, \
     36     iotests.VM() as vm:
     37
     38    iotests.log("=== Create backing chain and start VM ===")
     39    iotests.log("")
     40
     41    size = 128 * 1024 * 1024
     42    size_str = str(size)
     43
     44    iotests.create_image(base_path, size)
     45    iotests.qemu_img_log('create', '-f', iotests.imgfmt, mid_path, size_str)
     46    iotests.qemu_img_log('create', '-f', iotests.imgfmt, disk_path, size_str)
     47
     48    # Create a backing chain like this:
     49    # base <- [throttled: bps-read=4096] <- mid <- overlay
     50
     51    vm.add_object('throttle-group,x-bps-read=4096,id=throttle0')
     52    vm.add_blockdev('file,filename=%s,node-name=base' % (base_path))
     53    vm.add_blockdev('throttle,throttle-group=throttle0,file=base,node-name=throttled')
     54    vm.add_blockdev('file,filename=%s,node-name=mid-file' % (mid_path))
     55    vm.add_blockdev('qcow2,file=mid-file,node-name=mid,backing=throttled')
     56    vm.add_drive_raw('if=none,id=overlay,driver=qcow2,file=%s,backing=mid' % (disk_path))
     57
     58    vm.launch()
     59
     60    iotests.log("=== Start background read requests ===")
     61    iotests.log("")
     62
     63    def start_requests():
     64        vm.hmp_qemu_io('overlay', 'aio_read 0 4k')
     65        vm.hmp_qemu_io('overlay', 'aio_read 0 4k')
     66
     67    start_requests()
     68
     69    iotests.log("=== Run a commit job ===")
     70    iotests.log("")
     71
     72    result = vm.qmp_log('block-commit', job_id='job0', auto_finalize=False,
     73                        device='overlay', top_node='mid')
     74
     75    vm.run_job('job0', auto_finalize=False, pre_finalize=start_requests,
     76                auto_dismiss=True)
     77
     78    vm.shutdown()
     79
     80iotests.log('')
     81iotests.log('Closing the VM while a job is being cancelled')
     82iotests.log('=============================================')
     83iotests.log('')
     84
     85with iotests.FilePath('src.qcow2') as src_path, \
     86     iotests.FilePath('dst.qcow2') as dst_path, \
     87     iotests.VM() as vm:
     88
     89    iotests.log('=== Create images and start VM ===')
     90    iotests.log('')
     91
     92    size = 128 * 1024 * 1024
     93    size_str = str(size)
     94
     95    iotests.qemu_img_log('create', '-f', iotests.imgfmt, src_path, size_str)
     96    iotests.qemu_img_log('create', '-f', iotests.imgfmt, dst_path, size_str)
     97
     98    iotests.log(iotests.qemu_io('-f', iotests.imgfmt, '-c', 'write 0 1M',
     99                                src_path),
    100                filters=[iotests.filter_test_dir, iotests.filter_qemu_io])
    101
    102    vm.add_object('throttle-group,x-bps-read=4096,id=throttle0')
    103
    104    vm.add_blockdev('file,node-name=src-file,filename=%s' % (src_path))
    105    vm.add_blockdev('%s,node-name=src,file=src-file' % (iotests.imgfmt))
    106
    107    vm.add_blockdev('file,node-name=dst-file,filename=%s' % (dst_path))
    108    vm.add_blockdev('%s,node-name=dst,file=dst-file' % (iotests.imgfmt))
    109
    110    vm.add_blockdev('throttle,node-name=src-throttled,' +
    111                    'throttle-group=throttle0,file=src')
    112
    113    vm.add_device('virtio-blk,drive=src-throttled')
    114
    115    vm.launch()
    116
    117    iotests.log('=== Start a mirror job ===')
    118    iotests.log('')
    119
    120    vm.qmp_log('blockdev-mirror', job_id='job0', device='src-throttled',
    121                                  target='dst', sync='full')
    122
    123    vm.qmp_log('block-job-cancel', device='job0')
    124    vm.qmp_log('quit')
    125
    126    vm.shutdown(has_quit=True)