vmcoreinfo.c (4bd797af6f5bc9f7114030695716d199dceafa6e) vmcoreinfo.c (5be5df720e600502ff530cee51a7ac0622f62f6f)
1/*
2 * Virtual Machine coreinfo device
3 *
4 * Copyright (C) 2017 Red Hat, Inc.
5 *
6 * Authors: Marc-André Lureau <marcandre.lureau@redhat.com>
7 *
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.

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14#include "hw/nvram/fw_cfg.h"
15#include "hw/misc/vmcoreinfo.h"
16
17static void fw_cfg_vmci_write(void *dev, off_t offset, size_t len)
18{
19 VMCoreInfoState *s = VMCOREINFO(dev);
20
21 s->has_vmcoreinfo = offset == 0 && len == sizeof(s->vmcoreinfo)
1/*
2 * Virtual Machine coreinfo device
3 *
4 * Copyright (C) 2017 Red Hat, Inc.
5 *
6 * Authors: Marc-André Lureau <marcandre.lureau@redhat.com>
7 *
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.

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14#include "hw/nvram/fw_cfg.h"
15#include "hw/misc/vmcoreinfo.h"
16
17static void fw_cfg_vmci_write(void *dev, off_t offset, size_t len)
18{
19 VMCoreInfoState *s = VMCOREINFO(dev);
20
21 s->has_vmcoreinfo = offset == 0 && len == sizeof(s->vmcoreinfo)
22 && s->vmcoreinfo.guest_format != VMCOREINFO_FORMAT_NONE;
22 && s->vmcoreinfo.guest_format != FW_CFG_VMCOREINFO_FORMAT_NONE;
23}
24
25static void vmcoreinfo_reset(void *dev)
26{
27 VMCoreInfoState *s = VMCOREINFO(dev);
28
29 s->has_vmcoreinfo = false;
30 memset(&s->vmcoreinfo, 0, sizeof(s->vmcoreinfo));
23}
24
25static void vmcoreinfo_reset(void *dev)
26{
27 VMCoreInfoState *s = VMCOREINFO(dev);
28
29 s->has_vmcoreinfo = false;
30 memset(&s->vmcoreinfo, 0, sizeof(s->vmcoreinfo));
31 s->vmcoreinfo.host_format = cpu_to_le16(VMCOREINFO_FORMAT_ELF);
31 s->vmcoreinfo.host_format = cpu_to_le16(FW_CFG_VMCOREINFO_FORMAT_ELF);
32}
33
34static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
35{
36 VMCoreInfoState *s = VMCOREINFO(dev);
37 FWCfgState *fw_cfg = fw_cfg_find();
38 /* for gdb script dump-guest-memory.py */
39 static VMCoreInfoState * volatile vmcoreinfo_state G_GNUC_UNUSED;

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48 }
49
50 if (!fw_cfg || !fw_cfg->dma_enabled) {
51 error_setg(errp, "%s device requires fw_cfg with DMA",
52 VMCOREINFO_DEVICE);
53 return;
54 }
55
32}
33
34static void vmcoreinfo_realize(DeviceState *dev, Error **errp)
35{
36 VMCoreInfoState *s = VMCOREINFO(dev);
37 FWCfgState *fw_cfg = fw_cfg_find();
38 /* for gdb script dump-guest-memory.py */
39 static VMCoreInfoState * volatile vmcoreinfo_state G_GNUC_UNUSED;

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48 }
49
50 if (!fw_cfg || !fw_cfg->dma_enabled) {
51 error_setg(errp, "%s device requires fw_cfg with DMA",
52 VMCOREINFO_DEVICE);
53 return;
54 }
55
56 fw_cfg_add_file_callback(fw_cfg, "etc/vmcoreinfo",
56 fw_cfg_add_file_callback(fw_cfg, FW_CFG_VMCOREINFO_FILENAME,
57 NULL, fw_cfg_vmci_write, s,
58 &s->vmcoreinfo, sizeof(s->vmcoreinfo), false);
59
60 qemu_register_reset(vmcoreinfo_reset, dev);
61 vmcoreinfo_state = s;
62}
63
64static const VMStateDescription vmstate_vmcoreinfo = {

--- 36 unchanged lines hidden --- 		57 NULL, fw_cfg_vmci_write, s,
58 &s->vmcoreinfo, sizeof(s->vmcoreinfo), false);
59
60 qemu_register_reset(vmcoreinfo_reset, dev);
61 vmcoreinfo_state = s;
62}
63
64static const VMStateDescription vmstate_vmcoreinfo = {

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