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

device-plug-test.c (4372B)

      1/*
      2 * QEMU device plug/unplug handling
      3 *
      4 * Copyright (C) 2019 Red Hat Inc.
      5 *
      6 * Authors:
      7 *  David Hildenbrand <david@redhat.com>
      8 *
      9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
     10 * See the COPYING file in the top-level directory.
     11 */
     12
     13#include "qemu/osdep.h"
     14#include "libqos/libqtest.h"
     15#include "qapi/qmp/qdict.h"
     16#include "qapi/qmp/qstring.h"
     17
     18static void device_del(QTestState *qtest, const char *id)
     19{
     20    QDict *resp;
     21
     22    resp = qtest_qmp(qtest,
     23                     "{'execute': 'device_del', 'arguments': { 'id': %s } }", id);
     24
     25    g_assert(qdict_haskey(resp, "return"));
     26    qobject_unref(resp);
     27}
     28
     29static void system_reset(QTestState *qtest)
     30{
     31    QDict *resp;
     32
     33    resp = qtest_qmp(qtest, "{'execute': 'system_reset'}");
     34    g_assert(qdict_haskey(resp, "return"));
     35    qobject_unref(resp);
     36}
     37
     38static void wait_device_deleted_event(QTestState *qtest, const char *id)
     39{
     40    QDict *resp, *data;
     41    QString *qstr;
     42
     43    /*
     44     * Other devices might get removed along with the removed device. Skip
     45     * these. The device of interest will be the last one.
     46     */
     47    for (;;) {
     48        resp = qtest_qmp_eventwait_ref(qtest, "DEVICE_DELETED");
     49        data = qdict_get_qdict(resp, "data");
     50        if (!data || !qdict_get(data, "device")) {
     51            qobject_unref(resp);
     52            continue;
     53        }
     54        qstr = qobject_to(QString, qdict_get(data, "device"));
     55        g_assert(qstr);
     56        if (!strcmp(qstring_get_str(qstr), id)) {
     57            qobject_unref(resp);
     58            break;
     59        }
     60        qobject_unref(resp);
     61    }
     62}
     63
     64static void test_pci_unplug_request(void)
     65{
     66    QTestState *qtest = qtest_initf("-device virtio-mouse-pci,id=dev0");
     67
     68    /*
     69     * Request device removal. As the guest is not running, the request won't
     70     * be processed. However during system reset, the removal will be
     71     * handled, removing the device.
     72     */
     73    device_del(qtest, "dev0");
     74    system_reset(qtest);
     75    wait_device_deleted_event(qtest, "dev0");
     76
     77    qtest_quit(qtest);
     78}
     79
     80static void test_ccw_unplug(void)
     81{
     82    QTestState *qtest = qtest_initf("-device virtio-balloon-ccw,id=dev0");
     83
     84    device_del(qtest, "dev0");
     85    wait_device_deleted_event(qtest, "dev0");
     86
     87    qtest_quit(qtest);
     88}
     89
     90static void test_spapr_cpu_unplug_request(void)
     91{
     92    QTestState *qtest;
     93
     94    qtest = qtest_initf("-cpu power9_v2.0 -smp 1,maxcpus=2 "
     95                        "-device power9_v2.0-spapr-cpu-core,core-id=1,id=dev0");
     96
     97    /* similar to test_pci_unplug_request */
     98    device_del(qtest, "dev0");
     99    system_reset(qtest);
    100    wait_device_deleted_event(qtest, "dev0");
    101
    102    qtest_quit(qtest);
    103}
    104
    105static void test_spapr_memory_unplug_request(void)
    106{
    107    QTestState *qtest;
    108
    109    qtest = qtest_initf("-m 256M,slots=1,maxmem=768M "
    110                        "-object memory-backend-ram,id=mem0,size=512M "
    111                        "-device pc-dimm,id=dev0,memdev=mem0");
    112
    113    /* similar to test_pci_unplug_request */
    114    device_del(qtest, "dev0");
    115    system_reset(qtest);
    116    wait_device_deleted_event(qtest, "dev0");
    117
    118    qtest_quit(qtest);
    119}
    120
    121static void test_spapr_phb_unplug_request(void)
    122{
    123    QTestState *qtest;
    124
    125    qtest = qtest_initf("-device spapr-pci-host-bridge,index=1,id=dev0");
    126
    127    /* similar to test_pci_unplug_request */
    128    device_del(qtest, "dev0");
    129    system_reset(qtest);
    130    wait_device_deleted_event(qtest, "dev0");
    131
    132    qtest_quit(qtest);
    133}
    134
    135int main(int argc, char **argv)
    136{
    137    const char *arch = qtest_get_arch();
    138
    139    g_test_init(&argc, &argv, NULL);
    140
    141    /*
    142     * We need a system that will process unplug requests during system resets
    143     * and does not do PCI surprise removal. This holds for x86 ACPI,
    144     * s390x and spapr.
    145     */
    146    qtest_add_func("/device-plug/pci-unplug-request",
    147                   test_pci_unplug_request);
    148
    149    if (!strcmp(arch, "s390x")) {
    150        qtest_add_func("/device-plug/ccw-unplug",
    151                       test_ccw_unplug);
    152    }
    153
    154    if (!strcmp(arch, "ppc64")) {
    155        qtest_add_func("/device-plug/spapr-cpu-unplug-request",
    156                       test_spapr_cpu_unplug_request);
    157        qtest_add_func("/device-plug/spapr-memory-unplug-request",
    158                       test_spapr_memory_unplug_request);
    159        qtest_add_func("/device-plug/spapr-phb-unplug-request",
    160                       test_spapr_phb_unplug_request);
    161    }
    162
    163    return g_test_run();
    164}