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hv: deny the launch of VM if pass-thru PIO bar isn't identical mapping

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In current design, when pass-thru dev,
for the PIO bar, need to ensure the guest PIO start address
equals to host PIO start address.
Then set the VMCS io bitmap to pass-thru the corresponding
port io to guest for performance.

ACRN-DM and acrn-config should ensure the identical mapping of PIO bar.
If ACRN-DM or acrn-config failed to achieve this,
we should deny the launch of VM

Tracked-On: #6508

Signed-off-by: Liu,Junming <junming.liu@intel.com>
Reviewed-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Fei Li <fei1.li@intel.com>
This commit is contained in:
Liu,Junming
2021-09-23 15:18:38 +00:00
committed by wenlingz
parent 275a274673
commit 4105ca2cb4
5 changed files with 93 additions and 48 deletions
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57
hypervisor/arch/x86/guest/vm.c
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@@ -599,34 +599,37 @@ int32_t create_vm(uint16_t vm_id, uint64_t pcpu_bitmap, struct acrn_vm_config *v
passthrough_smbios(vm, get_acrn_boot_info());
#endif
init_vpci(vm);
enable_iommu();
/* Create virtual uart;*/
init_legacy_vuarts(vm, vm_config->vuart);
register_reset_port_handler(vm);
/* vpic wire_mode default is INTR */
vm->wire_mode = VPIC_WIRE_INTR;
/* Init full emulated vIOAPIC instance:
* Present a virtual IOAPIC to guest, as a placeholder interrupt controller,
* even if the guest uses PT LAPIC. This is to satisfy the guest OSes,
* in some cases, though the functionality of vIOAPIC doesn't work.
*/
vioapic_init(vm);
/* Populate return VM handle */
*rtn_vm = vm;
vm->sw.io_shared_page = NULL;
if ((vm_config->load_order == POST_LAUNCHED_VM) && ((vm_config->guest_flags & GUEST_FLAG_IO_COMPLETION_POLLING) != 0U)) {
/* enable IO completion polling mode per its guest flags in vm_config. */
vm->sw.is_polling_ioreq = true;
}
status = set_vcpuid_entries(vm);
status = init_vpci(vm);
if (status == 0) {
vm->state = VM_CREATED;
enable_iommu();
/* Create virtual uart;*/
init_legacy_vuarts(vm, vm_config->vuart);
register_reset_port_handler(vm);
/* vpic wire_mode default is INTR */
vm->wire_mode = VPIC_WIRE_INTR;
/* Init full emulated vIOAPIC instance:
* Present a virtual IOAPIC to guest, as a placeholder interrupt controller,
* even if the guest uses PT LAPIC. This is to satisfy the guest OSes,
* in some cases, though the functionality of vIOAPIC doesn't work.
*/
vioapic_init(vm);
/* Populate return VM handle */
*rtn_vm = vm;
vm->sw.io_shared_page = NULL;
if ((vm_config->load_order == POST_LAUNCHED_VM)
&& ((vm_config->guest_flags & GUEST_FLAG_IO_COMPLETION_POLLING) != 0U)) {
/* enable IO completion polling mode per its guest flags in vm_config. */
vm->sw.is_polling_ioreq = true;
}
status = set_vcpuid_entries(vm);
if (status == 0) {
vm->state = VM_CREATED;
}
}
}