cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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dirtyrate.h (2319B)

      1/*
      2 *  Dirtyrate common functions
      3 *
      4 *  Copyright (c) 2020 HUAWEI TECHNOLOGIES CO., LTD.
      5 *
      6 *  Authors:
      7 *  Chuan Zheng <zhengchuan@huawei.com>
      8 *
      9 *  This work is licensed under the terms of the GNU GPL, version 2 or later.
     10 *  See the COPYING file in the top-level directory.
     11 */
     12
     13#ifndef QEMU_MIGRATION_DIRTYRATE_H
     14#define QEMU_MIGRATION_DIRTYRATE_H
     15
     16/*
     17 * Sample 512 pages per GB as default.
     18 */
     19#define DIRTYRATE_DEFAULT_SAMPLE_PAGES            512
     20
     21/*
     22 * Record ramblock idstr
     23 */
     24#define RAMBLOCK_INFO_MAX_LEN                     256
     25
     26/*
     27 * Minimum RAMBlock size to sample, in megabytes.
     28 */
     29#define MIN_RAMBLOCK_SIZE                         128
     30
     31/*
     32 * Take 1s as minimum time for calculation duration
     33 */
     34#define MIN_FETCH_DIRTYRATE_TIME_SEC              1
     35#define MAX_FETCH_DIRTYRATE_TIME_SEC              60
     36
     37/*
     38 * Take 1/16 pages in 1G as the maxmum sample page count
     39 */
     40#define MIN_SAMPLE_PAGE_COUNT                     128
     41#define MAX_SAMPLE_PAGE_COUNT                     16384
     42
     43struct DirtyRateConfig {
     44    uint64_t sample_pages_per_gigabytes; /* sample pages per GB */
     45    int64_t sample_period_seconds; /* time duration between two sampling */
     46};
     47
     48/*
     49 * Store dirtypage info for each ramblock.
     50 */
     51struct RamblockDirtyInfo {
     52    char idstr[RAMBLOCK_INFO_MAX_LEN]; /* idstr for each ramblock */
     53    uint8_t *ramblock_addr; /* base address of ramblock we measure */
     54    uint64_t ramblock_pages; /* ramblock size in TARGET_PAGE_SIZE */
     55    uint64_t *sample_page_vfn; /* relative offset address for sampled page */
     56    uint64_t sample_pages_count; /* count of sampled pages */
     57    uint64_t sample_dirty_count; /* count of dirty pages we measure */
     58    uint32_t *hash_result; /* array of hash result for sampled pages */
     59};
     60
     61/*
     62 * Store calculation statistics for each measure.
     63 */
     64struct DirtyRateStat {
     65    uint64_t total_dirty_samples; /* total dirty sampled page */
     66    uint64_t total_sample_count; /* total sampled pages */
     67    uint64_t total_block_mem_MB; /* size of total sampled pages in MB */
     68    int64_t dirty_rate; /* dirty rate in MB/s */
     69    int64_t start_time; /* calculation start time in units of second */
     70    int64_t calc_time; /* time duration of two sampling in units of second */
     71    uint64_t sample_pages; /* sample pages per GB */
     72};
     73
     74void *get_dirtyrate_thread(void *arg);
     75#endif