Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2018-12-17' into staging

- Replace global_qtest in some tests
- Exit boot-serial-test loop if child dies
- Sanitize verbose output in biot-tables-test

# gpg: Signature made Mon 17 Dec 2018 16:08:07 GMT
# gpg:                using RSA key 2ED9D774FE702DB5
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>"
# gpg:                 aka "Thomas Huth <thuth@redhat.com>"
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>"
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>"
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2018-12-17:
  tests/bios-tables-test: Sanitize test verbose output
  tests: acpi: remove not used ACPI_READ_GENERIC_ADDRESS macro
  tests: Exit boot-serial-test loop if child dies
  tests/pxe: Make test independent of global_qtest
  tests/prom-env: Make test independent of global_qtest
  tests/machine-none: Make test independent of global_qtest
  tests/test-filter: Make tests independent of global_qtest
  tests/boot-serial: Get rid of global_qtest variable
  tests/pvpanic: Make the pvpanic test independent of global_qtest
  tests/vmgenid: Make test independent of global_qtest
  tests/acpi-utils: Drop dependence on global_qtest
  ivshmem-test: Drop dependence on global_qtest
  tests/libqos/pci: Make PCI access functions independent of global_qtest

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

16 files changed, 258 insertions, 228 deletions

diff --git a/tests/acpi-utils.c b/tests/acpi-utils.c
index 41dc1ea9b4..6dc8ca1a8c 100644
--- a/tests/acpi-utils.c
+++ b/tests/acpi-utils.c
@@ -32,7 +32,7 @@ uint8_t acpi_calc_checksum(const uint8_t *data, int len)
     return sum;
 }
 
-uint32_t acpi_find_rsdp_address(void)
+uint32_t acpi_find_rsdp_address(QTestState *qts)
 {
     uint32_t off;
 
@@ -42,7 +42,7 @@ uint32_t acpi_find_rsdp_address(void)
         int i;
 
         for (i = 0; i < sizeof sig - 1; ++i) {
-            sig[i] = readb(off + i);
+            sig[i] = qtest_readb(qts, off + i);
         }
 
         if (!memcmp(sig, "RSD PTR ", sizeof sig)) {
@@ -52,14 +52,15 @@ uint32_t acpi_find_rsdp_address(void)
     return off;
 }
 
-void acpi_parse_rsdp_table(uint32_t addr, AcpiRsdpDescriptor *rsdp_table)
+void acpi_parse_rsdp_table(QTestState *qts, uint32_t addr,
+                           AcpiRsdpDescriptor *rsdp_table)
 {
-    ACPI_READ_FIELD(rsdp_table->signature, addr);
+    ACPI_READ_FIELD(qts, rsdp_table->signature, addr);
     ACPI_ASSERT_CMP64(rsdp_table->signature, "RSD PTR ");
 
-    ACPI_READ_FIELD(rsdp_table->checksum, addr);
-    ACPI_READ_ARRAY(rsdp_table->oem_id, addr);
-    ACPI_READ_FIELD(rsdp_table->revision, addr);
-    ACPI_READ_FIELD(rsdp_table->rsdt_physical_address, addr);
-    ACPI_READ_FIELD(rsdp_table->length, addr);
+    ACPI_READ_FIELD(qts, rsdp_table->checksum, addr);
+    ACPI_READ_ARRAY(qts, rsdp_table->oem_id, addr);
+    ACPI_READ_FIELD(qts, rsdp_table->revision, addr);
+    ACPI_READ_FIELD(qts, rsdp_table->rsdt_physical_address, addr);
+    ACPI_READ_FIELD(qts, rsdp_table->length, addr);
 }
diff --git a/tests/acpi-utils.h b/tests/acpi-utils.h
index ac52abd0dd..791bd5410e 100644
--- a/tests/acpi-utils.h
+++ b/tests/acpi-utils.h
@@ -28,34 +28,34 @@ typedef struct {
     bool tmp_files_retain;   /* do not delete the temp asl/aml */
 } AcpiSdtTable;
 
-#define ACPI_READ_FIELD(field, addr)            \
-    do {                                        \
-        memread(addr, &field, sizeof(field));   \
-        addr += sizeof(field);                  \
+#define ACPI_READ_FIELD(qts, field, addr)                \
+    do {                                                 \
+        qtest_memread(qts, addr, &field, sizeof(field)); \
+        addr += sizeof(field);                           \
     } while (0)
 
-#define ACPI_READ_ARRAY_PTR(arr, length, addr)  \
-    do {                                        \
-        int idx;                                \
-        for (idx = 0; idx < length; ++idx) {    \
-            ACPI_READ_FIELD(arr[idx], addr);    \
-        }                                       \
+#define ACPI_READ_ARRAY_PTR(qts, arr, length, addr)      \
+    do {                                                 \
+        int idx;                                         \
+        for (idx = 0; idx < length; ++idx) {             \
+            ACPI_READ_FIELD(qts, arr[idx], addr);        \
+        }                                                \
     } while (0)
 
-#define ACPI_READ_ARRAY(arr, addr)                               \
-    ACPI_READ_ARRAY_PTR(arr, sizeof(arr) / sizeof(arr[0]), addr)
+#define ACPI_READ_ARRAY(qts, arr, addr)                                 \
+    ACPI_READ_ARRAY_PTR(qts, arr, sizeof(arr) / sizeof(arr[0]), addr)
 
-#define ACPI_READ_TABLE_HEADER(table, addr)                      \
+#define ACPI_READ_TABLE_HEADER(qts, table, addr)                 \
     do {                                                         \
-        ACPI_READ_FIELD((table)->signature, addr);               \
-        ACPI_READ_FIELD((table)->length, addr);                  \
-        ACPI_READ_FIELD((table)->revision, addr);                \
-        ACPI_READ_FIELD((table)->checksum, addr);                \
-        ACPI_READ_ARRAY((table)->oem_id, addr);                  \
-        ACPI_READ_ARRAY((table)->oem_table_id, addr);            \
-        ACPI_READ_FIELD((table)->oem_revision, addr);            \
-        ACPI_READ_ARRAY((table)->asl_compiler_id, addr);         \
-        ACPI_READ_FIELD((table)->asl_compiler_revision, addr);   \
+        ACPI_READ_FIELD(qts, (table)->signature, addr);          \
+        ACPI_READ_FIELD(qts, (table)->length, addr);             \
+        ACPI_READ_FIELD(qts, (table)->revision, addr);           \
+        ACPI_READ_FIELD(qts, (table)->checksum, addr);           \
+        ACPI_READ_ARRAY(qts, (table)->oem_id, addr);             \
+        ACPI_READ_ARRAY(qts, (table)->oem_table_id, addr);       \
+        ACPI_READ_FIELD(qts, (table)->oem_revision, addr);       \
+        ACPI_READ_ARRAY(qts, (table)->asl_compiler_id, addr);    \
+        ACPI_READ_FIELD(qts, (table)->asl_compiler_revision, addr);     \
     } while (0)
 
 #define ACPI_ASSERT_CMP(actual, expected) do { \
@@ -70,18 +70,11 @@ typedef struct {
     g_assert_cmpstr(ACPI_ASSERT_CMP_str, ==, expected); \
 } while (0)
 
-#define ACPI_READ_GENERIC_ADDRESS(field, addr)       \
-    do {                                             \
-        ACPI_READ_FIELD((field).space_id, addr);     \
-        ACPI_READ_FIELD((field).bit_width, addr);    \
-        ACPI_READ_FIELD((field).bit_offset, addr);   \
-        ACPI_READ_FIELD((field).access_width, addr); \
-        ACPI_READ_FIELD((field).address, addr);      \
-    } while (0)
 
 
 uint8_t acpi_calc_checksum(const uint8_t *data, int len);
-uint32_t acpi_find_rsdp_address(void);
-void acpi_parse_rsdp_table(uint32_t addr, AcpiRsdpDescriptor *rsdp_table);
+uint32_t acpi_find_rsdp_address(QTestState *qts);
+void acpi_parse_rsdp_table(QTestState *qts, uint32_t addr,
+                           AcpiRsdpDescriptor *rsdp_table);
 
 #endif  /* TEST_ACPI_UTILS_H */
diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index d661d9be62..bac4b0171b 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -39,6 +39,7 @@ typedef struct {
     struct smbios_21_entry_point smbios_ep_table;
     uint8_t *required_struct_types;
     int required_struct_types_len;
+    QTestState *qts;
 } test_data;
 
 static char disk[] = "tests/acpi-test-disk-XXXXXX";
@@ -78,7 +79,7 @@ static void free_test_data(test_data *data)
 
 static void test_acpi_rsdp_address(test_data *data)
 {
-    uint32_t off = acpi_find_rsdp_address();
+    uint32_t off = acpi_find_rsdp_address(data->qts);
     g_assert_cmphex(off, <, 0x100000);
     data->rsdp_addr = off;
 }
@@ -88,7 +89,7 @@ static void test_acpi_rsdp_table(test_data *data)
     AcpiRsdpDescriptor *rsdp_table = &data->rsdp_table;
     uint32_t addr = data->rsdp_addr;
 
-    acpi_parse_rsdp_table(addr, rsdp_table);
+    acpi_parse_rsdp_table(data->qts, addr, rsdp_table);
 
     /* rsdp checksum is not for the whole table, but for the first 20 bytes */
     g_assert(!acpi_calc_checksum((uint8_t *)rsdp_table, 20));
@@ -104,7 +105,7 @@ static void test_acpi_rsdt_table(test_data *data)
     uint32_t rsdt_table_length;
 
     /* read the header */
-    ACPI_READ_TABLE_HEADER(rsdt_table, addr);
+    ACPI_READ_TABLE_HEADER(data->qts, rsdt_table, addr);
     ACPI_ASSERT_CMP(rsdt_table->signature, "RSDT");
 
     rsdt_table_length = le32_to_cpu(rsdt_table->length);
@@ -116,7 +117,7 @@ static void test_acpi_rsdt_table(test_data *data)
 
     /* get the addresses of the tables pointed by rsdt */
     tables = g_new0(uint32_t, tables_nr);
-    ACPI_READ_ARRAY_PTR(tables, tables_nr, addr);
+    ACPI_READ_ARRAY_PTR(data->qts, tables, tables_nr, addr);
 
     checksum = acpi_calc_checksum((uint8_t *)rsdt_table, rsdt_table_length) +
                acpi_calc_checksum((uint8_t *)tables,
@@ -135,11 +136,11 @@ static void fadt_fetch_facs_and_dsdt_ptrs(test_data *data)
 
     /* FADT table comes first */
     addr = le32_to_cpu(data->rsdt_tables_addr[0]);
-    ACPI_READ_TABLE_HEADER(&hdr, addr);
+    ACPI_READ_TABLE_HEADER(data->qts, &hdr, addr);
     ACPI_ASSERT_CMP(hdr.signature, "FACP");
 
-    ACPI_READ_FIELD(data->facs_addr, addr);
-    ACPI_READ_FIELD(data->dsdt_addr, addr);
+    ACPI_READ_FIELD(data->qts, data->facs_addr, addr);
+    ACPI_READ_FIELD(data->qts, data->dsdt_addr, addr);
 }
 
 static void sanitize_fadt_ptrs(test_data *data)
@@ -182,13 +183,13 @@ static void test_acpi_facs_table(test_data *data)
     AcpiFacsDescriptorRev1 *facs_table = &data->facs_table;
     uint32_t addr = le32_to_cpu(data->facs_addr);
 
-    ACPI_READ_FIELD(facs_table->signature, addr);
-    ACPI_READ_FIELD(facs_table->length, addr);
-    ACPI_READ_FIELD(facs_table->hardware_signature, addr);
-    ACPI_READ_FIELD(facs_table->firmware_waking_vector, addr);
-    ACPI_READ_FIELD(facs_table->global_lock, addr);
-    ACPI_READ_FIELD(facs_table->flags, addr);
-    ACPI_READ_ARRAY(facs_table->resverved3, addr);
+    ACPI_READ_FIELD(data->qts, facs_table->signature, addr);
+    ACPI_READ_FIELD(data->qts, facs_table->length, addr);
+    ACPI_READ_FIELD(data->qts, facs_table->hardware_signature, addr);
+    ACPI_READ_FIELD(data->qts, facs_table->firmware_waking_vector, addr);
+    ACPI_READ_FIELD(data->qts, facs_table->global_lock, addr);
+    ACPI_READ_FIELD(data->qts, facs_table->flags, addr);
+    ACPI_READ_ARRAY(data->qts, facs_table->resverved3, addr);
 
     ACPI_ASSERT_CMP(facs_table->signature, "FACS");
 }
@@ -197,17 +198,17 @@ static void test_acpi_facs_table(test_data *data)
  *   load ACPI table at @addr into table descriptor @sdt_table
  *   and check that header checksum matches actual one.
  */
-static void fetch_table(AcpiSdtTable *sdt_table, uint32_t addr)
+static void fetch_table(QTestState *qts, AcpiSdtTable *sdt_table, uint32_t addr)
 {
     uint8_t checksum;
 
     memset(sdt_table, 0, sizeof(*sdt_table));
-    ACPI_READ_TABLE_HEADER(&sdt_table->header, addr);
+    ACPI_READ_TABLE_HEADER(qts, &sdt_table->header, addr);
 
     sdt_table->aml_len = le32_to_cpu(sdt_table->header.length)
                          - sizeof(AcpiTableHeader);
     sdt_table->aml = g_malloc0(sdt_table->aml_len);
-    ACPI_READ_ARRAY_PTR(sdt_table->aml, sdt_table->aml_len, addr);
+    ACPI_READ_ARRAY_PTR(qts, sdt_table->aml, sdt_table->aml_len, addr);
 
     checksum = acpi_calc_checksum((uint8_t *)sdt_table,
                                   sizeof(AcpiTableHeader)) +
@@ -221,7 +222,7 @@ static void test_acpi_dsdt_table(test_data *data)
     AcpiSdtTable dsdt_table;
     uint32_t addr = le32_to_cpu(data->dsdt_addr);
 
-    fetch_table(&dsdt_table, addr);
+    fetch_table(data->qts, &dsdt_table, addr);
     ACPI_ASSERT_CMP(dsdt_table.header.signature, "DSDT");
 
     /* Since DSDT isn't in RSDT, add DSDT to ASL test tables list manually */
@@ -239,7 +240,7 @@ static void fetch_rsdt_referenced_tables(test_data *data)
         uint32_t addr;
 
         addr = le32_to_cpu(data->rsdt_tables_addr[i]);
-        fetch_table(&ssdt_table, addr);
+        fetch_table(data->qts, &ssdt_table, addr);
 
         /* Add table to ASL test tables list */
         g_array_append_val(data->tables, ssdt_table);
@@ -371,6 +372,9 @@ static GArray *load_expected_aml(test_data *data)
     gboolean ret;
 
     GArray *exp_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
+    if (getenv("V")) {
+        fputc('\n', stderr);
+    }
     for (i = 0; i < data->tables->len; ++i) {
         AcpiSdtTable exp_sdt;
         gchar *aml_file = NULL;
@@ -385,7 +389,7 @@ try_again:
         aml_file = g_strdup_printf("%s/%s/%.4s%s", data_dir, data->machine,
                                    (gchar *)&sdt->header.signature, ext);
         if (getenv("V")) {
-            fprintf(stderr, "\nLooking for expected file '%s'\n", aml_file);
+            fprintf(stderr, "Looking for expected file '%s'\n", aml_file);
         }
         if (g_file_test(aml_file, G_FILE_TEST_EXISTS)) {
             exp_sdt.aml_file = aml_file;
@@ -397,7 +401,7 @@ try_again:
         }
         g_assert(exp_sdt.aml_file);
         if (getenv("V")) {
-            fprintf(stderr, "\nUsing expected file '%s'\n", aml_file);
+            fprintf(stderr, "Using expected file '%s'\n", aml_file);
         }
         ret = g_file_get_contents(aml_file, &exp_sdt.aml,
                                   &exp_sdt.aml_len, &error);
@@ -482,32 +486,32 @@ static bool smbios_ep_table_ok(test_data *data)
     struct smbios_21_entry_point *ep_table = &data->smbios_ep_table;
     uint32_t addr = data->smbios_ep_addr;
 
-    ACPI_READ_ARRAY(ep_table->anchor_string, addr);
+    ACPI_READ_ARRAY(data->qts, ep_table->anchor_string, addr);
     if (memcmp(ep_table->anchor_string, "_SM_", 4)) {
         return false;
     }
-    ACPI_READ_FIELD(ep_table->checksum, addr);
-    ACPI_READ_FIELD(ep_table->length, addr);
-    ACPI_READ_FIELD(ep_table->smbios_major_version, addr);
-    ACPI_READ_FIELD(ep_table->smbios_minor_version, addr);
-    ACPI_READ_FIELD(ep_table->max_structure_size, addr);
-    ACPI_READ_FIELD(ep_table->entry_point_revision, addr);
-    ACPI_READ_ARRAY(ep_table->formatted_area, addr);
-    ACPI_READ_ARRAY(ep_table->intermediate_anchor_string, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->checksum, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->length, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->smbios_major_version, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->smbios_minor_version, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->max_structure_size, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->entry_point_revision, addr);
+    ACPI_READ_ARRAY(data->qts, ep_table->formatted_area, addr);
+    ACPI_READ_ARRAY(data->qts, ep_table->intermediate_anchor_string, addr);
     if (memcmp(ep_table->intermediate_anchor_string, "_DMI_", 5)) {
         return false;
     }
-    ACPI_READ_FIELD(ep_table->intermediate_checksum, addr);
-    ACPI_READ_FIELD(ep_table->structure_table_length, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->intermediate_checksum, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->structure_table_length, addr);
     if (ep_table->structure_table_length == 0) {
         return false;
     }
-    ACPI_READ_FIELD(ep_table->structure_table_address, addr);
-    ACPI_READ_FIELD(ep_table->number_of_structures, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->structure_table_address, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->number_of_structures, addr);
     if (ep_table->number_of_structures == 0) {
         return false;
     }
-    ACPI_READ_FIELD(ep_table->smbios_bcd_revision, addr);
+    ACPI_READ_FIELD(data->qts, ep_table->smbios_bcd_revision, addr);
     if (acpi_calc_checksum((uint8_t *)ep_table, sizeof *ep_table) ||
         acpi_calc_checksum((uint8_t *)ep_table + 0x10,
                            sizeof *ep_table - 0x10)) {
@@ -526,7 +530,7 @@ static void test_smbios_entry_point(test_data *data)
         int i;
 
         for (i = 0; i < sizeof sig - 1; ++i) {
-            sig[i] = readb(off + i);
+            sig[i] = qtest_readb(data->qts, off + i);
         }
 
         if (!memcmp(sig, "_SM_", sizeof sig)) {
@@ -569,9 +573,9 @@ static void test_smbios_structs(test_data *data)
     for (i = 0; i < le16_to_cpu(ep_table->number_of_structures); i++) {
 
         /* grab type and formatted area length from struct header */
-        type = readb(addr);
+        type = qtest_readb(data->qts, addr);
         g_assert_cmpuint(type, <=, SMBIOS_MAX_TYPE);
-        len = readb(addr + 1);
+        len = qtest_readb(data->qts, addr + 1);
 
         /* single-instance structs must not have been encountered before */
         if (smbios_single_instance(type)) {
@@ -583,7 +587,7 @@ static void test_smbios_structs(test_data *data)
         prv = crt = 1;
         while (prv || crt) {
             prv = crt;
-            crt = readb(addr + len);
+            crt = qtest_readb(data->qts, addr + len);
             len++;
         }
 
@@ -620,9 +624,9 @@ static void test_acpi_one(const char *params, test_data *data)
                            data->machine, "kvm:tcg",
                            params ? params : "", disk);
 
-    qtest_start(args);
+    data->qts = qtest_init(args);
 
-    boot_sector_test(global_qtest);
+    boot_sector_test(data->qts);
 
     data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
     test_acpi_rsdp_address(data);
@@ -646,7 +650,8 @@ static void test_acpi_one(const char *params, test_data *data)
     test_smbios_entry_point(data);
     test_smbios_structs(data);
 
-    qtest_quit(global_qtest);
+    assert(!global_qtest);
+    qtest_quit(data->qts);
     g_free(args);
 }
 
diff --git a/tests/boot-serial-test.c b/tests/boot-serial-test.c
index 8ec6aed35d..58a48f39bf 100644
--- a/tests/boot-serial-test.c
+++ b/tests/boot-serial-test.c
@@ -128,13 +128,14 @@ static testdef_t tests[] = {
     { NULL }
 };
 
-static bool check_guest_output(const testdef_t *test, int fd)
+static bool check_guest_output(QTestState *qts, const testdef_t *test, int fd)
 {
-    int i, nbr = 0, pos = 0, ccnt;
+    int nbr = 0, pos = 0, ccnt;
+    time_t now, start = time(NULL);
     char ch;
 
-    /* Poll serial output... Wait at most 360 seconds */
-    for (i = 0; i < 36000; ++i) {
+    /* Poll serial output... */
+    while (1) {
         ccnt = 0;
         while (ccnt++ < 512 && (nbr = read(fd, &ch, 1)) == 1) {
             if (ch == test->expect[pos]) {
@@ -148,6 +149,15 @@ static bool check_guest_output(const testdef_t *test, int fd)
             }
         }
         g_assert(nbr >= 0);
+        /* Wait only if the child is still alive.  */
+        if (!qtest_probe_child(qts)) {
+            break;
+        }
+        /* Wait at most 360 seconds.  */
+        now = time(NULL);
+        if (now - start >= 360) {
+            break;
+        }
         g_usleep(10000);
     }
 
@@ -161,6 +171,7 @@ static void test_machine(const void *data)
     char codetmp[] = "/tmp/qtest-boot-serial-cXXXXXX";
     const char *codeparam = "";
     const uint8_t *code = NULL;
+    QTestState *qts;
     int ser_fd;
 
     ser_fd = mkstemp(serialtmp);
@@ -189,22 +200,22 @@ static void test_machine(const void *data)
      * Make sure that this test uses tcg if available: It is used as a
      * fast-enough smoketest for that.
      */
-    global_qtest = qtest_initf("%s %s -M %s,accel=tcg:kvm "
-                               "-chardev file,id=serial0,path=%s "
-                               "-no-shutdown -serial chardev:serial0 %s",
-                               codeparam, code ? codetmp : "",
-                               test->machine, serialtmp, test->extra);
+    qts = qtest_initf("%s %s -M %s,accel=tcg:kvm -no-shutdown "
+                      "-chardev file,id=serial0,path=%s "
+                      "-serial chardev:serial0 %s",
+                      codeparam, code ? codetmp : "", test->machine,
+                      serialtmp, test->extra);
     if (code) {
         unlink(codetmp);
     }
 
-    if (!check_guest_output(test, ser_fd)) {
+    if (!check_guest_output(qts, test, ser_fd)) {
         g_error("Failed to find expected string. Please check '%s'",
                 serialtmp);
     }
     unlink(serialtmp);
 
-    qtest_quit(global_qtest);
+    qtest_quit(qts);
 
     close(ser_fd);
 }
diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
index c37b196b32..089e268154 100644
--- a/tests/ivshmem-test.c
+++ b/tests/ivshmem-test.c
@@ -71,13 +71,10 @@ static const char* reg2str(enum Reg reg) {
 static inline unsigned in_reg(IVState *s, enum Reg reg)
 {
     const char *name = reg2str(reg);
-    QTestState *qtest = global_qtest;
     unsigned res;
 
-    global_qtest = s->qs->qts;
     res = qpci_io_readl(s->dev, s->reg_bar, reg);
     g_test_message("*%s -> %x\n", name, res);
-    global_qtest = qtest;
 
     return res;
 }
@@ -85,35 +82,25 @@ static inline unsigned in_reg(IVState *s, enum Reg reg)
 static inline void out_reg(IVState *s, enum Reg reg, unsigned v)
 {
     const char *name = reg2str(reg);
-    QTestState *qtest = global_qtest;
 
-    global_qtest = s->qs->qts;
     g_test_message("%x -> *%s\n", v, name);
     qpci_io_writel(s->dev, s->reg_bar, reg, v);
-    global_qtest = qtest;
 }
 
 static inline void read_mem(IVState *s, uint64_t off, void *buf, size_t len)
 {
-    QTestState *qtest = global_qtest;
-
-    global_qtest = s->qs->qts;
     qpci_memread(s->dev, s->mem_bar, off, buf, len);
-    global_qtest = qtest;
 }
 
 static inline void write_mem(IVState *s, uint64_t off,
                              const void *buf, size_t len)
 {
-    QTestState *qtest = global_qtest;
-
-    global_qtest = s->qs->qts;
     qpci_memwrite(s->dev, s->mem_bar, off, buf, len);
-    global_qtest = qtest;
 }
 
 static void cleanup_vm(IVState *s)
 {
+    assert(!global_qtest);
     g_free(s->dev);
     qtest_shutdown(s->qs);
 }
@@ -131,7 +118,6 @@ static void setup_vm_cmd(IVState *s, const char *cmd, bool msix)
         g_printerr("ivshmem-test tests are only available on x86 or ppc64\n");
         exit(EXIT_FAILURE);
     }
-    global_qtest = s->qs->qts;
     s->dev = get_device(s->qs->pcibus);
 
     s->reg_bar = qpci_iomap(s->dev, 0, &barsize);
@@ -354,7 +340,6 @@ static void test_ivshmem_server(bool msi)
     g_assert_cmpint(vm1, !=, vm2);
 
     /* check number of MSI-X vectors */
-    global_qtest = s1->qs->qts;
     if (msi) {
         ret = qpci_msix_table_size(s1->dev);
         g_assert_cmpuint(ret, ==, nvectors);
@@ -377,7 +362,6 @@ static void test_ivshmem_server(bool msi)
     g_assert_cmpuint(ret, !=, 0);
 
     /* ping vm1 -> vm2 on vector 1 */
-    global_qtest = s2->qs->qts;
     if (msi) {
         ret = qpci_msix_pending(s2->dev, 1);
         g_assert_cmpuint(ret, ==, 0);
diff --git a/tests/libqos/pci-pc.c b/tests/libqos/pci-pc.c
index 585f5289ec..a4fc02b5d8 100644
--- a/tests/libqos/pci-pc.c
+++ b/tests/libqos/pci-pc.c
@@ -29,90 +29,91 @@ typedef struct QPCIBusPC
 
 static uint8_t qpci_pc_pio_readb(QPCIBus *bus, uint32_t addr)
 {
-    return inb(addr);
+    return qtest_inb(bus->qts, addr);
 }
 
 static void qpci_pc_pio_writeb(QPCIBus *bus, uint32_t addr, uint8_t val)
 {
-    outb(addr, val);
+    qtest_outb(bus->qts, addr, val);
 }
 
 static uint16_t qpci_pc_pio_readw(QPCIBus *bus, uint32_t addr)
 {
-    return inw(addr);
+    return qtest_inw(bus->qts, addr);
 }
 
 static void qpci_pc_pio_writew(QPCIBus *bus, uint32_t addr, uint16_t val)
 {
-    outw(addr, val);
+    qtest_outw(bus->qts, addr, val);
 }
 
 static uint32_t qpci_pc_pio_readl(QPCIBus *bus, uint32_t addr)
 {
-    return inl(addr);
+    return qtest_inl(bus->qts, addr);
 }
 
 static void qpci_pc_pio_writel(QPCIBus *bus, uint32_t addr, uint32_t val)
 {
-    outl(addr, val);
+    qtest_outl(bus->qts, addr, val);
 }
 
 static uint64_t qpci_pc_pio_readq(QPCIBus *bus, uint32_t addr)
 {
-    return (uint64_t)inl(addr) + ((uint64_t)inl(addr + 4) << 32);
+    return (uint64_t)qtest_inl(bus->qts, addr) +
+        ((uint64_t)qtest_inl(bus->qts, addr + 4) << 32);
 }
 
 static void qpci_pc_pio_writeq(QPCIBus *bus, uint32_t addr, uint64_t val)
 {
-    outl(addr, val & 0xffffffff);
-    outl(addr + 4, val >> 32);
+    qtest_outl(bus->qts, addr, val & 0xffffffff);
+    qtest_outl(bus->qts, addr + 4, val >> 32);
 }
 
 static void qpci_pc_memread(QPCIBus *bus, uint32_t addr, void *buf, size_t len)
 {
-    memread(addr, buf, len);
+    qtest_memread(bus->qts, addr, buf, len);
 }
 
 static void qpci_pc_memwrite(QPCIBus *bus, uint32_t addr,
                              const void *buf, size_t len)
 {
-    memwrite(addr, buf, len);
+    qtest_memwrite(bus->qts, addr, buf, len);
 }
 
 static uint8_t qpci_pc_config_readb(QPCIBus *bus, int devfn, uint8_t offset)
 {
-    outl(0xcf8, (1U << 31) | (devfn << 8) | offset);
-    return inb(0xcfc);
+    qtest_outl(bus->qts, 0xcf8, (1U << 31) | (devfn << 8) | offset);
+    return qtest_inb(bus->qts, 0xcfc);
 }
 
 static uint16_t qpci_pc_config_readw(QPCIBus *bus, int devfn, uint8_t offset)
 {
-    outl(0xcf8, (1U << 31) | (devfn << 8) | offset);
-    return inw(0xcfc);
+    qtest_outl(bus->qts, 0xcf8, (1U << 31) | (devfn << 8) | offset);
+    return qtest_inw(bus->qts, 0xcfc);
 }
 
 static uint32_t qpci_pc_config_readl(QPCIBus *bus, int devfn, uint8_t offset)
 {
-    outl(0xcf8, (1U << 31) | (devfn << 8) | offset);
-    return inl(0xcfc);
+    qtest_outl(bus->qts, 0xcf8, (1U << 31) | (devfn << 8) | offset);
+    return qtest_inl(bus->qts, 0xcfc);
 }
 
 static void qpci_pc_config_writeb(QPCIBus *bus, int devfn, uint8_t offset, uint8_t value)
 {
-    outl(0xcf8, (1U << 31) | (devfn << 8) | offset);
-    outb(0xcfc, value);
+    qtest_outl(bus->qts, 0xcf8, (1U << 31) | (devfn << 8) | offset);
+    qtest_outb(bus->qts, 0xcfc, value);
 }
 
 static void qpci_pc_config_writew(QPCIBus *bus, int devfn, uint8_t offset, uint16_t value)
 {
-    outl(0xcf8, (1U << 31) | (devfn << 8) | offset);
-    outw(0xcfc, value);
+    qtest_outl(bus->qts, 0xcf8, (1U << 31) | (devfn << 8) | offset);
+    qtest_outw(bus->qts, 0xcfc, value);
 }
 
 static void qpci_pc_config_writel(QPCIBus *bus, int devfn, uint8_t offset, uint32_t value)
 {
-    outl(0xcf8, (1U << 31) | (devfn << 8) | offset);
-    outl(0xcfc, value);
+    qtest_outl(bus->qts, 0xcf8, (1U << 31) | (devfn << 8) | offset);
+    qtest_outl(bus->qts, 0xcfc, value);
 }
 
 QPCIBus *qpci_init_pc(QTestState *qts, QGuestAllocator *alloc)
diff --git a/tests/libqos/pci-spapr.c b/tests/libqos/pci-spapr.c
index c0f7e6db9b..4c29889b0b 100644
--- a/tests/libqos/pci-spapr.c
+++ b/tests/libqos/pci-spapr.c
@@ -45,63 +45,63 @@ typedef struct QPCIBusSPAPR {
 static uint8_t qpci_spapr_pio_readb(QPCIBus *bus, uint32_t addr)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    return readb(s->pio_cpu_base + addr);
+    return qtest_readb(bus->qts, s->pio_cpu_base + addr);
 }
 
 static void qpci_spapr_pio_writeb(QPCIBus *bus, uint32_t addr, uint8_t val)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    writeb(s->pio_cpu_base + addr, val);
+    qtest_writeb(bus->qts, s->pio_cpu_base + addr, val);
 }
 
 static uint16_t qpci_spapr_pio_readw(QPCIBus *bus, uint32_t addr)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    return bswap16(readw(s->pio_cpu_base + addr));
+    return bswap16(qtest_readw(bus->qts, s->pio_cpu_base + addr));
 }
 
 static void qpci_spapr_pio_writew(QPCIBus *bus, uint32_t addr, uint16_t val)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    writew(s->pio_cpu_base + addr, bswap16(val));
+    qtest_writew(bus->qts, s->pio_cpu_base + addr, bswap16(val));
 }
 
 static uint32_t qpci_spapr_pio_readl(QPCIBus *bus, uint32_t addr)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    return bswap32(readl(s->pio_cpu_base + addr));
+    return bswap32(qtest_readl(bus->qts, s->pio_cpu_base + addr));
 }
 
 static void qpci_spapr_pio_writel(QPCIBus *bus, uint32_t addr, uint32_t val)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    writel(s->pio_cpu_base + addr, bswap32(val));
+    qtest_writel(bus->qts, s->pio_cpu_base + addr, bswap32(val));
 }
 
 static uint64_t qpci_spapr_pio_readq(QPCIBus *bus, uint32_t addr)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    return bswap64(readq(s->pio_cpu_base + addr));
+    return bswap64(qtest_readq(bus->qts, s->pio_cpu_base + addr));
 }
 
 static void qpci_spapr_pio_writeq(QPCIBus *bus, uint32_t addr, uint64_t val)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    writeq(s->pio_cpu_base + addr, bswap64(val));
+    qtest_writeq(bus->qts, s->pio_cpu_base + addr, bswap64(val));
 }
 
 static void qpci_spapr_memread(QPCIBus *bus, uint32_t addr,
                                void *buf, size_t len)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    memread(s->mmio32_cpu_base + addr, buf, len);
+    qtest_memread(bus->qts, s->mmio32_cpu_base + addr, buf, len);
 }
 
 static void qpci_spapr_memwrite(QPCIBus *bus, uint32_t addr,
                                 const void *buf, size_t len)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
-    memwrite(s->mmio32_cpu_base + addr, buf, len);
+    qtest_memwrite(bus->qts, s->mmio32_cpu_base + addr, buf, len);
 }
 
 static uint8_t qpci_spapr_config_readb(QPCIBus *bus, int devfn, uint8_t offset)
diff --git a/tests/libqtest.c b/tests/libqtest.c
index 43be078518..1d75d3c936 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -39,10 +39,11 @@ struct QTestState
 {
     int fd;
     int qmp_fd;
-    bool irq_level[MAX_IRQ];
-    GString *rx;
     pid_t qemu_pid;  /* our child QEMU process */
+    int wstatus;
     bool big_endian;
+    bool irq_level[MAX_IRQ];
+    GString *rx;
 };
 
 static GHookList abrt_hooks;
@@ -96,36 +97,52 @@ static int socket_accept(int sock)
     return ret;
 }
 
-static void kill_qemu(QTestState *s)
+bool qtest_probe_child(QTestState *s)
 {
-    if (s->qemu_pid != -1) {
-        int wstatus = 0;
-        pid_t pid;
+    pid_t pid = s->qemu_pid;
 
-        kill(s->qemu_pid, SIGTERM);
-        TFR(pid = waitpid(s->qemu_pid, &wstatus, 0));
+    if (pid != -1) {
+        pid = waitpid(pid, &s->wstatus, WNOHANG);
+        if (pid == 0) {
+            return true;
+        }
+        s->qemu_pid = -1;
+    }
+    return false;
+}
 
+static void kill_qemu(QTestState *s)
+{
+    pid_t pid = s->qemu_pid;
+    int wstatus;
+
+    /* Skip wait if qtest_probe_child already reaped.  */
+    if (pid != -1) {
+        kill(pid, SIGTERM);
+        TFR(pid = waitpid(s->qemu_pid, &s->wstatus, 0));
         assert(pid == s->qemu_pid);
-        /*
-         * We expect qemu to exit with status 0; anything else is
-         * fishy and should be logged with as much detail as possible.
-         */
-        if (wstatus) {
-            if (WIFEXITED(wstatus)) {
-                fprintf(stderr, "%s:%d: kill_qemu() tried to terminate QEMU "
-                        "process but encountered exit status %d\n",
-                        __FILE__, __LINE__, WEXITSTATUS(wstatus));
-            } else if (WIFSIGNALED(wstatus)) {
-                int sig = WTERMSIG(wstatus);
-                const char *signame = strsignal(sig) ?: "unknown ???";
-                const char *dump = WCOREDUMP(wstatus) ? " (core dumped)" : "";
-
-                fprintf(stderr, "%s:%d: kill_qemu() detected QEMU death "
-                        "from signal %d (%s)%s\n",
-                        __FILE__, __LINE__, sig, signame, dump);
-            }
-            abort();
+    }
+
+    /*
+     * We expect qemu to exit with status 0; anything else is
+     * fishy and should be logged with as much detail as possible.
+     */
+    wstatus = s->wstatus;
+    if (wstatus) {
+        if (WIFEXITED(wstatus)) {
+            fprintf(stderr, "%s:%d: kill_qemu() tried to terminate QEMU "
+                    "process but encountered exit status %d\n",
+                    __FILE__, __LINE__, WEXITSTATUS(wstatus));
+        } else if (WIFSIGNALED(wstatus)) {
+            int sig = WTERMSIG(wstatus);
+            const char *signame = strsignal(sig) ?: "unknown ???";
+            const char *dump = WCOREDUMP(wstatus) ? " (core dumped)" : "";
+
+            fprintf(stderr, "%s:%d: kill_qemu() detected QEMU death "
+                    "from signal %d (%s)%s\n",
+                    __FILE__, __LINE__, sig, signame, dump);
         }
+        abort();
     }
 }
 
@@ -228,6 +245,7 @@ QTestState *qtest_init_without_qmp_handshake(const char *extra_args)
 
     g_test_message("starting QEMU: %s", command);
 
+    s->wstatus = 0;
     s->qemu_pid = fork();
     if (s->qemu_pid == 0) {
         setenv("QEMU_AUDIO_DRV", "none", true);
diff --git a/tests/libqtest.h b/tests/libqtest.h
index 96a6c01352..9758c51be6 100644
--- a/tests/libqtest.h
+++ b/tests/libqtest.h
@@ -1011,4 +1011,12 @@ bool qmp_rsp_is_err(QDict *rsp);
  */
 void qmp_assert_error_class(QDict *rsp, const char *class);
 
+/**
+ * qtest_probe_child:
+ * @s: QTestState instance to operate on.
+ *
+ * Returns: true if the child is still alive.
+ */
+bool qtest_probe_child(QTestState *s);
+
 #endif
diff --git a/tests/machine-none-test.c b/tests/machine-none-test.c
index 2b3b750500..4c6d470798 100644
--- a/tests/machine-none-test.c
+++ b/tests/machine-none-test.c
@@ -75,6 +75,7 @@ static void test_machine_cpu_cli(void)
     QDict *response;
     const char *arch = qtest_get_arch();
     const char *cpu_model = get_cpu_model_by_arch(arch);
+    QTestState *qts;
 
     if (!cpu_model) {
         if (!(!strcmp(arch, "microblaze") || !strcmp(arch, "microblazeel"))) {
@@ -83,13 +84,13 @@ static void test_machine_cpu_cli(void)
         }
         return; /* TODO: die here to force all targets have a test */
     }
-    global_qtest = qtest_initf("-machine none -cpu '%s'", cpu_model);
+    qts = qtest_initf("-machine none -cpu '%s'", cpu_model);
 
-    response = qmp("{ 'execute': 'quit' }");
+    response = qtest_qmp(qts, "{ 'execute': 'quit' }");
     g_assert(qdict_haskey(response, "return"));
     qobject_unref(response);
 
-    qtest_quit(global_qtest);
+    qtest_quit(qts);
 }
 
 int main(int argc, char **argv)
diff --git a/tests/prom-env-test.c b/tests/prom-env-test.c
index 198d007f1b..4821254b7e 100644
--- a/tests/prom-env-test.c
+++ b/tests/prom-env-test.c
@@ -25,14 +25,14 @@
 #define MAGIC   0xcafec0de
 #define ADDRESS 0x4000
 
-static void check_guest_memory(void)
+static void check_guest_memory(QTestState *qts)
 {
     uint32_t signature;
     int i;
 
     /* Poll until code has run and modified memory. Wait at most 600 seconds */
     for (i = 0; i < 60000; ++i) {
-        signature = readl(ADDRESS);
+        signature = qtest_readl(qts, ADDRESS);
         if (signature == MAGIC) {
             break;
         }
@@ -45,17 +45,16 @@ static void check_guest_memory(void)
 static void test_machine(const void *machine)
 {
     const char *extra_args;
+    QTestState *qts;
 
     /* The pseries firmware boots much faster without the default devices */
     extra_args = strcmp(machine, "pseries") == 0 ? "-nodefaults" : "";
 
-    global_qtest = qtest_initf("-M %s,accel=tcg %s "
-                               "-prom-env 'use-nvramrc?=true' "
-                               "-prom-env 'nvramrc=%x %x l!' ",
-                               (const char *)machine, extra_args,
-                               MAGIC, ADDRESS);
-    check_guest_memory();
-    qtest_quit(global_qtest);
+    qts = qtest_initf("-M %s,accel=tcg %s -prom-env 'use-nvramrc?=true' "
+                      "-prom-env 'nvramrc=%x %x l!' ", (const char *)machine,
+                      extra_args, MAGIC, ADDRESS);
+    check_guest_memory(qts);
+    qtest_quit(qts);
 }
 
 static void add_tests(const char *machines[])
diff --git a/tests/pvpanic-test.c b/tests/pvpanic-test.c
index 7461a7254f..ff9176adf3 100644
--- a/tests/pvpanic-test.c
+++ b/tests/pvpanic-test.c
@@ -15,13 +15,16 @@ static void test_panic(void)
 {
     uint8_t val;
     QDict *response, *data;
+    QTestState *qts;
 
-    val = inb(0x505);
+    qts = qtest_init("-device pvpanic");
+
+    val = qtest_inb(qts, 0x505);
     g_assert_cmpuint(val, ==, 1);
 
-    outb(0x505, 0x1);
+    qtest_outb(qts, 0x505, 0x1);
 
-    response = qmp_receive();
+    response = qtest_qmp_receive(qts);
     g_assert(qdict_haskey(response, "event"));
     g_assert_cmpstr(qdict_get_str(response, "event"), ==, "GUEST_PANICKED");
     g_assert(qdict_haskey(response, "data"));
@@ -29,6 +32,8 @@ static void test_panic(void)
     g_assert(qdict_haskey(data, "action"));
     g_assert_cmpstr(qdict_get_str(data, "action"), ==, "pause");
     qobject_unref(response);
+
+    qtest_quit(qts);
 }
 
 int main(int argc, char **argv)
@@ -38,10 +43,7 @@ int main(int argc, char **argv)
     g_test_init(&argc, &argv, NULL);
     qtest_add_func("/pvpanic/panic", test_panic);
 
-    qtest_start("-device pvpanic");
     ret = g_test_run();
 
-    qtest_end();
-
     return ret;
 }
diff --git a/tests/pxe-test.c b/tests/pxe-test.c
index 6e3679672c..73ac1d1c61 100644
--- a/tests/pxe-test.c
+++ b/tests/pxe-test.c
@@ -61,6 +61,7 @@ static testdef_t s390x_tests[] = {
 
 static void test_pxe_one(const testdef_t *test, bool ipv6)
 {
+    QTestState *qts;
     char *args;
 
     args = g_strdup_printf(
@@ -70,9 +71,9 @@ static void test_pxe_one(const testdef_t *test, bool ipv6)
         test->machine, disk, ipv6 ? "off" : "on", ipv6 ? "on" : "off",
         test->model);
 
-    qtest_start(args);
-    boot_sector_test(global_qtest);
-    qtest_quit(global_qtest);
+    qts = qtest_init(args);
+    boot_sector_test(qts);
+    qtest_quit(qts);
     g_free(args);
 }
 
diff --git a/tests/test-filter-mirror.c b/tests/test-filter-mirror.c
index d15917e2cf..7ab2aed8a0 100644
--- a/tests/test-filter-mirror.c
+++ b/tests/test-filter-mirror.c
@@ -17,7 +17,7 @@
 #include "qemu/main-loop.h"
 
 /* TODO actually test the results and get rid of this */
-#define qmp_discard_response(...) qobject_unref(qmp(__VA_ARGS__))
+#define qmp_discard_response(qs, ...) qobject_unref(qtest_qmp(qs, __VA_ARGS__))
 
 static void test_mirror(void)
 {
@@ -29,6 +29,7 @@ static void test_mirror(void)
     uint32_t size = sizeof(send_buf);
     size = htonl(size);
     const char *devstr = "e1000";
+    QTestState *qts;
 
     if (g_str_equal(qtest_get_arch(), "s390x")) {
         devstr = "virtio-net-ccw";
@@ -40,7 +41,7 @@ static void test_mirror(void)
     ret = mkstemp(sock_path);
     g_assert_cmpint(ret, !=, -1);
 
-    global_qtest = qtest_initf(
+    qts = qtest_initf(
         "-netdev socket,id=qtest-bn0,fd=%d "
         "-device %s,netdev=qtest-bn0,id=qtest-e0 "
         "-chardev socket,id=mirror0,path=%s,server,nowait "
@@ -61,7 +62,7 @@ static void test_mirror(void)
     };
 
     /* send a qmp command to guarantee that 'connected' is setting to true. */
-    qmp_discard_response("{ 'execute' : 'query-status'}");
+    qmp_discard_response(qts, "{ 'execute' : 'query-status'}");
     ret = iov_send(send_sock[0], iov, 2, 0, sizeof(size) + sizeof(send_buf));
     g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
     close(send_sock[0]);
@@ -78,6 +79,7 @@ static void test_mirror(void)
     g_free(recv_buf);
     close(recv_sock);
     unlink(sock_path);
+    qtest_quit(qts);
 }
 
 int main(int argc, char **argv)
@@ -88,7 +90,6 @@ int main(int argc, char **argv)
 
     qtest_add_func("/netfilter/mirror", test_mirror);
     ret = g_test_run();
-    qtest_end();
 
     return ret;
 }
diff --git a/tests/test-filter-redirector.c b/tests/test-filter-redirector.c
index 615ff5cb9f..9ca9feabf8 100644
--- a/tests/test-filter-redirector.c
+++ b/tests/test-filter-redirector.c
@@ -59,7 +59,7 @@
 #include "qemu/main-loop.h"
 
 /* TODO actually test the results and get rid of this */
-#define qmp_discard_response(...) qobject_unref(qmp(__VA_ARGS__))
+#define qmp_discard_response(qs, ...) qobject_unref(qtest_qmp(qs, __VA_ARGS__))
 
 static const char *get_devstr(void)
 {
@@ -81,6 +81,7 @@ static void test_redirector_tx(void)
     char *recv_buf;
     uint32_t size = sizeof(send_buf);
     size = htonl(size);
+    QTestState *qts;
 
     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
     g_assert_cmpint(ret, !=, -1);
@@ -90,7 +91,7 @@ static void test_redirector_tx(void)
     ret = mkstemp(sock_path1);
     g_assert_cmpint(ret, !=, -1);
 
-    global_qtest = qtest_initf(
+    qts = qtest_initf(
         "-netdev socket,id=qtest-bn0,fd=%d "
         "-device %s,netdev=qtest-bn0,id=qtest-e0 "
         "-chardev socket,id=redirector0,path=%s,server,nowait "
@@ -108,7 +109,7 @@ static void test_redirector_tx(void)
     g_assert_cmpint(recv_sock, !=, -1);
 
     /* send a qmp command to guarantee that 'connected' is setting to true. */
-    qmp_discard_response("{ 'execute' : 'query-status'}");
+    qmp_discard_response(qts, "{ 'execute' : 'query-status'}");
 
     struct iovec iov[] = {
         {
@@ -137,7 +138,7 @@ static void test_redirector_tx(void)
     close(recv_sock);
     unlink(sock_path0);
     unlink(sock_path1);
-    qtest_end();
+    qtest_quit(qts);
 }
 
 static void test_redirector_rx(void)
@@ -150,6 +151,7 @@ static void test_redirector_rx(void)
     char *recv_buf;
     uint32_t size = sizeof(send_buf);
     size = htonl(size);
+    QTestState *qts;
 
     ret = socketpair(PF_UNIX, SOCK_STREAM, 0, backend_sock);
     g_assert_cmpint(ret, !=, -1);
@@ -159,7 +161,7 @@ static void test_redirector_rx(void)
     ret = mkstemp(sock_path1);
     g_assert_cmpint(ret, !=, -1);
 
-    global_qtest = qtest_initf(
+    qts = qtest_initf(
         "-netdev socket,id=qtest-bn0,fd=%d "
         "-device %s,netdev=qtest-bn0,id=qtest-e0 "
         "-chardev socket,id=redirector0,path=%s,server,nowait "
@@ -186,7 +188,7 @@ static void test_redirector_rx(void)
     send_sock = unix_connect(sock_path1, NULL);
     g_assert_cmpint(send_sock, !=, -1);
     /* send a qmp command to guarantee that 'connected' is setting to true. */
-    qmp_discard_response("{ 'execute' : 'query-status'}");
+    qmp_discard_response(qts, "{ 'execute' : 'query-status'}");
 
     ret = iov_send(send_sock, iov, 2, 0, sizeof(size) + sizeof(send_buf));
     g_assert_cmpint(ret, ==, sizeof(send_buf) + sizeof(size));
@@ -204,7 +206,7 @@ static void test_redirector_rx(void)
     g_free(recv_buf);
     unlink(sock_path0);
     unlink(sock_path1);
-    qtest_end();
+    qtest_quit(qts);
 }
 
 int main(int argc, char **argv)
diff --git a/tests/vmgenid-test.c b/tests/vmgenid-test.c
index 0a6fb55f2e..84449ce8ae 100644
--- a/tests/vmgenid-test.c
+++ b/tests/vmgenid-test.c
@@ -31,7 +31,7 @@ typedef struct {
     uint32_t vgia_val;
 } QEMU_PACKED VgidTable;
 
-static uint32_t acpi_find_vgia(void)
+static uint32_t acpi_find_vgia(QTestState *qts)
 {
     uint32_t rsdp_offset;
     uint32_t guid_offset = 0;
@@ -45,18 +45,18 @@ static uint32_t acpi_find_vgia(void)
     int i;
 
     /* Wait for guest firmware to finish and start the payload. */
-    boot_sector_test(global_qtest);
+    boot_sector_test(qts);
 
     /* Tables should be initialized now. */
-    rsdp_offset = acpi_find_rsdp_address();
+    rsdp_offset = acpi_find_rsdp_address(qts);
 
     g_assert_cmphex(rsdp_offset, <, RSDP_ADDR_INVALID);
 
-    acpi_parse_rsdp_table(rsdp_offset, &rsdp_table);
+    acpi_parse_rsdp_table(qts, rsdp_offset, &rsdp_table);
 
     rsdt = le32_to_cpu(rsdp_table.rsdt_physical_address);
     /* read the header */
-    ACPI_READ_TABLE_HEADER(&rsdt_table, rsdt);
+    ACPI_READ_TABLE_HEADER(qts, &rsdt_table, rsdt);
     ACPI_ASSERT_CMP(rsdt_table.signature, "RSDT");
     rsdt_table_length = le32_to_cpu(rsdt_table.length);
 
@@ -67,22 +67,22 @@ static uint32_t acpi_find_vgia(void)
 
     /* get the addresses of the tables pointed by rsdt */
     tables = g_new0(uint32_t, tables_nr);
-    ACPI_READ_ARRAY_PTR(tables, tables_nr, rsdt);
+    ACPI_READ_ARRAY_PTR(qts, tables, tables_nr, rsdt);
 
     for (i = 0; i < tables_nr; i++) {
         uint32_t addr = le32_to_cpu(tables[i]);
-        ACPI_READ_TABLE_HEADER(&ssdt_table, addr);
+        ACPI_READ_TABLE_HEADER(qts, &ssdt_table, addr);
         if (!strncmp((char *)ssdt_table.oem_table_id, "VMGENID", 7)) {
             /* the first entry in the table should be VGIA
              * That's all we need
              */
-            ACPI_READ_FIELD(vgid_table.name_op, addr);
+            ACPI_READ_FIELD(qts, vgid_table.name_op, addr);
             g_assert(vgid_table.name_op == 0x08);  /* name */
-            ACPI_READ_ARRAY(vgid_table.vgia, addr);
+            ACPI_READ_ARRAY(qts, vgid_table.vgia, addr);
             g_assert(memcmp(vgid_table.vgia, "VGIA", 4) == 0);
-            ACPI_READ_FIELD(vgid_table.val_op, addr);
+            ACPI_READ_FIELD(qts, vgid_table.val_op, addr);
             g_assert(vgid_table.val_op == 0x0C);  /* dword */
-            ACPI_READ_FIELD(vgid_table.vgia_val, addr);
+            ACPI_READ_FIELD(qts, vgid_table.vgia_val, addr);
             /* The GUID is written at a fixed offset into the fw_cfg file
              * in order to implement the "OVMF SDT Header probe suppressor"
              * see docs/specs/vmgenid.txt for more details
@@ -95,17 +95,17 @@ static uint32_t acpi_find_vgia(void)
     return guid_offset;
 }
 
-static void read_guid_from_memory(QemuUUID *guid)
+static void read_guid_from_memory(QTestState *qts, QemuUUID *guid)
 {
     uint32_t vmgenid_addr;
     int i;
 
-    vmgenid_addr = acpi_find_vgia();
+    vmgenid_addr = acpi_find_vgia(qts);
     g_assert(vmgenid_addr);
 
     /* Read the GUID directly from guest memory */
     for (i = 0; i < 16; i++) {
-        guid->data[i] = readb(vmgenid_addr + i);
+        guid->data[i] = qtest_readb(qts, vmgenid_addr + i);
     }
     /* The GUID is in little-endian format in the guest, while QEMU
      * uses big-endian.  Swap after reading.
@@ -113,12 +113,12 @@ static void read_guid_from_memory(QemuUUID *guid)
     qemu_uuid_bswap(guid);
 }
 
-static void read_guid_from_monitor(QemuUUID *guid)
+static void read_guid_from_monitor(QTestState *qts, QemuUUID *guid)
 {
     QDict *rsp, *rsp_ret;
     const char *guid_str;
 
-    rsp = qmp("{ 'execute': 'query-vm-generation-id' }");
+    rsp = qtest_qmp(qts, "{ 'execute': 'query-vm-generation-id' }");
     if (qdict_haskey(rsp, "return")) {
         rsp_ret = qdict_get_qdict(rsp, "return");
         g_assert(qdict_haskey(rsp_ret, "guid"));
@@ -139,45 +139,48 @@ static char disk[] = "tests/vmgenid-test-disk-XXXXXX";
 static void vmgenid_set_guid_test(void)
 {
     QemuUUID expected, measured;
+    QTestState *qts;
 
     g_assert(qemu_uuid_parse(VGID_GUID, &expected) == 0);
 
-    global_qtest = qtest_initf(GUID_CMD(VGID_GUID));
+    qts = qtest_initf(GUID_CMD(VGID_GUID));
 
     /* Read the GUID from accessing guest memory */
-    read_guid_from_memory(&measured);
+    read_guid_from_memory(qts, &measured);
     g_assert(memcmp(measured.data, expected.data, sizeof(measured.data)) == 0);
 
-    qtest_quit(global_qtest);
+    qtest_quit(qts);
 }
 
 static void vmgenid_set_guid_auto_test(void)
 {
     QemuUUID measured;
+    QTestState *qts;
 
-    global_qtest = qtest_initf(GUID_CMD("auto"));
+    qts = qtest_initf(GUID_CMD("auto"));
 
-    read_guid_from_memory(&measured);
+    read_guid_from_memory(qts, &measured);
 
     /* Just check that the GUID is non-null */
     g_assert(!qemu_uuid_is_null(&measured));
 
-    qtest_quit(global_qtest);
+    qtest_quit(qts);
 }
 
 static void vmgenid_query_monitor_test(void)
 {
     QemuUUID expected, measured;
+    QTestState *qts;
 
     g_assert(qemu_uuid_parse(VGID_GUID, &expected) == 0);
 
-    global_qtest = qtest_initf(GUID_CMD(VGID_GUID));
+    qts = qtest_initf(GUID_CMD(VGID_GUID));
 
     /* Read the GUID via the monitor */
-    read_guid_from_monitor(&measured);
+    read_guid_from_monitor(qts, &measured);
     g_assert(memcmp(measured.data, expected.data, sizeof(measured.data)) == 0);
 
-    qtest_quit(global_qtest);
+    qtest_quit(qts);
 }
 
 int main(int argc, char **argv)