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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virtio-mem.h (2197B)

      1/*
      2 * Virtio MEM device
      3 *
      4 * Copyright (C) 2020 Red Hat, Inc.
      5 *
      6 * Authors:
      7 *  David Hildenbrand <david@redhat.com>
      8 *
      9 * This work is licensed under the terms of the GNU GPL, version 2.
     10 * See the COPYING file in the top-level directory.
     11 */
     12
     13#ifndef HW_VIRTIO_MEM_H
     14#define HW_VIRTIO_MEM_H
     15
     16#include "standard-headers/linux/virtio_mem.h"
     17#include "hw/virtio/virtio.h"
     18#include "qapi/qapi-types-misc.h"
     19#include "sysemu/hostmem.h"
     20#include "qom/object.h"
     21
     22#define TYPE_VIRTIO_MEM "virtio-mem"
     23
     24OBJECT_DECLARE_TYPE(VirtIOMEM, VirtIOMEMClass,
     25                    VIRTIO_MEM)
     26
     27#define VIRTIO_MEM_MEMDEV_PROP "memdev"
     28#define VIRTIO_MEM_NODE_PROP "node"
     29#define VIRTIO_MEM_SIZE_PROP "size"
     30#define VIRTIO_MEM_REQUESTED_SIZE_PROP "requested-size"
     31#define VIRTIO_MEM_BLOCK_SIZE_PROP "block-size"
     32#define VIRTIO_MEM_ADDR_PROP "memaddr"
     33
     34struct VirtIOMEM {
     35    VirtIODevice parent_obj;
     36
     37    /* guest -> host request queue */
     38    VirtQueue *vq;
     39
     40    /* bitmap used to track unplugged memory */
     41    int32_t bitmap_size;
     42    unsigned long *bitmap;
     43
     44    /* assigned memory backend and memory region */
     45    HostMemoryBackend *memdev;
     46
     47    /* NUMA node */
     48    uint32_t node;
     49
     50    /* assigned address of the region in guest physical memory */
     51    uint64_t addr;
     52
     53    /* usable region size (<= region_size) */
     54    uint64_t usable_region_size;
     55
     56    /* actual size (how much the guest plugged) */
     57    uint64_t size;
     58
     59    /* requested size */
     60    uint64_t requested_size;
     61
     62    /* block size and alignment */
     63    uint64_t block_size;
     64
     65    /* notifiers to notify when "size" changes */
     66    NotifierList size_change_notifiers;
     67
     68    /* don't migrate unplugged memory */
     69    NotifierWithReturn precopy_notifier;
     70
     71    /* listeners to notify on plug/unplug activity. */
     72    QLIST_HEAD(, RamDiscardListener) rdl_list;
     73};
     74
     75struct VirtIOMEMClass {
     76    /* private */
     77    VirtIODevice parent;
     78
     79    /* public */
     80    void (*fill_device_info)(const VirtIOMEM *vmen, VirtioMEMDeviceInfo *vi);
     81    MemoryRegion *(*get_memory_region)(VirtIOMEM *vmem, Error **errp);
     82    void (*add_size_change_notifier)(VirtIOMEM *vmem, Notifier *notifier);
     83    void (*remove_size_change_notifier)(VirtIOMEM *vmem, Notifier *notifier);
     84};
     85
     86#endif