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hv: Remove need for init_fallback_iommu_domain and fallback_iommu_domain

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In the presence of SOS, ACRN uses fallback_iommu_domain which is the same
used by SOS, to assign domain to devices during ACRN init. Also it uses
fallback_iommu_domain when DM requests ACRN to remove device from UOS domain.
This patch changes the design of assign/remove_iommu_device to avoid the
concept of fallback_iommu_domain and its setup. This way ACRN can commonly
treat pre-launched VMs bringup w.r.t. IOMMU domain creation.

Tracked-On: #2965
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Sainath Grandhi
2019-04-13 11:57:25 -07:00
committed by ACRN System Integration
parent 948d58fb9c
commit 824caf8ce0
7 changed files with 40 additions and 116 deletions
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4
hypervisor/common/hypercall.c
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@@ -890,7 +890,7 @@ int32_t hcall_assign_ptdev(struct acrn_vm *vm, uint16_t vmid, uint64_t param)
}
}
if (bdf_valid && iommu_valid) {
ret = assign_pt_device(target_vm->iommu,
ret = move_pt_device(vm->iommu, target_vm->iommu,
(uint8_t)(bdf >> 8U), (uint8_t)(bdf & 0xffU));
}
} else {
@@ -934,7 +934,7 @@ int32_t hcall_deassign_ptdev(struct acrn_vm *vm, uint16_t vmid, uint64_t param)
}
if (bdf_valid) {
ret = unassign_pt_device(target_vm->iommu,
ret = move_pt_device(target_vm->iommu, vm->iommu,
(uint8_t)(bdf >> 8U), (uint8_t)(bdf & 0xffU));
}
}