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8228e353d8
So they are all in one place. The following patch will move serial & parallel declarations to the respective headers. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
538 lines
17 KiB
C
538 lines
17 KiB
C
/*
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* QTest testcase for postcopy
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*
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* Copyright (c) 2016 Red Hat, Inc. and/or its affiliates
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* based on the vhost-user-test.c that is:
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* Copyright (c) 2014 Virtual Open Systems Sarl.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "libqtest.h"
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#include "qemu/option.h"
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#include "qemu/range.h"
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#include "qemu/sockets.h"
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#include "chardev/char.h"
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#include "sysemu/sysemu.h"
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#include "hw/nvram/chrp_nvram.h"
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#define MIN_NVRAM_SIZE 8192 /* from spapr_nvram.c */
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const unsigned start_address = 1024 * 1024;
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const unsigned end_address = 100 * 1024 * 1024;
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bool got_stop;
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#if defined(__linux__)
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#include <sys/syscall.h>
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#include <sys/vfs.h>
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#endif
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#if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD)
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#include <sys/eventfd.h>
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#include <sys/ioctl.h>
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#include <linux/userfaultfd.h>
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static bool ufd_version_check(void)
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{
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struct uffdio_api api_struct;
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uint64_t ioctl_mask;
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int ufd = syscall(__NR_userfaultfd, O_CLOEXEC);
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if (ufd == -1) {
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g_test_message("Skipping test: userfaultfd not available");
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return false;
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}
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api_struct.api = UFFD_API;
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api_struct.features = 0;
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if (ioctl(ufd, UFFDIO_API, &api_struct)) {
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g_test_message("Skipping test: UFFDIO_API failed");
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return false;
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}
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ioctl_mask = (__u64)1 << _UFFDIO_REGISTER |
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(__u64)1 << _UFFDIO_UNREGISTER;
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if ((api_struct.ioctls & ioctl_mask) != ioctl_mask) {
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g_test_message("Skipping test: Missing userfault feature");
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return false;
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}
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return true;
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}
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#else
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static bool ufd_version_check(void)
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{
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g_test_message("Skipping test: Userfault not available (builtdtime)");
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return false;
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}
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#endif
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static const char *tmpfs;
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/* A simple PC boot sector that modifies memory (1-100MB) quickly
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* outputing a 'B' every so often if it's still running.
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*/
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unsigned char bootsect[] = {
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0xfa, 0x0f, 0x01, 0x16, 0x74, 0x7c, 0x66, 0xb8, 0x01, 0x00, 0x00, 0x00,
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0x0f, 0x22, 0xc0, 0x66, 0xea, 0x20, 0x7c, 0x00, 0x00, 0x08, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe4, 0x92, 0x0c, 0x02,
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0xe6, 0x92, 0xb8, 0x10, 0x00, 0x00, 0x00, 0x8e, 0xd8, 0x66, 0xb8, 0x41,
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0x00, 0x66, 0xba, 0xf8, 0x03, 0xee, 0xb3, 0x00, 0xb8, 0x00, 0x00, 0x10,
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0x00, 0xfe, 0x00, 0x05, 0x00, 0x10, 0x00, 0x00, 0x3d, 0x00, 0x00, 0x40,
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0x06, 0x7c, 0xf2, 0xfe, 0xc3, 0x75, 0xe9, 0x66, 0xb8, 0x42, 0x00, 0x66,
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0xba, 0xf8, 0x03, 0xee, 0xeb, 0xde, 0x66, 0x90, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x9a, 0xcf, 0x00,
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0xff, 0xff, 0x00, 0x00, 0x00, 0x92, 0xcf, 0x00, 0x27, 0x00, 0x5c, 0x7c,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa
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};
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static void init_bootfile_x86(const char *bootpath)
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{
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FILE *bootfile = fopen(bootpath, "wb");
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g_assert_cmpint(fwrite(bootsect, 512, 1, bootfile), ==, 1);
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fclose(bootfile);
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}
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static void init_bootfile_ppc(const char *bootpath)
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{
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FILE *bootfile;
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char buf[MIN_NVRAM_SIZE];
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ChrpNvramPartHdr *header = (ChrpNvramPartHdr *)buf;
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memset(buf, 0, MIN_NVRAM_SIZE);
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/* Create a "common" partition in nvram to store boot-command property */
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header->signature = CHRP_NVPART_SYSTEM;
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memcpy(header->name, "common", 6);
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chrp_nvram_finish_partition(header, MIN_NVRAM_SIZE);
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/* FW_MAX_SIZE is 4MB, but slof.bin is only 900KB,
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* so let's modify memory between 1MB and 100MB
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* to do like PC bootsector
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*/
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sprintf(buf + 16,
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"boot-command=hex .\" _\" begin %x %x do i c@ 1 + i c! 1000 +loop "
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".\" B\" 0 until", end_address, start_address);
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/* Write partition to the NVRAM file */
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bootfile = fopen(bootpath, "wb");
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g_assert_cmpint(fwrite(buf, MIN_NVRAM_SIZE, 1, bootfile), ==, 1);
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fclose(bootfile);
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}
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/*
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* Wait for some output in the serial output file,
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* we get an 'A' followed by an endless string of 'B's
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* but on the destination we won't have the A.
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*/
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static void wait_for_serial(const char *side)
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{
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char *serialpath = g_strdup_printf("%s/%s", tmpfs, side);
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FILE *serialfile = fopen(serialpath, "r");
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const char *arch = qtest_get_arch();
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int started = (strcmp(side, "src_serial") == 0 &&
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strcmp(arch, "ppc64") == 0) ? 0 : 1;
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g_free(serialpath);
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do {
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int readvalue = fgetc(serialfile);
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if (!started) {
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/* SLOF prints its banner before starting test,
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* to ignore it, mark the start of the test with '_',
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* ignore all characters until this marker
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*/
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switch (readvalue) {
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case '_':
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started = 1;
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break;
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case EOF:
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fseek(serialfile, 0, SEEK_SET);
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usleep(1000);
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break;
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}
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continue;
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}
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switch (readvalue) {
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case 'A':
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/* Fine */
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break;
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case 'B':
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/* It's alive! */
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fclose(serialfile);
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return;
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case EOF:
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started = (strcmp(side, "src_serial") == 0 &&
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strcmp(arch, "ppc64") == 0) ? 0 : 1;
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fseek(serialfile, 0, SEEK_SET);
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usleep(1000);
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break;
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default:
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fprintf(stderr, "Unexpected %d on %s serial\n", readvalue, side);
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g_assert_not_reached();
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}
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} while (true);
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}
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/*
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* Events can get in the way of responses we are actually waiting for.
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*/
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static QDict *return_or_event(QDict *response)
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{
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const char *event_string;
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if (!qdict_haskey(response, "event")) {
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return response;
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}
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/* OK, it was an event */
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event_string = qdict_get_str(response, "event");
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if (!strcmp(event_string, "STOP")) {
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got_stop = true;
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}
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QDECREF(response);
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return return_or_event(qtest_qmp_receive(global_qtest));
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}
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/*
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* It's tricky to use qemu's migration event capability with qtest,
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* events suddenly appearing confuse the qmp()/hmp() responses.
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* so wait for a couple of passes to have happened before
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* going postcopy.
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*/
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static uint64_t get_migration_pass(void)
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{
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QDict *rsp, *rsp_return, *rsp_ram;
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uint64_t result;
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rsp = return_or_event(qmp("{ 'execute': 'query-migrate' }"));
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rsp_return = qdict_get_qdict(rsp, "return");
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if (!qdict_haskey(rsp_return, "ram")) {
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/* Still in setup */
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result = 0;
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} else {
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rsp_ram = qdict_get_qdict(rsp_return, "ram");
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result = qdict_get_try_int(rsp_ram, "dirty-sync-count", 0);
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}
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QDECREF(rsp);
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return result;
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}
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static void wait_for_migration_complete(void)
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{
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QDict *rsp, *rsp_return;
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bool completed;
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do {
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const char *status;
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rsp = return_or_event(qmp("{ 'execute': 'query-migrate' }"));
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rsp_return = qdict_get_qdict(rsp, "return");
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status = qdict_get_str(rsp_return, "status");
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completed = strcmp(status, "completed") == 0;
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g_assert_cmpstr(status, !=, "failed");
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QDECREF(rsp);
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usleep(1000 * 100);
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} while (!completed);
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}
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static void wait_for_migration_pass(void)
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{
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uint64_t initial_pass = get_migration_pass();
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uint64_t pass;
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/* Wait for the 1st sync */
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do {
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initial_pass = get_migration_pass();
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if (got_stop || initial_pass) {
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break;
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}
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usleep(1000 * 100);
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} while (true);
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do {
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usleep(1000 * 100);
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pass = get_migration_pass();
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} while (pass == initial_pass && !got_stop);
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}
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static void check_guests_ram(void)
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{
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/* Our ASM test will have been incrementing one byte from each page from
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* 1MB to <100MB in order.
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* This gives us a constraint that any page's byte should be equal or less
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* than the previous pages byte (mod 256); and they should all be equal
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* except for one transition at the point where we meet the incrementer.
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* (We're running this with the guest stopped).
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*/
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unsigned address;
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uint8_t first_byte;
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uint8_t last_byte;
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bool hit_edge = false;
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bool bad = false;
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qtest_memread(global_qtest, start_address, &first_byte, 1);
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last_byte = first_byte;
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for (address = start_address + 4096; address < end_address; address += 4096)
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{
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uint8_t b;
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qtest_memread(global_qtest, address, &b, 1);
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if (b != last_byte) {
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if (((b + 1) % 256) == last_byte && !hit_edge) {
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/* This is OK, the guest stopped at the point of
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* incrementing the previous page but didn't get
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* to us yet.
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*/
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hit_edge = true;
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} else {
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fprintf(stderr, "Memory content inconsistency at %x"
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" first_byte = %x last_byte = %x current = %x"
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" hit_edge = %x\n",
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address, first_byte, last_byte, b, hit_edge);
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bad = true;
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}
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}
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last_byte = b;
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}
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g_assert_false(bad);
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}
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static void cleanup(const char *filename)
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{
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char *path = g_strdup_printf("%s/%s", tmpfs, filename);
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unlink(path);
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g_free(path);
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}
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static void test_migrate(void)
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{
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char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs);
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QTestState *global = global_qtest, *from, *to;
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unsigned char dest_byte_a, dest_byte_b, dest_byte_c, dest_byte_d;
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gchar *cmd, *cmd_src, *cmd_dst;
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QDict *rsp;
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char *bootpath = g_strdup_printf("%s/bootsect", tmpfs);
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const char *arch = qtest_get_arch();
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got_stop = false;
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if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
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init_bootfile_x86(bootpath);
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cmd_src = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
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" -name pcsource,debug-threads=on"
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" -serial file:%s/src_serial"
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" -drive file=%s,format=raw",
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tmpfs, bootpath);
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cmd_dst = g_strdup_printf("-machine accel=kvm:tcg -m 150M"
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" -name pcdest,debug-threads=on"
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" -serial file:%s/dest_serial"
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" -drive file=%s,format=raw"
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" -incoming %s",
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tmpfs, bootpath, uri);
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} else if (strcmp(arch, "ppc64") == 0) {
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const char *accel;
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/* On ppc64, the test only works with kvm-hv, but not with kvm-pr */
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accel = access("/sys/module/kvm_hv", F_OK) ? "tcg" : "kvm:tcg";
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init_bootfile_ppc(bootpath);
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cmd_src = g_strdup_printf("-machine accel=%s -m 256M"
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" -name pcsource,debug-threads=on"
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" -serial file:%s/src_serial"
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" -drive file=%s,if=pflash,format=raw",
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accel, tmpfs, bootpath);
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cmd_dst = g_strdup_printf("-machine accel=%s -m 256M"
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" -name pcdest,debug-threads=on"
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" -serial file:%s/dest_serial"
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" -incoming %s",
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accel, tmpfs, uri);
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} else {
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g_assert_not_reached();
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}
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g_free(bootpath);
|
|
|
|
from = qtest_start(cmd_src);
|
|
g_free(cmd_src);
|
|
|
|
to = qtest_init(cmd_dst);
|
|
g_free(cmd_dst);
|
|
|
|
global_qtest = from;
|
|
rsp = qmp("{ 'execute': 'migrate-set-capabilities',"
|
|
"'arguments': { "
|
|
"'capabilities': [ {"
|
|
"'capability': 'postcopy-ram',"
|
|
"'state': true } ] } }");
|
|
g_assert(qdict_haskey(rsp, "return"));
|
|
QDECREF(rsp);
|
|
|
|
global_qtest = to;
|
|
rsp = qmp("{ 'execute': 'migrate-set-capabilities',"
|
|
"'arguments': { "
|
|
"'capabilities': [ {"
|
|
"'capability': 'postcopy-ram',"
|
|
"'state': true } ] } }");
|
|
g_assert(qdict_haskey(rsp, "return"));
|
|
QDECREF(rsp);
|
|
|
|
/* We want to pick a speed slow enough that the test completes
|
|
* quickly, but that it doesn't complete precopy even on a slow
|
|
* machine, so also set the downtime.
|
|
*/
|
|
global_qtest = from;
|
|
rsp = qmp("{ 'execute': 'migrate_set_speed',"
|
|
"'arguments': { 'value': 100000000 } }");
|
|
g_assert(qdict_haskey(rsp, "return"));
|
|
QDECREF(rsp);
|
|
|
|
/* 1ms downtime - it should never finish precopy */
|
|
rsp = qmp("{ 'execute': 'migrate_set_downtime',"
|
|
"'arguments': { 'value': 0.001 } }");
|
|
g_assert(qdict_haskey(rsp, "return"));
|
|
QDECREF(rsp);
|
|
|
|
|
|
/* Wait for the first serial output from the source */
|
|
wait_for_serial("src_serial");
|
|
|
|
cmd = g_strdup_printf("{ 'execute': 'migrate',"
|
|
"'arguments': { 'uri': '%s' } }",
|
|
uri);
|
|
rsp = qmp(cmd);
|
|
g_free(cmd);
|
|
g_assert(qdict_haskey(rsp, "return"));
|
|
QDECREF(rsp);
|
|
|
|
wait_for_migration_pass();
|
|
|
|
rsp = return_or_event(qmp("{ 'execute': 'migrate-start-postcopy' }"));
|
|
g_assert(qdict_haskey(rsp, "return"));
|
|
QDECREF(rsp);
|
|
|
|
if (!got_stop) {
|
|
qmp_eventwait("STOP");
|
|
}
|
|
|
|
global_qtest = to;
|
|
qmp_eventwait("RESUME");
|
|
|
|
wait_for_serial("dest_serial");
|
|
global_qtest = from;
|
|
wait_for_migration_complete();
|
|
|
|
qtest_quit(from);
|
|
|
|
global_qtest = to;
|
|
|
|
qtest_memread(to, start_address, &dest_byte_a, 1);
|
|
|
|
/* Destination still running, wait for a byte to change */
|
|
do {
|
|
qtest_memread(to, start_address, &dest_byte_b, 1);
|
|
usleep(10 * 1000);
|
|
} while (dest_byte_a == dest_byte_b);
|
|
|
|
qmp_discard_response("{ 'execute' : 'stop'}");
|
|
/* With it stopped, check nothing changes */
|
|
qtest_memread(to, start_address, &dest_byte_c, 1);
|
|
sleep(1);
|
|
qtest_memread(to, start_address, &dest_byte_d, 1);
|
|
g_assert_cmpint(dest_byte_c, ==, dest_byte_d);
|
|
|
|
check_guests_ram();
|
|
|
|
qtest_quit(to);
|
|
g_free(uri);
|
|
|
|
global_qtest = global;
|
|
|
|
cleanup("bootsect");
|
|
cleanup("migsocket");
|
|
cleanup("src_serial");
|
|
cleanup("dest_serial");
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
char template[] = "/tmp/postcopy-test-XXXXXX";
|
|
int ret;
|
|
|
|
g_test_init(&argc, &argv, NULL);
|
|
|
|
if (!ufd_version_check()) {
|
|
return 0;
|
|
}
|
|
|
|
tmpfs = mkdtemp(template);
|
|
if (!tmpfs) {
|
|
g_test_message("mkdtemp on path (%s): %s\n", template, strerror(errno));
|
|
}
|
|
g_assert(tmpfs);
|
|
|
|
module_call_init(MODULE_INIT_QOM);
|
|
|
|
qtest_add_func("/postcopy", test_migrate);
|
|
|
|
ret = g_test_run();
|
|
|
|
g_assert_cmpint(ret, ==, 0);
|
|
|
|
ret = rmdir(tmpfs);
|
|
if (ret != 0) {
|
|
g_test_message("unable to rmdir: path (%s): %s\n",
|
|
tmpfs, strerror(errno));
|
|
}
|
|
|
|
return ret;
|
|
}
|