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https://github.com/izzy2lost/xemu.git
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Zhenzhong DuanandCédric Le Goater
5a78db7f80
If there are multiple containers and unmap-all fails for some of them, we
need to remap vaddr for the other containers for which unmap-all succeeded.
When ram discard is enabled, we should only remap populated parts in a
section instead of the whole section.
Fixes: eba1f657cb ("vfio/container: recover from unmap-all-vaddr failure")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Steven Sistare <steven.sistare@oracle.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250928085432.40107-2-zhenzhong.duan@intel.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
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* VFIO CPR
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*
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* Copyright (c) 2025 Oracle and/or its affiliates.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef HW_VFIO_VFIO_CPR_H
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#define HW_VFIO_VFIO_CPR_H
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#include "migration/misc.h"
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#include "system/memory.h"
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struct VFIOLegacyContainer;
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struct VFIOContainer;
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struct VFIOGroup;
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struct VFIODevice;
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struct VFIOPCIDevice;
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struct VFIOIOMMUFDContainer;
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struct IOMMUFDBackend;
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typedef int (*dma_map_fn)(const struct VFIOContainer *bcontainer,
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hwaddr iova, uint64_t size, void *vaddr,
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bool readonly, MemoryRegion *mr);
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typedef struct VFIOContainerCPR {
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Error *blocker;
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bool vaddr_unmapped;
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NotifierWithReturn transfer_notifier;
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MemoryListener remap_listener;
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} VFIOContainerCPR;
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typedef struct VFIODeviceCPR {
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Error *mdev_blocker;
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Error *id_blocker;
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uint32_t hwpt_id;
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uint32_t ioas_id;
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} VFIODeviceCPR;
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typedef struct VFIOPCICPR {
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NotifierWithReturn transfer_notifier;
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} VFIOPCICPR;
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bool vfio_legacy_cpr_register_container(struct VFIOLegacyContainer *container,
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Error **errp);
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void vfio_legacy_cpr_unregister_container(
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struct VFIOLegacyContainer *container);
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int vfio_cpr_reboot_notifier(NotifierWithReturn *notifier, MigrationEvent *e,
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Error **errp);
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bool vfio_iommufd_cpr_register_container(struct VFIOIOMMUFDContainer *container,
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Error **errp);
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void vfio_iommufd_cpr_unregister_container(
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struct VFIOIOMMUFDContainer *container);
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bool vfio_iommufd_cpr_register_iommufd(struct IOMMUFDBackend *be, Error **errp);
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void vfio_iommufd_cpr_unregister_iommufd(struct IOMMUFDBackend *be);
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void vfio_iommufd_cpr_register_device(struct VFIODevice *vbasedev);
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void vfio_iommufd_cpr_unregister_device(struct VFIODevice *vbasedev);
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void vfio_cpr_load_device(struct VFIODevice *vbasedev);
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int vfio_cpr_group_get_device_fd(int d, const char *name);
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bool vfio_cpr_container_match(struct VFIOLegacyContainer *container,
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struct VFIOGroup *group, int fd);
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void vfio_cpr_giommu_remap(struct VFIOContainer *bcontainer,
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MemoryRegionSection *section);
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bool vfio_cpr_ram_discard_replay_populated(
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struct VFIOContainer *bcontainer, MemoryRegionSection *section);
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void vfio_cpr_save_vector_fd(struct VFIOPCIDevice *vdev, const char *name,
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int nr, int fd);
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int vfio_cpr_load_vector_fd(struct VFIOPCIDevice *vdev, const char *name,
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int nr);
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void vfio_cpr_delete_vector_fd(struct VFIOPCIDevice *vdev, const char *name,
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int nr);
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extern const VMStateDescription vfio_cpr_pci_vmstate;
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extern const VMStateDescription vmstate_cpr_vfio_devices;
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void vfio_cpr_add_kvm_notifier(void);
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void vfio_cpr_pci_register_device(struct VFIOPCIDevice *vdev);
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void vfio_cpr_pci_unregister_device(struct VFIOPCIDevice *vdev);
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#endif /* HW_VFIO_VFIO_CPR_H */
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