mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-06 18:05:37 +00:00
tests: Add unit tests for the VM Generation ID feature
The following tests are implemented: * test that a GUID passed in by command line is propagated to the guest. Read the GUID from guest memory * test that the "auto" argument to the GUID generates a valid GUID, as seen by the guest. * test that a GUID passed in can be queried from the monitor This patch is loosely based on a previous patch from: Gal Hammer <ghammer@redhat.com> and Igor Mammedov <imammedo@redhat.com> Signed-off-by: Ben Warren <ben@skyportsystems.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
parent
b9ec9bd468
commit
83f3c70919
|
@ -250,6 +250,7 @@ check-qtest-i386-y += tests/usb-hcd-xhci-test$(EXESUF)
|
|||
gcov-files-i386-y += hw/usb/hcd-xhci.c
|
||||
check-qtest-i386-y += tests/pc-cpu-test$(EXESUF)
|
||||
check-qtest-i386-y += tests/q35-test$(EXESUF)
|
||||
check-qtest-i386-y += tests/vmgenid-test$(EXESUF)
|
||||
gcov-files-i386-y += hw/pci-host/q35.c
|
||||
check-qtest-i386-$(CONFIG_VHOST_NET_TEST_i386) += tests/vhost-user-test$(EXESUF)
|
||||
ifeq ($(CONFIG_VHOST_NET_TEST_i386),)
|
||||
|
@ -760,6 +761,7 @@ tests/test-uuid$(EXESUF): tests/test-uuid.o $(test-util-obj-y)
|
|||
tests/test-arm-mptimer$(EXESUF): tests/test-arm-mptimer.o
|
||||
tests/test-qapi-util$(EXESUF): tests/test-qapi-util.o $(test-util-obj-y)
|
||||
tests/numa-test$(EXESUF): tests/numa-test.o
|
||||
tests/vmgenid-test$(EXESUF): tests/vmgenid-test.o tests/acpi-utils.o
|
||||
|
||||
tests/migration/stress$(EXESUF): tests/migration/stress.o
|
||||
$(call quiet-command, $(LINKPROG) -static -O3 $(PTHREAD_LIB) -o $@ $< ,"LINK","$(TARGET_DIR)$@")
|
||||
|
|
203
tests/vmgenid-test.c
Normal file
203
tests/vmgenid-test.c
Normal file
|
@ -0,0 +1,203 @@
|
|||
/*
|
||||
* QTest testcase for VM Generation ID
|
||||
*
|
||||
* Copyright (c) 2016 Red Hat, Inc.
|
||||
* Copyright (c) 2017 Skyport Systems
|
||||
*
|
||||
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
||||
* See the COPYING file in the top-level directory.
|
||||
*/
|
||||
|
||||
#include <glib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include "qemu/osdep.h"
|
||||
#include "qemu/bitmap.h"
|
||||
#include "qemu/uuid.h"
|
||||
#include "hw/acpi/acpi-defs.h"
|
||||
#include "acpi-utils.h"
|
||||
#include "libqtest.h"
|
||||
|
||||
#define VGID_GUID "324e6eaf-d1d1-4bf6-bf41-b9bb6c91fb87"
|
||||
#define VMGENID_GUID_OFFSET 40 /* allow space for
|
||||
* OVMF SDT Header Probe Supressor
|
||||
*/
|
||||
#define RSDP_ADDR_INVALID 0x100000 /* RSDP must be below this address */
|
||||
#define RSDP_SLEEP_US 100000 /* Sleep for 100ms between tries */
|
||||
#define RSDP_TRIES_MAX 100 /* Max total time is 10 seconds */
|
||||
|
||||
typedef struct {
|
||||
AcpiTableHeader header;
|
||||
gchar name_op;
|
||||
gchar vgia[4];
|
||||
gchar val_op;
|
||||
uint32_t vgia_val;
|
||||
} QEMU_PACKED VgidTable;
|
||||
|
||||
static uint32_t acpi_find_vgia(void)
|
||||
{
|
||||
uint32_t rsdp_offset;
|
||||
uint32_t guid_offset = 0;
|
||||
AcpiRsdpDescriptor rsdp_table;
|
||||
uint32_t rsdt;
|
||||
AcpiRsdtDescriptorRev1 rsdt_table;
|
||||
int tables_nr;
|
||||
uint32_t *tables;
|
||||
AcpiTableHeader ssdt_table;
|
||||
VgidTable vgid_table;
|
||||
int i;
|
||||
|
||||
/* Tables may take a short time to be set up by the guest */
|
||||
for (i = 0; i < RSDP_TRIES_MAX; i++) {
|
||||
rsdp_offset = acpi_find_rsdp_address();
|
||||
if (rsdp_offset < RSDP_ADDR_INVALID) {
|
||||
break;
|
||||
}
|
||||
g_usleep(RSDP_SLEEP_US);
|
||||
}
|
||||
g_assert_cmphex(rsdp_offset, <, RSDP_ADDR_INVALID);
|
||||
|
||||
acpi_parse_rsdp_table(rsdp_offset, &rsdp_table);
|
||||
|
||||
rsdt = rsdp_table.rsdt_physical_address;
|
||||
/* read the header */
|
||||
ACPI_READ_TABLE_HEADER(&rsdt_table, rsdt);
|
||||
ACPI_ASSERT_CMP(rsdt_table.signature, "RSDT");
|
||||
|
||||
/* compute the table entries in rsdt */
|
||||
tables_nr = (rsdt_table.length - sizeof(AcpiRsdtDescriptorRev1)) /
|
||||
sizeof(uint32_t);
|
||||
g_assert_cmpint(tables_nr, >, 0);
|
||||
|
||||
/* get the addresses of the tables pointed by rsdt */
|
||||
tables = g_new0(uint32_t, tables_nr);
|
||||
ACPI_READ_ARRAY_PTR(tables, tables_nr, rsdt);
|
||||
|
||||
for (i = 0; i < tables_nr; i++) {
|
||||
ACPI_READ_TABLE_HEADER(&ssdt_table, tables[i]);
|
||||
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, tables[i]);
|
||||
g_assert(vgid_table.name_op == 0x08); /* name */
|
||||
ACPI_READ_ARRAY(vgid_table.vgia, tables[i]);
|
||||
g_assert(memcmp(vgid_table.vgia, "VGIA", 4) == 0);
|
||||
ACPI_READ_FIELD(vgid_table.val_op, tables[i]);
|
||||
g_assert(vgid_table.val_op == 0x0C); /* dword */
|
||||
ACPI_READ_FIELD(vgid_table.vgia_val, tables[i]);
|
||||
/* 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
|
||||
*/
|
||||
guid_offset = vgid_table.vgia_val + VMGENID_GUID_OFFSET;
|
||||
break;
|
||||
}
|
||||
}
|
||||
g_free(tables);
|
||||
return guid_offset;
|
||||
}
|
||||
|
||||
static void read_guid_from_memory(QemuUUID *guid)
|
||||
{
|
||||
uint32_t vmgenid_addr;
|
||||
int i;
|
||||
|
||||
vmgenid_addr = acpi_find_vgia();
|
||||
g_assert(vmgenid_addr);
|
||||
|
||||
/* Read the GUID directly from guest memory */
|
||||
for (i = 0; i < 16; i++) {
|
||||
guid->data[i] = readb(vmgenid_addr + i);
|
||||
}
|
||||
/* The GUID is in little-endian format in the guest, while QEMU
|
||||
* uses big-endian. Swap after reading.
|
||||
*/
|
||||
qemu_uuid_bswap(guid);
|
||||
}
|
||||
|
||||
static void read_guid_from_monitor(QemuUUID *guid)
|
||||
{
|
||||
QDict *rsp, *rsp_ret;
|
||||
const char *guid_str;
|
||||
|
||||
rsp = qmp("{ 'execute': 'query-vm-generation-id' }");
|
||||
if (qdict_haskey(rsp, "return")) {
|
||||
rsp_ret = qdict_get_qdict(rsp, "return");
|
||||
g_assert(qdict_haskey(rsp_ret, "guid"));
|
||||
guid_str = qdict_get_str(rsp_ret, "guid");
|
||||
g_assert(qemu_uuid_parse(guid_str, guid) == 0);
|
||||
}
|
||||
QDECREF(rsp);
|
||||
}
|
||||
|
||||
static void vmgenid_set_guid_test(void)
|
||||
{
|
||||
QemuUUID expected, measured;
|
||||
gchar *cmd;
|
||||
|
||||
g_assert(qemu_uuid_parse(VGID_GUID, &expected) == 0);
|
||||
|
||||
cmd = g_strdup_printf("-machine accel=tcg -device vmgenid,id=testvgid,"
|
||||
"guid=%s", VGID_GUID);
|
||||
qtest_start(cmd);
|
||||
|
||||
/* Read the GUID from accessing guest memory */
|
||||
read_guid_from_memory(&measured);
|
||||
g_assert(memcmp(measured.data, expected.data, sizeof(measured.data)) == 0);
|
||||
|
||||
qtest_quit(global_qtest);
|
||||
g_free(cmd);
|
||||
}
|
||||
|
||||
static void vmgenid_set_guid_auto_test(void)
|
||||
{
|
||||
const char *cmd;
|
||||
QemuUUID measured;
|
||||
|
||||
cmd = "-machine accel=tcg -device vmgenid,id=testvgid," "guid=auto";
|
||||
qtest_start(cmd);
|
||||
|
||||
read_guid_from_memory(&measured);
|
||||
|
||||
/* Just check that the GUID is non-null */
|
||||
g_assert(!qemu_uuid_is_null(&measured));
|
||||
|
||||
qtest_quit(global_qtest);
|
||||
}
|
||||
|
||||
static void vmgenid_query_monitor_test(void)
|
||||
{
|
||||
QemuUUID expected, measured;
|
||||
gchar *cmd;
|
||||
|
||||
g_assert(qemu_uuid_parse(VGID_GUID, &expected) == 0);
|
||||
|
||||
cmd = g_strdup_printf("-machine accel=tcg -device vmgenid,id=testvgid,"
|
||||
"guid=%s", VGID_GUID);
|
||||
qtest_start(cmd);
|
||||
|
||||
/* Read the GUID via the monitor */
|
||||
read_guid_from_monitor(&measured);
|
||||
g_assert(memcmp(measured.data, expected.data, sizeof(measured.data)) == 0);
|
||||
|
||||
qtest_quit(global_qtest);
|
||||
g_free(cmd);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int ret;
|
||||
|
||||
g_test_init(&argc, &argv, NULL);
|
||||
|
||||
qtest_add_func("/vmgenid/vmgenid/set-guid",
|
||||
vmgenid_set_guid_test);
|
||||
qtest_add_func("/vmgenid/vmgenid/set-guid-auto",
|
||||
vmgenid_set_guid_auto_test);
|
||||
qtest_add_func("/vmgenid/vmgenid/query-monitor",
|
||||
vmgenid_query_monitor_test);
|
||||
ret = g_test_run();
|
||||
|
||||
return ret;
|
||||
}
|
Loading…
Reference in a new issue