6e43353f10
See docs/specs/vmcoreinfo.txt for details. "etc/vmcoreinfo" fw_cfg entry is added when using "-device vmcoreinfo". Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* Virtual Machine coreinfo device
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*
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* Copyright (C) 2017 Red Hat, Inc.
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*
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* Authors: Marc-André Lureau <marcandre.lureau@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef VMCOREINFO_H
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#define VMCOREINFO_H
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#include "hw/qdev.h"
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#define VMCOREINFO_DEVICE "vmcoreinfo"
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#define VMCOREINFO(obj) OBJECT_CHECK(VMCoreInfoState, (obj), VMCOREINFO_DEVICE)
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#define VMCOREINFO_FORMAT_NONE 0x0
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#define VMCOREINFO_FORMAT_ELF 0x1
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/* all fields are little-endian */
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typedef struct FWCfgVMCoreInfo {
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uint16_t host_format; /* set on reset */
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uint16_t guest_format;
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uint32_t size;
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uint64_t paddr;
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} QEMU_PACKED FWCfgVMCoreInfo;
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typedef struct VMCoreInfoState {
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DeviceClass parent_obj;
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bool has_vmcoreinfo;
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FWCfgVMCoreInfo vmcoreinfo;
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} VMCoreInfoState;
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/* returns NULL unless there is exactly one device */
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static inline VMCoreInfoState *vmcoreinfo_find(void)
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{
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Object *o = object_resolve_path_type("", VMCOREINFO_DEVICE, NULL);
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return o ? VMCOREINFO(o) : NULL;
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}
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#endif
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