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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write-threshold.h (1297B)

      1/*
      2 * QEMU System Emulator block write threshold notification
      3 *
      4 * Copyright Red Hat, Inc. 2014
      5 *
      6 * Authors:
      7 *  Francesco Romani <fromani@redhat.com>
      8 *
      9 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
     10 * See the COPYING.LIB file in the top-level directory.
     11 */
     12
     13#ifndef BLOCK_WRITE_THRESHOLD_H
     14#define BLOCK_WRITE_THRESHOLD_H
     15
     16#include "qemu/typedefs.h"
     17
     18/*
     19 * bdrv_write_threshold_set:
     20 *
     21 * Set the write threshold for block devices, in bytes.
     22 * Notify when a write exceeds the threshold, meaning the device
     23 * is becoming full, so it can be transparently resized.
     24 * To be used with thin-provisioned block devices.
     25 *
     26 * Use threshold_bytes == 0 to disable.
     27 */
     28void bdrv_write_threshold_set(BlockDriverState *bs, uint64_t threshold_bytes);
     29
     30/*
     31 * bdrv_write_threshold_get
     32 *
     33 * Get the configured write threshold, in bytes.
     34 * Zero means no threshold configured.
     35 */
     36uint64_t bdrv_write_threshold_get(const BlockDriverState *bs);
     37
     38/*
     39 * bdrv_write_threshold_check_write
     40 *
     41 * Check whether the specified request exceeds the write threshold.
     42 * If so, send a corresponding event and disable write threshold checking.
     43 */
     44void bdrv_write_threshold_check_write(BlockDriverState *bs, int64_t offset,
     45                                      int64_t bytes);
     46
     47#endif