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/*
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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 "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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#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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/*
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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; |
349 |
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if (!block)
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block = QLIST_FIRST(&ram_list.blocks); |
352 |
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do {
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mr = block->mr; |
355 |
if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE,
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DIRTY_MEMORY_MIGRATION)) { |
357 |
uint8_t *p; |
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int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0; |
359 |
|
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memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE, |
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DIRTY_MEMORY_MIGRATION); |
362 |
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p = memory_region_get_ram_ptr(mr) + offset; |
364 |
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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); |
368 |
qemu_put_byte(f, *p); |
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bytes_sent = 1;
|
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} else if (migrate_use_xbzrle()) { |
371 |
current_addr = block->offset + offset; |
372 |
bytes_sent = save_xbzrle_page(f, p, current_addr, block, |
373 |
offset, cont, last_stage); |
374 |
if (!last_stage) {
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p = get_cached_data(XBZRLE.cache, current_addr); |
376 |
} |
377 |
} |
378 |
|
379 |
/* either we didn't send yet (we may have had XBZRLE overflow) */
|
380 |
if (bytes_sent == -1) { |
381 |
save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE); |
382 |
qemu_put_buffer(f, p, TARGET_PAGE_SIZE); |
383 |
bytes_sent = TARGET_PAGE_SIZE; |
384 |
acct_info.norm_pages++; |
385 |
} |
386 |
|
387 |
/* if page is unmodified, continue to the next */
|
388 |
if (bytes_sent != 0) { |
389 |
break;
|
390 |
} |
391 |
} |
392 |
|
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offset += TARGET_PAGE_SIZE; |
394 |
if (offset >= block->length) {
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395 |
offset = 0;
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396 |
block = QLIST_NEXT(block, next); |
397 |
if (!block)
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block = QLIST_FIRST(&ram_list.blocks); |
399 |
} |
400 |
} while (block != last_block || offset != last_offset);
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401 |
|
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last_block = block; |
403 |
last_offset = offset; |
404 |
|
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return bytes_sent;
|
406 |
} |
407 |
|
408 |
static uint64_t bytes_transferred;
|
409 |
|
410 |
static ram_addr_t ram_save_remaining(void) |
411 |
{ |
412 |
return ram_list.dirty_pages;
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} |
414 |
|
415 |
uint64_t ram_bytes_remaining(void)
|
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{ |
417 |
return ram_save_remaining() * TARGET_PAGE_SIZE;
|
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} |
419 |
|
420 |
uint64_t ram_bytes_transferred(void)
|
421 |
{ |
422 |
return bytes_transferred;
|
423 |
} |
424 |
|
425 |
uint64_t ram_bytes_total(void)
|
426 |
{ |
427 |
RAMBlock *block; |
428 |
uint64_t total = 0;
|
429 |
|
430 |
QLIST_FOREACH(block, &ram_list.blocks, next) |
431 |
total += block->length; |
432 |
|
433 |
return total;
|
434 |
} |
435 |
|
436 |
static int block_compar(const void *a, const void *b) |
437 |
{ |
438 |
RAMBlock * const *ablock = a;
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439 |
RAMBlock * const *bblock = b;
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440 |
|
441 |
return strcmp((*ablock)->idstr, (*bblock)->idstr);
|
442 |
} |
443 |
|
444 |
static void sort_ram_list(void) |
445 |
{ |
446 |
RAMBlock *block, *nblock, **blocks; |
447 |
int n;
|
448 |
n = 0;
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449 |
QLIST_FOREACH(block, &ram_list.blocks, next) { |
450 |
++n; |
451 |
} |
452 |
blocks = g_malloc(n * sizeof *blocks);
|
453 |
n = 0;
|
454 |
QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) { |
455 |
blocks[n++] = block; |
456 |
QLIST_REMOVE(block, next); |
457 |
} |
458 |
qsort(blocks, n, sizeof *blocks, block_compar);
|
459 |
while (--n >= 0) { |
460 |
QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next); |
461 |
} |
462 |
g_free(blocks); |
463 |
} |
464 |
|
465 |
static void migration_end(void) |
466 |
{ |
467 |
memory_global_dirty_log_stop(); |
468 |
|
469 |
if (migrate_use_xbzrle()) {
|
470 |
cache_fini(XBZRLE.cache); |
471 |
g_free(XBZRLE.cache); |
472 |
g_free(XBZRLE.encoded_buf); |
473 |
g_free(XBZRLE.current_buf); |
474 |
g_free(XBZRLE.decoded_buf); |
475 |
XBZRLE.cache = NULL;
|
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} |
477 |
} |
478 |
|
479 |
static void ram_migration_cancel(void *opaque) |
480 |
{ |
481 |
migration_end(); |
482 |
} |
483 |
|
484 |
#define MAX_WAIT 50 /* ms, half buffered_file limit */ |
485 |
|
486 |
static int ram_save_setup(QEMUFile *f, void *opaque) |
487 |
{ |
488 |
ram_addr_t addr; |
489 |
RAMBlock *block; |
490 |
|
491 |
bytes_transferred = 0;
|
492 |
last_block = NULL;
|
493 |
last_offset = 0;
|
494 |
sort_ram_list(); |
495 |
|
496 |
if (migrate_use_xbzrle()) {
|
497 |
XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() / |
498 |
TARGET_PAGE_SIZE, |
499 |
TARGET_PAGE_SIZE); |
500 |
if (!XBZRLE.cache) {
|
501 |
DPRINTF("Error creating cache\n");
|
502 |
return -1; |
503 |
} |
504 |
XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE); |
505 |
XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE); |
506 |
acct_clear(); |
507 |
} |
508 |
|
509 |
/* Make sure all dirty bits are set */
|
510 |
QLIST_FOREACH(block, &ram_list.blocks, next) { |
511 |
for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) { |
512 |
if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
|
513 |
DIRTY_MEMORY_MIGRATION)) { |
514 |
memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE); |
515 |
} |
516 |
} |
517 |
} |
518 |
|
519 |
memory_global_dirty_log_start(); |
520 |
|
521 |
qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE); |
522 |
|
523 |
QLIST_FOREACH(block, &ram_list.blocks, next) { |
524 |
qemu_put_byte(f, strlen(block->idstr)); |
525 |
qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr)); |
526 |
qemu_put_be64(f, block->length); |
527 |
} |
528 |
|
529 |
qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
530 |
|
531 |
return 0; |
532 |
} |
533 |
|
534 |
static int ram_save_iterate(QEMUFile *f, void *opaque) |
535 |
{ |
536 |
uint64_t bytes_transferred_last; |
537 |
double bwidth = 0; |
538 |
int ret;
|
539 |
int i;
|
540 |
uint64_t expected_time; |
541 |
|
542 |
bytes_transferred_last = bytes_transferred; |
543 |
bwidth = qemu_get_clock_ns(rt_clock); |
544 |
|
545 |
i = 0;
|
546 |
while ((ret = qemu_file_rate_limit(f)) == 0) { |
547 |
int bytes_sent;
|
548 |
|
549 |
bytes_sent = ram_save_block(f, false);
|
550 |
/* no more blocks to sent */
|
551 |
if (bytes_sent < 0) { |
552 |
break;
|
553 |
} |
554 |
bytes_transferred += bytes_sent; |
555 |
acct_info.iterations++; |
556 |
/* we want to check in the 1st loop, just in case it was the 1st time
|
557 |
and we had to sync the dirty bitmap.
|
558 |
qemu_get_clock_ns() is a bit expensive, so we only check each some
|
559 |
iterations
|
560 |
*/
|
561 |
if ((i & 63) == 0) { |
562 |
uint64_t t1 = (qemu_get_clock_ns(rt_clock) - bwidth) / 1000000;
|
563 |
if (t1 > MAX_WAIT) {
|
564 |
DPRINTF("big wait: %" PRIu64 " milliseconds, %d iterations\n", |
565 |
t1, i); |
566 |
break;
|
567 |
} |
568 |
} |
569 |
i++; |
570 |
} |
571 |
|
572 |
if (ret < 0) { |
573 |
return ret;
|
574 |
} |
575 |
|
576 |
bwidth = qemu_get_clock_ns(rt_clock) - bwidth; |
577 |
bwidth = (bytes_transferred - bytes_transferred_last) / bwidth; |
578 |
|
579 |
/* if we haven't transferred anything this round, force expected_time to a
|
580 |
* a very high value, but without crashing */
|
581 |
if (bwidth == 0) { |
582 |
bwidth = 0.000001; |
583 |
} |
584 |
|
585 |
qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
586 |
|
587 |
expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth; |
588 |
|
589 |
DPRINTF("ram_save_live: expected(%" PRIu64 ") <= max(%" PRIu64 ")?\n", |
590 |
expected_time, migrate_max_downtime()); |
591 |
|
592 |
if (expected_time <= migrate_max_downtime()) {
|
593 |
memory_global_sync_dirty_bitmap(get_system_memory()); |
594 |
expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth; |
595 |
|
596 |
return expected_time <= migrate_max_downtime();
|
597 |
} |
598 |
return 0; |
599 |
} |
600 |
|
601 |
static int ram_save_complete(QEMUFile *f, void *opaque) |
602 |
{ |
603 |
memory_global_sync_dirty_bitmap(get_system_memory()); |
604 |
|
605 |
/* try transferring iterative blocks of memory */
|
606 |
|
607 |
/* flush all remaining blocks regardless of rate limiting */
|
608 |
while (true) { |
609 |
int bytes_sent;
|
610 |
|
611 |
bytes_sent = ram_save_block(f, true);
|
612 |
/* no more blocks to sent */
|
613 |
if (bytes_sent < 0) { |
614 |
break;
|
615 |
} |
616 |
bytes_transferred += bytes_sent; |
617 |
} |
618 |
memory_global_dirty_log_stop(); |
619 |
|
620 |
qemu_put_be64(f, RAM_SAVE_FLAG_EOS); |
621 |
|
622 |
return 0; |
623 |
} |
624 |
|
625 |
static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host) |
626 |
{ |
627 |
int ret, rc = 0; |
628 |
unsigned int xh_len; |
629 |
int xh_flags;
|
630 |
|
631 |
if (!XBZRLE.decoded_buf) {
|
632 |
XBZRLE.decoded_buf = g_malloc(TARGET_PAGE_SIZE); |
633 |
} |
634 |
|
635 |
/* extract RLE header */
|
636 |
xh_flags = qemu_get_byte(f); |
637 |
xh_len = qemu_get_be16(f); |
638 |
|
639 |
if (xh_flags != ENCODING_FLAG_XBZRLE) {
|
640 |
fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n");
|
641 |
return -1; |
642 |
} |
643 |
|
644 |
if (xh_len > TARGET_PAGE_SIZE) {
|
645 |
fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n");
|
646 |
return -1; |
647 |
} |
648 |
/* load data and decode */
|
649 |
qemu_get_buffer(f, XBZRLE.decoded_buf, xh_len); |
650 |
|
651 |
/* decode RLE */
|
652 |
ret = xbzrle_decode_buffer(XBZRLE.decoded_buf, xh_len, host, |
653 |
TARGET_PAGE_SIZE); |
654 |
if (ret == -1) { |
655 |
fprintf(stderr, "Failed to load XBZRLE page - decode error!\n");
|
656 |
rc = -1;
|
657 |
} else if (ret > TARGET_PAGE_SIZE) { |
658 |
fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n",
|
659 |
ret, TARGET_PAGE_SIZE); |
660 |
abort(); |
661 |
} |
662 |
|
663 |
return rc;
|
664 |
} |
665 |
|
666 |
static inline void *host_from_stream_offset(QEMUFile *f, |
667 |
ram_addr_t offset, |
668 |
int flags)
|
669 |
{ |
670 |
static RAMBlock *block = NULL; |
671 |
char id[256]; |
672 |
uint8_t len; |
673 |
|
674 |
if (flags & RAM_SAVE_FLAG_CONTINUE) {
|
675 |
if (!block) {
|
676 |
fprintf(stderr, "Ack, bad migration stream!\n");
|
677 |
return NULL; |
678 |
} |
679 |
|
680 |
return memory_region_get_ram_ptr(block->mr) + offset;
|
681 |
} |
682 |
|
683 |
len = qemu_get_byte(f); |
684 |
qemu_get_buffer(f, (uint8_t *)id, len); |
685 |
id[len] = 0;
|
686 |
|
687 |
QLIST_FOREACH(block, &ram_list.blocks, next) { |
688 |
if (!strncmp(id, block->idstr, sizeof(id))) |
689 |
return memory_region_get_ram_ptr(block->mr) + offset;
|
690 |
} |
691 |
|
692 |
fprintf(stderr, "Can't find block %s!\n", id);
|
693 |
return NULL; |
694 |
} |
695 |
|
696 |
static int ram_load(QEMUFile *f, void *opaque, int version_id) |
697 |
{ |
698 |
ram_addr_t addr; |
699 |
int flags, ret = 0; |
700 |
int error;
|
701 |
static uint64_t seq_iter;
|
702 |
|
703 |
seq_iter++; |
704 |
|
705 |
if (version_id < 4 || version_id > 4) { |
706 |
return -EINVAL;
|
707 |
} |
708 |
|
709 |
do {
|
710 |
addr = qemu_get_be64(f); |
711 |
|
712 |
flags = addr & ~TARGET_PAGE_MASK; |
713 |
addr &= TARGET_PAGE_MASK; |
714 |
|
715 |
if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
|
716 |
if (version_id == 4) { |
717 |
/* Synchronize RAM block list */
|
718 |
char id[256]; |
719 |
ram_addr_t length; |
720 |
ram_addr_t total_ram_bytes = addr; |
721 |
|
722 |
while (total_ram_bytes) {
|
723 |
RAMBlock *block; |
724 |
uint8_t len; |
725 |
|
726 |
len = qemu_get_byte(f); |
727 |
qemu_get_buffer(f, (uint8_t *)id, len); |
728 |
id[len] = 0;
|
729 |
length = qemu_get_be64(f); |
730 |
|
731 |
QLIST_FOREACH(block, &ram_list.blocks, next) { |
732 |
if (!strncmp(id, block->idstr, sizeof(id))) { |
733 |
if (block->length != length) {
|
734 |
ret = -EINVAL; |
735 |
goto done;
|
736 |
} |
737 |
break;
|
738 |
} |
739 |
} |
740 |
|
741 |
if (!block) {
|
742 |
fprintf(stderr, "Unknown ramblock \"%s\", cannot "
|
743 |
"accept migration\n", id);
|
744 |
ret = -EINVAL; |
745 |
goto done;
|
746 |
} |
747 |
|
748 |
total_ram_bytes -= length; |
749 |
} |
750 |
} |
751 |
} |
752 |
|
753 |
if (flags & RAM_SAVE_FLAG_COMPRESS) {
|
754 |
void *host;
|
755 |
uint8_t ch; |
756 |
|
757 |
host = host_from_stream_offset(f, addr, flags); |
758 |
if (!host) {
|
759 |
return -EINVAL;
|
760 |
} |
761 |
|
762 |
ch = qemu_get_byte(f); |
763 |
memset(host, ch, TARGET_PAGE_SIZE); |
764 |
#ifndef _WIN32
|
765 |
if (ch == 0 && |
766 |
(!kvm_enabled() || kvm_has_sync_mmu())) { |
767 |
qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED); |
768 |
} |
769 |
#endif
|
770 |
} else if (flags & RAM_SAVE_FLAG_PAGE) { |
771 |
void *host;
|
772 |
|
773 |
host = host_from_stream_offset(f, addr, flags); |
774 |
if (!host) {
|
775 |
return -EINVAL;
|
776 |
} |
777 |
|
778 |
qemu_get_buffer(f, host, TARGET_PAGE_SIZE); |
779 |
} else if (flags & RAM_SAVE_FLAG_XBZRLE) { |
780 |
if (!migrate_use_xbzrle()) {
|
781 |
return -EINVAL;
|
782 |
} |
783 |
void *host = host_from_stream_offset(f, addr, flags);
|
784 |
if (!host) {
|
785 |
return -EINVAL;
|
786 |
} |
787 |
|
788 |
if (load_xbzrle(f, addr, host) < 0) { |
789 |
ret = -EINVAL; |
790 |
goto done;
|
791 |
} |
792 |
} |
793 |
error = qemu_file_get_error(f); |
794 |
if (error) {
|
795 |
ret = error; |
796 |
goto done;
|
797 |
} |
798 |
} while (!(flags & RAM_SAVE_FLAG_EOS));
|
799 |
|
800 |
done:
|
801 |
DPRINTF("Completed load of VM with exit code %d seq iteration "
|
802 |
"%" PRIu64 "\n", ret, seq_iter); |
803 |
return ret;
|
804 |
} |
805 |
|
806 |
SaveVMHandlers savevm_ram_handlers = { |
807 |
.save_live_setup = ram_save_setup, |
808 |
.save_live_iterate = ram_save_iterate, |
809 |
.save_live_complete = ram_save_complete, |
810 |
.load_state = ram_load, |
811 |
.cancel = ram_migration_cancel, |
812 |
}; |
813 |
|
814 |
#ifdef HAS_AUDIO
|
815 |
struct soundhw {
|
816 |
const char *name; |
817 |
const char *descr; |
818 |
int enabled;
|
819 |
int isa;
|
820 |
union {
|
821 |
int (*init_isa) (ISABus *bus);
|
822 |
int (*init_pci) (PCIBus *bus);
|
823 |
} init; |
824 |
}; |
825 |
|
826 |
static struct soundhw soundhw[] = { |
827 |
#ifdef HAS_AUDIO_CHOICE
|
828 |
#ifdef CONFIG_PCSPK
|
829 |
{ |
830 |
"pcspk",
|
831 |
"PC speaker",
|
832 |
0,
|
833 |
1,
|
834 |
{ .init_isa = pcspk_audio_init } |
835 |
}, |
836 |
#endif
|
837 |
|
838 |
#ifdef CONFIG_SB16
|
839 |
{ |
840 |
"sb16",
|
841 |
"Creative Sound Blaster 16",
|
842 |
0,
|
843 |
1,
|
844 |
{ .init_isa = SB16_init } |
845 |
}, |
846 |
#endif
|
847 |
|
848 |
#ifdef CONFIG_CS4231A
|
849 |
{ |
850 |
"cs4231a",
|
851 |
"CS4231A",
|
852 |
0,
|
853 |
1,
|
854 |
{ .init_isa = cs4231a_init } |
855 |
}, |
856 |
#endif
|
857 |
|
858 |
#ifdef CONFIG_ADLIB
|
859 |
{ |
860 |
"adlib",
|
861 |
#ifdef HAS_YMF262
|
862 |
"Yamaha YMF262 (OPL3)",
|
863 |
#else
|
864 |
"Yamaha YM3812 (OPL2)",
|
865 |
#endif
|
866 |
0,
|
867 |
1,
|
868 |
{ .init_isa = Adlib_init } |
869 |
}, |
870 |
#endif
|
871 |
|
872 |
#ifdef CONFIG_GUS
|
873 |
{ |
874 |
"gus",
|
875 |
"Gravis Ultrasound GF1",
|
876 |
0,
|
877 |
1,
|
878 |
{ .init_isa = GUS_init } |
879 |
}, |
880 |
#endif
|
881 |
|
882 |
#ifdef CONFIG_AC97
|
883 |
{ |
884 |
"ac97",
|
885 |
"Intel 82801AA AC97 Audio",
|
886 |
0,
|
887 |
0,
|
888 |
{ .init_pci = ac97_init } |
889 |
}, |
890 |
#endif
|
891 |
|
892 |
#ifdef CONFIG_ES1370
|
893 |
{ |
894 |
"es1370",
|
895 |
"ENSONIQ AudioPCI ES1370",
|
896 |
0,
|
897 |
0,
|
898 |
{ .init_pci = es1370_init } |
899 |
}, |
900 |
#endif
|
901 |
|
902 |
#ifdef CONFIG_HDA
|
903 |
{ |
904 |
"hda",
|
905 |
"Intel HD Audio",
|
906 |
0,
|
907 |
0,
|
908 |
{ .init_pci = intel_hda_and_codec_init } |
909 |
}, |
910 |
#endif
|
911 |
|
912 |
#endif /* HAS_AUDIO_CHOICE */ |
913 |
|
914 |
{ NULL, NULL, 0, 0, { NULL } } |
915 |
}; |
916 |
|
917 |
void select_soundhw(const char *optarg) |
918 |
{ |
919 |
struct soundhw *c;
|
920 |
|
921 |
if (is_help_option(optarg)) {
|
922 |
show_valid_cards:
|
923 |
|
924 |
#ifdef HAS_AUDIO_CHOICE
|
925 |
printf("Valid sound card names (comma separated):\n");
|
926 |
for (c = soundhw; c->name; ++c) {
|
927 |
printf ("%-11s %s\n", c->name, c->descr);
|
928 |
} |
929 |
printf("\n-soundhw all will enable all of the above\n");
|
930 |
#else
|
931 |
printf("Machine has no user-selectable audio hardware "
|
932 |
"(it may or may not have always-present audio hardware).\n");
|
933 |
#endif
|
934 |
exit(!is_help_option(optarg)); |
935 |
} |
936 |
else {
|
937 |
size_t l; |
938 |
const char *p; |
939 |
char *e;
|
940 |
int bad_card = 0; |
941 |
|
942 |
if (!strcmp(optarg, "all")) { |
943 |
for (c = soundhw; c->name; ++c) {
|
944 |
c->enabled = 1;
|
945 |
} |
946 |
return;
|
947 |
} |
948 |
|
949 |
p = optarg; |
950 |
while (*p) {
|
951 |
e = strchr(p, ',');
|
952 |
l = !e ? strlen(p) : (size_t) (e - p); |
953 |
|
954 |
for (c = soundhw; c->name; ++c) {
|
955 |
if (!strncmp(c->name, p, l) && !c->name[l]) {
|
956 |
c->enabled = 1;
|
957 |
break;
|
958 |
} |
959 |
} |
960 |
|
961 |
if (!c->name) {
|
962 |
if (l > 80) { |
963 |
fprintf(stderr, |
964 |
"Unknown sound card name (too big to show)\n");
|
965 |
} |
966 |
else {
|
967 |
fprintf(stderr, "Unknown sound card name `%.*s'\n",
|
968 |
(int) l, p);
|
969 |
} |
970 |
bad_card = 1;
|
971 |
} |
972 |
p += l + (e != NULL);
|
973 |
} |
974 |
|
975 |
if (bad_card) {
|
976 |
goto show_valid_cards;
|
977 |
} |
978 |
} |
979 |
} |
980 |
|
981 |
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
|
982 |
{ |
983 |
struct soundhw *c;
|
984 |
|
985 |
for (c = soundhw; c->name; ++c) {
|
986 |
if (c->enabled) {
|
987 |
if (c->isa) {
|
988 |
if (isa_bus) {
|
989 |
c->init.init_isa(isa_bus); |
990 |
} |
991 |
} else {
|
992 |
if (pci_bus) {
|
993 |
c->init.init_pci(pci_bus); |
994 |
} |
995 |
} |
996 |
} |
997 |
} |
998 |
} |
999 |
#else
|
1000 |
void select_soundhw(const char *optarg) |
1001 |
{ |
1002 |
} |
1003 |
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
|
1004 |
{ |
1005 |
} |
1006 |
#endif
|
1007 |
|
1008 |
int qemu_uuid_parse(const char *str, uint8_t *uuid) |
1009 |
{ |
1010 |
int ret;
|
1011 |
|
1012 |
if (strlen(str) != 36) { |
1013 |
return -1; |
1014 |
} |
1015 |
|
1016 |
ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3], |
1017 |
&uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9], |
1018 |
&uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], |
1019 |
&uuid[15]);
|
1020 |
|
1021 |
if (ret != 16) { |
1022 |
return -1; |
1023 |
} |
1024 |
#ifdef TARGET_I386
|
1025 |
smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid); |
1026 |
#endif
|
1027 |
return 0; |
1028 |
} |
1029 |
|
1030 |
void do_acpitable_option(const char *optarg) |
1031 |
{ |
1032 |
#ifdef TARGET_I386
|
1033 |
if (acpi_table_add(optarg) < 0) { |
1034 |
fprintf(stderr, "Wrong acpi table provided\n");
|
1035 |
exit(1);
|
1036 |
} |
1037 |
#endif
|
1038 |
} |
1039 |
|
1040 |
void do_smbios_option(const char *optarg) |
1041 |
{ |
1042 |
#ifdef TARGET_I386
|
1043 |
if (smbios_entry_add(optarg) < 0) { |
1044 |
fprintf(stderr, "Wrong smbios provided\n");
|
1045 |
exit(1);
|
1046 |
} |
1047 |
#endif
|
1048 |
} |
1049 |
|
1050 |
void cpudef_init(void) |
1051 |
{ |
1052 |
#if defined(cpudef_setup)
|
1053 |
cpudef_setup(); /* parse cpu definitions in target config file */
|
1054 |
#endif
|
1055 |
} |
1056 |
|
1057 |
int audio_available(void) |
1058 |
{ |
1059 |
#ifdef HAS_AUDIO
|
1060 |
return 1; |
1061 |
#else
|
1062 |
return 0; |
1063 |
#endif
|
1064 |
} |
1065 |
|
1066 |
int tcg_available(void) |
1067 |
{ |
1068 |
return 1; |
1069 |
} |
1070 |
|
1071 |
int kvm_available(void) |
1072 |
{ |
1073 |
#ifdef CONFIG_KVM
|
1074 |
return 1; |
1075 |
#else
|
1076 |
return 0; |
1077 |
#endif
|
1078 |
} |
1079 |
|
1080 |
int xen_available(void) |
1081 |
{ |
1082 |
#ifdef CONFIG_XEN
|
1083 |
return 1; |
1084 |
#else
|
1085 |
return 0; |
1086 |
#endif
|
1087 |
} |
1088 |
|
1089 |
|
1090 |
TargetInfo *qmp_query_target(Error **errp) |
1091 |
{ |
1092 |
TargetInfo *info = g_malloc0(sizeof(*info));
|
1093 |
|
1094 |
info->arch = TARGET_TYPE; |
1095 |
|
1096 |
return info;
|
1097 |
} |