1175 lines
29 KiB
C
1175 lines
29 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#ifndef _WIN32
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#include <sys/types.h>
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#include <sys/mman.h>
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#endif
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#include "config.h"
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#include "monitor.h"
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#include "sysemu.h"
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#include "bitops.h"
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#include "bitmap.h"
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#include "arch_init.h"
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#include "audio/audio.h"
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#include "hw/pc.h"
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#include "hw/pci.h"
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#include "hw/audiodev.h"
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#include "kvm.h"
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#include "migration.h"
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#include "net.h"
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#include "gdbstub.h"
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#include "hw/smbios.h"
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#include "exec-memory.h"
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#include "hw/pcspk.h"
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#include "qemu/page_cache.h"
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#include "qmp-commands.h"
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#include "trace.h"
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#ifdef DEBUG_ARCH_INIT
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#define DPRINTF(fmt, ...) \
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do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0)
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#else
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#define DPRINTF(fmt, ...) \
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do { } while (0)
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#endif
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#ifdef TARGET_SPARC
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int graphic_width = 1024;
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int graphic_height = 768;
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int graphic_depth = 8;
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#else
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int graphic_width = 800;
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int graphic_height = 600;
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int graphic_depth = 15;
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#endif
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#if defined(TARGET_ALPHA)
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#define QEMU_ARCH QEMU_ARCH_ALPHA
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#elif defined(TARGET_ARM)
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#define QEMU_ARCH QEMU_ARCH_ARM
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#elif defined(TARGET_CRIS)
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#define QEMU_ARCH QEMU_ARCH_CRIS
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#elif defined(TARGET_I386)
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#define QEMU_ARCH QEMU_ARCH_I386
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#elif defined(TARGET_M68K)
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#define QEMU_ARCH QEMU_ARCH_M68K
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#elif defined(TARGET_LM32)
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#define QEMU_ARCH QEMU_ARCH_LM32
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#elif defined(TARGET_MICROBLAZE)
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#define QEMU_ARCH QEMU_ARCH_MICROBLAZE
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#elif defined(TARGET_MIPS)
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#define QEMU_ARCH QEMU_ARCH_MIPS
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#elif defined(TARGET_OPENRISC)
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#define QEMU_ARCH QEMU_ARCH_OPENRISC
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#elif defined(TARGET_PPC)
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#define QEMU_ARCH QEMU_ARCH_PPC
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#elif defined(TARGET_S390X)
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#define QEMU_ARCH QEMU_ARCH_S390X
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#elif defined(TARGET_SH4)
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#define QEMU_ARCH QEMU_ARCH_SH4
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#elif defined(TARGET_SPARC)
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#define QEMU_ARCH QEMU_ARCH_SPARC
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#elif defined(TARGET_XTENSA)
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#define QEMU_ARCH QEMU_ARCH_XTENSA
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#elif defined(TARGET_UNICORE32)
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#define QEMU_ARCH QEMU_ARCH_UNICORE32
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#endif
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const uint32_t arch_type = QEMU_ARCH;
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/***********************************************************/
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/* ram save/restore */
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#define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
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#define RAM_SAVE_FLAG_COMPRESS 0x02
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#define RAM_SAVE_FLAG_MEM_SIZE 0x04
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#define RAM_SAVE_FLAG_PAGE 0x08
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#define RAM_SAVE_FLAG_EOS 0x10
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#define RAM_SAVE_FLAG_CONTINUE 0x20
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#define RAM_SAVE_FLAG_XBZRLE 0x40
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#ifdef __ALTIVEC__
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#include <altivec.h>
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#define VECTYPE vector unsigned char
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#define SPLAT(p) vec_splat(vec_ld(0, p), 0)
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#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
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/* altivec.h may redefine the bool macro as vector type.
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* Reset it to POSIX semantics. */
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#undef bool
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#define bool _Bool
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#elif defined __SSE2__
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#include <emmintrin.h>
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#define VECTYPE __m128i
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#define SPLAT(p) _mm_set1_epi8(*(p))
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#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
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#else
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#define VECTYPE unsigned long
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#define SPLAT(p) (*(p) * (~0UL / 255))
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#define ALL_EQ(v1, v2) ((v1) == (v2))
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#endif
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static struct defconfig_file {
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const char *filename;
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/* Indicates it is an user config file (disabled by -no-user-config) */
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bool userconfig;
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} default_config_files[] = {
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{ CONFIG_QEMU_CONFDIR "/qemu.conf", true },
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{ CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true },
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{ NULL }, /* end of list */
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};
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int qemu_read_default_config_files(bool userconfig)
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{
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int ret;
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struct defconfig_file *f;
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for (f = default_config_files; f->filename; f++) {
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if (!userconfig && f->userconfig) {
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continue;
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}
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ret = qemu_read_config_file(f->filename);
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if (ret < 0 && ret != -ENOENT) {
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return ret;
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}
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}
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return 0;
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}
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static int is_dup_page(uint8_t *page)
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{
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VECTYPE *p = (VECTYPE *)page;
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VECTYPE val = SPLAT(page);
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int i;
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for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
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if (!ALL_EQ(val, p[i])) {
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return 0;
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}
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}
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return 1;
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}
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/* struct contains XBZRLE cache and a static page
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used by the compression */
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static struct {
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/* buffer used for XBZRLE encoding */
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uint8_t *encoded_buf;
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/* buffer for storing page content */
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uint8_t *current_buf;
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/* buffer used for XBZRLE decoding */
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uint8_t *decoded_buf;
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/* Cache for XBZRLE */
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PageCache *cache;
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} XBZRLE = {
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.encoded_buf = NULL,
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.current_buf = NULL,
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.decoded_buf = NULL,
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.cache = NULL,
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};
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int64_t xbzrle_cache_resize(int64_t new_size)
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{
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if (XBZRLE.cache != NULL) {
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return cache_resize(XBZRLE.cache, new_size / TARGET_PAGE_SIZE) *
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TARGET_PAGE_SIZE;
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}
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return pow2floor(new_size);
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}
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/* accounting for migration statistics */
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typedef struct AccountingInfo {
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uint64_t dup_pages;
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uint64_t norm_pages;
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uint64_t iterations;
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uint64_t xbzrle_bytes;
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uint64_t xbzrle_pages;
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uint64_t xbzrle_cache_miss;
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uint64_t xbzrle_overflows;
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} AccountingInfo;
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static AccountingInfo acct_info;
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static void acct_clear(void)
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{
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memset(&acct_info, 0, sizeof(acct_info));
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}
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uint64_t dup_mig_bytes_transferred(void)
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{
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return acct_info.dup_pages * TARGET_PAGE_SIZE;
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}
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uint64_t dup_mig_pages_transferred(void)
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{
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return acct_info.dup_pages;
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}
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uint64_t norm_mig_bytes_transferred(void)
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{
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return acct_info.norm_pages * TARGET_PAGE_SIZE;
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}
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uint64_t norm_mig_pages_transferred(void)
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{
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return acct_info.norm_pages;
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}
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uint64_t xbzrle_mig_bytes_transferred(void)
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{
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return acct_info.xbzrle_bytes;
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}
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uint64_t xbzrle_mig_pages_transferred(void)
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{
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return acct_info.xbzrle_pages;
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}
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uint64_t xbzrle_mig_pages_cache_miss(void)
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{
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return acct_info.xbzrle_cache_miss;
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}
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uint64_t xbzrle_mig_pages_overflow(void)
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{
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return acct_info.xbzrle_overflows;
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}
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static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
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int cont, int flag)
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{
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qemu_put_be64(f, offset | cont | flag);
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if (!cont) {
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qemu_put_byte(f, strlen(block->idstr));
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qemu_put_buffer(f, (uint8_t *)block->idstr,
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strlen(block->idstr));
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}
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}
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#define ENCODING_FLAG_XBZRLE 0x1
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static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
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ram_addr_t current_addr, RAMBlock *block,
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ram_addr_t offset, int cont, bool last_stage)
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{
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int encoded_len = 0, bytes_sent = -1;
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uint8_t *prev_cached_page;
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if (!cache_is_cached(XBZRLE.cache, current_addr)) {
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if (!last_stage) {
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cache_insert(XBZRLE.cache, current_addr,
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g_memdup(current_data, TARGET_PAGE_SIZE));
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}
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acct_info.xbzrle_cache_miss++;
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return -1;
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}
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prev_cached_page = get_cached_data(XBZRLE.cache, current_addr);
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/* save current buffer into memory */
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memcpy(XBZRLE.current_buf, current_data, TARGET_PAGE_SIZE);
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/* XBZRLE encoding (if there is no overflow) */
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encoded_len = xbzrle_encode_buffer(prev_cached_page, XBZRLE.current_buf,
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TARGET_PAGE_SIZE, XBZRLE.encoded_buf,
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TARGET_PAGE_SIZE);
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if (encoded_len == 0) {
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DPRINTF("Skipping unmodified page\n");
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return 0;
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} else if (encoded_len == -1) {
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DPRINTF("Overflow\n");
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acct_info.xbzrle_overflows++;
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/* update data in the cache */
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memcpy(prev_cached_page, current_data, TARGET_PAGE_SIZE);
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return -1;
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}
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/* we need to update the data in the cache, in order to get the same data */
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if (!last_stage) {
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memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE);
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}
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/* Send XBZRLE based compressed page */
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save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE);
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qemu_put_byte(f, ENCODING_FLAG_XBZRLE);
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qemu_put_be16(f, encoded_len);
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qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len);
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bytes_sent = encoded_len + 1 + 2;
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acct_info.xbzrle_pages++;
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acct_info.xbzrle_bytes += bytes_sent;
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return bytes_sent;
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}
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static RAMBlock *last_block;
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static ram_addr_t last_offset;
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static unsigned long *migration_bitmap;
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static uint64_t migration_dirty_pages;
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static inline bool migration_bitmap_test_and_reset_dirty(MemoryRegion *mr,
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ram_addr_t offset)
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{
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bool ret;
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int nr = (mr->ram_addr + offset) >> TARGET_PAGE_BITS;
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ret = test_and_clear_bit(nr, migration_bitmap);
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if (ret) {
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migration_dirty_pages--;
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}
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return ret;
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}
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static inline bool migration_bitmap_set_dirty(MemoryRegion *mr,
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ram_addr_t offset)
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{
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bool ret;
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int nr = (mr->ram_addr + offset) >> TARGET_PAGE_BITS;
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ret = test_and_set_bit(nr, migration_bitmap);
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if (!ret) {
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migration_dirty_pages++;
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}
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return ret;
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}
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static void migration_bitmap_sync(void)
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{
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RAMBlock *block;
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ram_addr_t addr;
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uint64_t num_dirty_pages_init = migration_dirty_pages;
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MigrationState *s = migrate_get_current();
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static int64_t start_time;
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static int64_t num_dirty_pages_period;
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int64_t end_time;
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if (!start_time) {
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start_time = qemu_get_clock_ms(rt_clock);
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}
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trace_migration_bitmap_sync_start();
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memory_global_sync_dirty_bitmap(get_system_memory());
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QLIST_FOREACH(block, &ram_list.blocks, next) {
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for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
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if (memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
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DIRTY_MEMORY_MIGRATION)) {
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migration_bitmap_set_dirty(block->mr, addr);
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}
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}
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memory_region_reset_dirty(block->mr, 0, block->length,
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DIRTY_MEMORY_MIGRATION);
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}
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trace_migration_bitmap_sync_end(migration_dirty_pages
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- num_dirty_pages_init);
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num_dirty_pages_period += migration_dirty_pages - num_dirty_pages_init;
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end_time = qemu_get_clock_ms(rt_clock);
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/* more than 1 second = 1000 millisecons */
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if (end_time > start_time + 1000) {
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s->dirty_pages_rate = num_dirty_pages_period * 1000
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/ (end_time - start_time);
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start_time = end_time;
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num_dirty_pages_period = 0;
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}
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}
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/*
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* ram_save_block: Writes a page of memory to the stream f
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*
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* Returns: 0: if the page hasn't changed
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* -1: if there are no more dirty pages
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* n: the amount of bytes written in other case
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*/
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static int ram_save_block(QEMUFile *f, bool last_stage)
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{
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RAMBlock *block = last_block;
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ram_addr_t offset = last_offset;
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int bytes_sent = -1;
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MemoryRegion *mr;
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ram_addr_t current_addr;
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if (!block)
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block = QLIST_FIRST(&ram_list.blocks);
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do {
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mr = block->mr;
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if (migration_bitmap_test_and_reset_dirty(mr, offset)) {
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uint8_t *p;
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int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
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p = memory_region_get_ram_ptr(mr) + offset;
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if (is_dup_page(p)) {
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acct_info.dup_pages++;
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save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_COMPRESS);
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qemu_put_byte(f, *p);
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bytes_sent = 1;
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} else if (migrate_use_xbzrle()) {
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current_addr = block->offset + offset;
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bytes_sent = save_xbzrle_page(f, p, current_addr, block,
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offset, cont, last_stage);
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if (!last_stage) {
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p = get_cached_data(XBZRLE.cache, current_addr);
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}
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}
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/* either we didn't send yet (we may have had XBZRLE overflow) */
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if (bytes_sent == -1) {
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save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
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qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
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bytes_sent = TARGET_PAGE_SIZE;
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acct_info.norm_pages++;
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}
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/* if page is unmodified, continue to the next */
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if (bytes_sent != 0) {
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break;
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}
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}
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offset += TARGET_PAGE_SIZE;
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if (offset >= block->length) {
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offset = 0;
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block = QLIST_NEXT(block, next);
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if (!block)
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block = QLIST_FIRST(&ram_list.blocks);
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}
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} while (block != last_block || offset != last_offset);
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last_block = block;
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last_offset = offset;
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return bytes_sent;
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}
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static uint64_t bytes_transferred;
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static ram_addr_t ram_save_remaining(void)
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{
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return migration_dirty_pages;
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}
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uint64_t ram_bytes_remaining(void)
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{
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return ram_save_remaining() * TARGET_PAGE_SIZE;
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}
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uint64_t ram_bytes_transferred(void)
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{
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return bytes_transferred;
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}
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uint64_t ram_bytes_total(void)
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{
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RAMBlock *block;
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uint64_t total = 0;
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QLIST_FOREACH(block, &ram_list.blocks, next)
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total += block->length;
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return total;
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}
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static int block_compar(const void *a, const void *b)
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{
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RAMBlock * const *ablock = a;
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RAMBlock * const *bblock = b;
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|
|
|
return strcmp((*ablock)->idstr, (*bblock)->idstr);
|
|
}
|
|
|
|
static void sort_ram_list(void)
|
|
{
|
|
RAMBlock *block, *nblock, **blocks;
|
|
int n;
|
|
n = 0;
|
|
QLIST_FOREACH(block, &ram_list.blocks, next) {
|
|
++n;
|
|
}
|
|
blocks = g_malloc(n * sizeof *blocks);
|
|
n = 0;
|
|
QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
|
|
blocks[n++] = block;
|
|
QLIST_REMOVE(block, next);
|
|
}
|
|
qsort(blocks, n, sizeof *blocks, block_compar);
|
|
while (--n >= 0) {
|
|
QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
|
|
}
|
|
g_free(blocks);
|
|
}
|
|
|
|
static void migration_end(void)
|
|
{
|
|
memory_global_dirty_log_stop();
|
|
|
|
if (migrate_use_xbzrle()) {
|
|
cache_fini(XBZRLE.cache);
|
|
g_free(XBZRLE.cache);
|
|
g_free(XBZRLE.encoded_buf);
|
|
g_free(XBZRLE.current_buf);
|
|
g_free(XBZRLE.decoded_buf);
|
|
XBZRLE.cache = NULL;
|
|
}
|
|
}
|
|
|
|
static void ram_migration_cancel(void *opaque)
|
|
{
|
|
migration_end();
|
|
}
|
|
|
|
|
|
static void reset_ram_globals(void)
|
|
{
|
|
last_block = NULL;
|
|
last_offset = 0;
|
|
sort_ram_list();
|
|
}
|
|
|
|
#define MAX_WAIT 50 /* ms, half buffered_file limit */
|
|
|
|
static int ram_save_setup(QEMUFile *f, void *opaque)
|
|
{
|
|
RAMBlock *block;
|
|
int64_t ram_pages = last_ram_offset() >> TARGET_PAGE_BITS;
|
|
|
|
migration_bitmap = bitmap_new(ram_pages);
|
|
bitmap_set(migration_bitmap, 1, ram_pages);
|
|
migration_dirty_pages = ram_pages;
|
|
|
|
bytes_transferred = 0;
|
|
reset_ram_globals();
|
|
|
|
if (migrate_use_xbzrle()) {
|
|
XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() /
|
|
TARGET_PAGE_SIZE,
|
|
TARGET_PAGE_SIZE);
|
|
if (!XBZRLE.cache) {
|
|
DPRINTF("Error creating cache\n");
|
|
return -1;
|
|
}
|
|
XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE);
|
|
XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE);
|
|
acct_clear();
|
|
}
|
|
|
|
memory_global_dirty_log_start();
|
|
migration_bitmap_sync();
|
|
|
|
qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
|
|
|
|
QLIST_FOREACH(block, &ram_list.blocks, next) {
|
|
qemu_put_byte(f, strlen(block->idstr));
|
|
qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
|
|
qemu_put_be64(f, block->length);
|
|
}
|
|
|
|
qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ram_save_iterate(QEMUFile *f, void *opaque)
|
|
{
|
|
uint64_t bytes_transferred_last;
|
|
double bwidth = 0;
|
|
int ret;
|
|
int i;
|
|
uint64_t expected_downtime;
|
|
MigrationState *s = migrate_get_current();
|
|
|
|
bytes_transferred_last = bytes_transferred;
|
|
bwidth = qemu_get_clock_ns(rt_clock);
|
|
|
|
i = 0;
|
|
while ((ret = qemu_file_rate_limit(f)) == 0) {
|
|
int bytes_sent;
|
|
|
|
bytes_sent = ram_save_block(f, false);
|
|
/* no more blocks to sent */
|
|
if (bytes_sent < 0) {
|
|
break;
|
|
}
|
|
bytes_transferred += bytes_sent;
|
|
acct_info.iterations++;
|
|
/* we want to check in the 1st loop, just in case it was the 1st time
|
|
and we had to sync the dirty bitmap.
|
|
qemu_get_clock_ns() is a bit expensive, so we only check each some
|
|
iterations
|
|
*/
|
|
if ((i & 63) == 0) {
|
|
uint64_t t1 = (qemu_get_clock_ns(rt_clock) - bwidth) / 1000000;
|
|
if (t1 > MAX_WAIT) {
|
|
DPRINTF("big wait: %" PRIu64 " milliseconds, %d iterations\n",
|
|
t1, i);
|
|
break;
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
|
|
bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
|
|
bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
|
|
|
|
/* if we haven't transferred anything this round, force
|
|
* expected_downtime to a very high value, but without
|
|
* crashing */
|
|
if (bwidth == 0) {
|
|
bwidth = 0.000001;
|
|
}
|
|
|
|
qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
|
|
|
|
expected_downtime = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
|
|
DPRINTF("ram_save_live: expected(%" PRIu64 ") <= max(" PRIu64 ")?\n",
|
|
expected_downtime, migrate_max_downtime());
|
|
|
|
if (expected_downtime <= migrate_max_downtime()) {
|
|
migration_bitmap_sync();
|
|
expected_downtime = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
|
|
s->expected_downtime = expected_downtime / 1000000; /* ns -> ms */
|
|
|
|
return expected_downtime <= migrate_max_downtime();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int ram_save_complete(QEMUFile *f, void *opaque)
|
|
{
|
|
migration_bitmap_sync();
|
|
|
|
/* try transferring iterative blocks of memory */
|
|
|
|
/* flush all remaining blocks regardless of rate limiting */
|
|
while (true) {
|
|
int bytes_sent;
|
|
|
|
bytes_sent = ram_save_block(f, true);
|
|
/* no more blocks to sent */
|
|
if (bytes_sent < 0) {
|
|
break;
|
|
}
|
|
bytes_transferred += bytes_sent;
|
|
}
|
|
memory_global_dirty_log_stop();
|
|
|
|
qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
|
|
|
|
g_free(migration_bitmap);
|
|
migration_bitmap = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host)
|
|
{
|
|
int ret, rc = 0;
|
|
unsigned int xh_len;
|
|
int xh_flags;
|
|
|
|
if (!XBZRLE.decoded_buf) {
|
|
XBZRLE.decoded_buf = g_malloc(TARGET_PAGE_SIZE);
|
|
}
|
|
|
|
/* extract RLE header */
|
|
xh_flags = qemu_get_byte(f);
|
|
xh_len = qemu_get_be16(f);
|
|
|
|
if (xh_flags != ENCODING_FLAG_XBZRLE) {
|
|
fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n");
|
|
return -1;
|
|
}
|
|
|
|
if (xh_len > TARGET_PAGE_SIZE) {
|
|
fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n");
|
|
return -1;
|
|
}
|
|
/* load data and decode */
|
|
qemu_get_buffer(f, XBZRLE.decoded_buf, xh_len);
|
|
|
|
/* decode RLE */
|
|
ret = xbzrle_decode_buffer(XBZRLE.decoded_buf, xh_len, host,
|
|
TARGET_PAGE_SIZE);
|
|
if (ret == -1) {
|
|
fprintf(stderr, "Failed to load XBZRLE page - decode error!\n");
|
|
rc = -1;
|
|
} else if (ret > TARGET_PAGE_SIZE) {
|
|
fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n",
|
|
ret, TARGET_PAGE_SIZE);
|
|
abort();
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static inline void *host_from_stream_offset(QEMUFile *f,
|
|
ram_addr_t offset,
|
|
int flags)
|
|
{
|
|
static RAMBlock *block = NULL;
|
|
char id[256];
|
|
uint8_t len;
|
|
|
|
if (flags & RAM_SAVE_FLAG_CONTINUE) {
|
|
if (!block) {
|
|
fprintf(stderr, "Ack, bad migration stream!\n");
|
|
return NULL;
|
|
}
|
|
|
|
return memory_region_get_ram_ptr(block->mr) + offset;
|
|
}
|
|
|
|
len = qemu_get_byte(f);
|
|
qemu_get_buffer(f, (uint8_t *)id, len);
|
|
id[len] = 0;
|
|
|
|
QLIST_FOREACH(block, &ram_list.blocks, next) {
|
|
if (!strncmp(id, block->idstr, sizeof(id)))
|
|
return memory_region_get_ram_ptr(block->mr) + offset;
|
|
}
|
|
|
|
fprintf(stderr, "Can't find block %s!\n", id);
|
|
return NULL;
|
|
}
|
|
|
|
static int ram_load(QEMUFile *f, void *opaque, int version_id)
|
|
{
|
|
ram_addr_t addr;
|
|
int flags, ret = 0;
|
|
int error;
|
|
static uint64_t seq_iter;
|
|
|
|
seq_iter++;
|
|
|
|
if (version_id < 4 || version_id > 4) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
do {
|
|
addr = qemu_get_be64(f);
|
|
|
|
flags = addr & ~TARGET_PAGE_MASK;
|
|
addr &= TARGET_PAGE_MASK;
|
|
|
|
if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
|
|
if (version_id == 4) {
|
|
/* Synchronize RAM block list */
|
|
char id[256];
|
|
ram_addr_t length;
|
|
ram_addr_t total_ram_bytes = addr;
|
|
|
|
while (total_ram_bytes) {
|
|
RAMBlock *block;
|
|
uint8_t len;
|
|
|
|
len = qemu_get_byte(f);
|
|
qemu_get_buffer(f, (uint8_t *)id, len);
|
|
id[len] = 0;
|
|
length = qemu_get_be64(f);
|
|
|
|
QLIST_FOREACH(block, &ram_list.blocks, next) {
|
|
if (!strncmp(id, block->idstr, sizeof(id))) {
|
|
if (block->length != length) {
|
|
ret = -EINVAL;
|
|
goto done;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!block) {
|
|
fprintf(stderr, "Unknown ramblock \"%s\", cannot "
|
|
"accept migration\n", id);
|
|
ret = -EINVAL;
|
|
goto done;
|
|
}
|
|
|
|
total_ram_bytes -= length;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (flags & RAM_SAVE_FLAG_COMPRESS) {
|
|
void *host;
|
|
uint8_t ch;
|
|
|
|
host = host_from_stream_offset(f, addr, flags);
|
|
if (!host) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
ch = qemu_get_byte(f);
|
|
memset(host, ch, TARGET_PAGE_SIZE);
|
|
#ifndef _WIN32
|
|
if (ch == 0 &&
|
|
(!kvm_enabled() || kvm_has_sync_mmu())) {
|
|
qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
|
|
}
|
|
#endif
|
|
} else if (flags & RAM_SAVE_FLAG_PAGE) {
|
|
void *host;
|
|
|
|
host = host_from_stream_offset(f, addr, flags);
|
|
if (!host) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
|
|
} else if (flags & RAM_SAVE_FLAG_XBZRLE) {
|
|
if (!migrate_use_xbzrle()) {
|
|
return -EINVAL;
|
|
}
|
|
void *host = host_from_stream_offset(f, addr, flags);
|
|
if (!host) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (load_xbzrle(f, addr, host) < 0) {
|
|
ret = -EINVAL;
|
|
goto done;
|
|
}
|
|
}
|
|
error = qemu_file_get_error(f);
|
|
if (error) {
|
|
ret = error;
|
|
goto done;
|
|
}
|
|
} while (!(flags & RAM_SAVE_FLAG_EOS));
|
|
|
|
done:
|
|
DPRINTF("Completed load of VM with exit code %d seq iteration "
|
|
"%" PRIu64 "\n", ret, seq_iter);
|
|
return ret;
|
|
}
|
|
|
|
SaveVMHandlers savevm_ram_handlers = {
|
|
.save_live_setup = ram_save_setup,
|
|
.save_live_iterate = ram_save_iterate,
|
|
.save_live_complete = ram_save_complete,
|
|
.load_state = ram_load,
|
|
.cancel = ram_migration_cancel,
|
|
};
|
|
|
|
#ifdef HAS_AUDIO
|
|
struct soundhw {
|
|
const char *name;
|
|
const char *descr;
|
|
int enabled;
|
|
int isa;
|
|
union {
|
|
int (*init_isa) (ISABus *bus);
|
|
int (*init_pci) (PCIBus *bus);
|
|
} init;
|
|
};
|
|
|
|
static struct soundhw soundhw[] = {
|
|
#ifdef HAS_AUDIO_CHOICE
|
|
#ifdef CONFIG_PCSPK
|
|
{
|
|
"pcspk",
|
|
"PC speaker",
|
|
0,
|
|
1,
|
|
{ .init_isa = pcspk_audio_init }
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_SB16
|
|
{
|
|
"sb16",
|
|
"Creative Sound Blaster 16",
|
|
0,
|
|
1,
|
|
{ .init_isa = SB16_init }
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_CS4231A
|
|
{
|
|
"cs4231a",
|
|
"CS4231A",
|
|
0,
|
|
1,
|
|
{ .init_isa = cs4231a_init }
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_ADLIB
|
|
{
|
|
"adlib",
|
|
#ifdef HAS_YMF262
|
|
"Yamaha YMF262 (OPL3)",
|
|
#else
|
|
"Yamaha YM3812 (OPL2)",
|
|
#endif
|
|
0,
|
|
1,
|
|
{ .init_isa = Adlib_init }
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_GUS
|
|
{
|
|
"gus",
|
|
"Gravis Ultrasound GF1",
|
|
0,
|
|
1,
|
|
{ .init_isa = GUS_init }
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_AC97
|
|
{
|
|
"ac97",
|
|
"Intel 82801AA AC97 Audio",
|
|
0,
|
|
0,
|
|
{ .init_pci = ac97_init }
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_ES1370
|
|
{
|
|
"es1370",
|
|
"ENSONIQ AudioPCI ES1370",
|
|
0,
|
|
0,
|
|
{ .init_pci = es1370_init }
|
|
},
|
|
#endif
|
|
|
|
#ifdef CONFIG_HDA
|
|
{
|
|
"hda",
|
|
"Intel HD Audio",
|
|
0,
|
|
0,
|
|
{ .init_pci = intel_hda_and_codec_init }
|
|
},
|
|
#endif
|
|
|
|
#endif /* HAS_AUDIO_CHOICE */
|
|
|
|
{ NULL, NULL, 0, 0, { NULL } }
|
|
};
|
|
|
|
void select_soundhw(const char *optarg)
|
|
{
|
|
struct soundhw *c;
|
|
|
|
if (is_help_option(optarg)) {
|
|
show_valid_cards:
|
|
|
|
#ifdef HAS_AUDIO_CHOICE
|
|
printf("Valid sound card names (comma separated):\n");
|
|
for (c = soundhw; c->name; ++c) {
|
|
printf ("%-11s %s\n", c->name, c->descr);
|
|
}
|
|
printf("\n-soundhw all will enable all of the above\n");
|
|
#else
|
|
printf("Machine has no user-selectable audio hardware "
|
|
"(it may or may not have always-present audio hardware).\n");
|
|
#endif
|
|
exit(!is_help_option(optarg));
|
|
}
|
|
else {
|
|
size_t l;
|
|
const char *p;
|
|
char *e;
|
|
int bad_card = 0;
|
|
|
|
if (!strcmp(optarg, "all")) {
|
|
for (c = soundhw; c->name; ++c) {
|
|
c->enabled = 1;
|
|
}
|
|
return;
|
|
}
|
|
|
|
p = optarg;
|
|
while (*p) {
|
|
e = strchr(p, ',');
|
|
l = !e ? strlen(p) : (size_t) (e - p);
|
|
|
|
for (c = soundhw; c->name; ++c) {
|
|
if (!strncmp(c->name, p, l) && !c->name[l]) {
|
|
c->enabled = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!c->name) {
|
|
if (l > 80) {
|
|
fprintf(stderr,
|
|
"Unknown sound card name (too big to show)\n");
|
|
}
|
|
else {
|
|
fprintf(stderr, "Unknown sound card name `%.*s'\n",
|
|
(int) l, p);
|
|
}
|
|
bad_card = 1;
|
|
}
|
|
p += l + (e != NULL);
|
|
}
|
|
|
|
if (bad_card) {
|
|
goto show_valid_cards;
|
|
}
|
|
}
|
|
}
|
|
|
|
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
|
|
{
|
|
struct soundhw *c;
|
|
|
|
for (c = soundhw; c->name; ++c) {
|
|
if (c->enabled) {
|
|
if (c->isa) {
|
|
if (isa_bus) {
|
|
c->init.init_isa(isa_bus);
|
|
}
|
|
} else {
|
|
if (pci_bus) {
|
|
c->init.init_pci(pci_bus);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
void select_soundhw(const char *optarg)
|
|
{
|
|
}
|
|
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
int qemu_uuid_parse(const char *str, uint8_t *uuid)
|
|
{
|
|
int ret;
|
|
|
|
if (strlen(str) != 36) {
|
|
return -1;
|
|
}
|
|
|
|
ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
|
|
&uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
|
|
&uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
|
|
&uuid[15]);
|
|
|
|
if (ret != 16) {
|
|
return -1;
|
|
}
|
|
#ifdef TARGET_I386
|
|
smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
void do_acpitable_option(const char *optarg)
|
|
{
|
|
#ifdef TARGET_I386
|
|
if (acpi_table_add(optarg) < 0) {
|
|
fprintf(stderr, "Wrong acpi table provided\n");
|
|
exit(1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void do_smbios_option(const char *optarg)
|
|
{
|
|
#ifdef TARGET_I386
|
|
if (smbios_entry_add(optarg) < 0) {
|
|
fprintf(stderr, "Wrong smbios provided\n");
|
|
exit(1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void cpudef_init(void)
|
|
{
|
|
#if defined(cpudef_setup)
|
|
cpudef_setup(); /* parse cpu definitions in target config file */
|
|
#endif
|
|
}
|
|
|
|
int audio_available(void)
|
|
{
|
|
#ifdef HAS_AUDIO
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
int tcg_available(void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int kvm_available(void)
|
|
{
|
|
#ifdef CONFIG_KVM
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
int xen_available(void)
|
|
{
|
|
#ifdef CONFIG_XEN
|
|
return 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
|
|
TargetInfo *qmp_query_target(Error **errp)
|
|
{
|
|
TargetInfo *info = g_malloc0(sizeof(*info));
|
|
|
|
info->arch = TARGET_TYPE;
|
|
|
|
return info;
|
|
}
|