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igvm: make igvm-cfg object resettable

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Add TYPE_RESETTABLE_INTERFACE to interfaces.  Register callbacks for the
reset phases.  Add trace points for logging and debugging.  No
functional change, that will come in followup patches.

Reviewed-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20260126123755.357378-3-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann
2026-01-26 13:37:52 +01:00
parent acd47d9928
commit 0a158a4148
3 changed files with 41 additions and 1 deletions
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35
backends/igvm-cfg.c
View File

@@ -17,6 +17,8 @@
#include "system/reset.h"
#include "qom/object_interfaces.h"
#include "trace.h"
static char *get_igvm(Object *obj, Error **errp)
{
IgvmCfg *igvm = IGVM_CFG(obj);
@@ -30,24 +32,55 @@ static void set_igvm(Object *obj, const char *value, Error **errp)
igvm->filename = g_strdup(value);
}
static ResettableState *igvm_reset_state(Object *obj)
{
IgvmCfg *igvm = IGVM_CFG(obj);
return &igvm->reset_state;
}
static void igvm_reset_enter(Object *obj, ResetType type)
{
trace_igvm_reset_enter(type);
}
static void igvm_reset_hold(Object *obj, ResetType type)
{
trace_igvm_reset_hold(type);
}
static void igvm_reset_exit(Object *obj, ResetType type)
{
trace_igvm_reset_exit(type);
}
OBJECT_DEFINE_TYPE_WITH_INTERFACES(IgvmCfg, igvm_cfg, IGVM_CFG, OBJECT,
{ TYPE_USER_CREATABLE }, { NULL })
{ TYPE_USER_CREATABLE },
{ TYPE_RESETTABLE_INTERFACE },
{ NULL })
static void igvm_cfg_class_init(ObjectClass *oc, const void *data)
{
IgvmCfgClass *igvmc = IGVM_CFG_CLASS(oc);
ResettableClass *rc = RESETTABLE_CLASS(oc);
object_class_property_add_str(oc, "file", get_igvm, set_igvm);
object_class_property_set_description(oc, "file",
"Set the IGVM filename to use");
igvmc->process = qigvm_process_file;
rc->get_state = igvm_reset_state;
rc->phases.enter = igvm_reset_enter;
rc->phases.hold = igvm_reset_hold;
rc->phases.exit = igvm_reset_exit;
}
static void igvm_cfg_init(Object *obj)
{
qemu_register_resettable(obj);
}
static void igvm_cfg_finalize(Object *obj)
{
qemu_unregister_resettable(obj);
}

5
backends/trace-events
View File

@@ -23,3 +23,8 @@ iommufd_backend_get_dirty_bitmap(int iommufd, uint32_t hwpt_id, uint64_t iova, u
iommufd_backend_invalidate_cache(int iommufd, uint32_t id, uint32_t data_type, uint32_t entry_len, uint32_t entry_num, uint32_t done_num, uint64_t data_ptr, int ret) " iommufd=%d id=%u data_type=%u entry_len=%u entry_num=%u done_num=%u data_ptr=0x%"PRIx64" (%d)"
iommufd_backend_alloc_viommu(int iommufd, uint32_t dev_id, uint32_t type, uint32_t hwpt_id, uint32_t viommu_id, int ret) " iommufd=%d type=%u dev_id=%u hwpt_id=%u viommu_id=%u (%d)"
iommufd_backend_alloc_vdev(int iommufd, uint32_t dev_id, uint32_t viommu_id, uint64_t virt_id, uint32_t vdev_id, int ret) " iommufd=%d dev_id=%u viommu_id=%u virt_id=0x%"PRIx64" vdev_id=%u (%d)"
# igvm-cfg.c
igvm_reset_enter(int type) "type=%u"
igvm_reset_hold(int type) "type=%u"
igvm_reset_exit(int type) "type=%u"