hv: vm_config: add epc info in vm config

Add EPC information in vm configuration structure.
EPC information contains the EPC base and size allocated to a VM.

Tracked-On: #3179
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

Author: binbinwu1

hypervisor/arch/x86/configs/vm_config.c

@@ -7,6 +7,7 @@
 #include <vm_config.h>
 #include <logmsg.h>
 #include <cat.h>
+#include <pgtable.h>
 
 /*
  * @pre vm_id < CONFIG_MAX_VM_NUM
@@ -89,6 +90,8 @@ bool sanitize_vm_config(void)
 			} else if (((vm_config->guest_flags & GUEST_FLAG_LAPIC_PASSTHROUGH) != 0U)
 					&& ((vm_config->guest_flags & GUEST_FLAG_RT) == 0U)) {
 				ret = false;
+			}else if (vm_config->epc.size != 0UL) {
+				ret = false;
 			} else {
 				pre_launch_pcpu_bitmap |= vm_config->pcpu_bitmap;
 			}
@@ -119,6 +122,10 @@ bool sanitize_vm_config(void)
 			}
 		}
 
+		if (((vm_config->epc.size | vm_config->epc.base) & ~PAGE_MASK) != 0UL) {
+			ret = false;
+		}
+
 		if (ret) {
 			/* make sure no identical UUID in following VM configurations */
 			ret = check_vm_uuid_collision(vm_id);

hypervisor/include/arch/x86/vm_config.h

@@ -13,6 +13,7 @@
 #include <acrn_common.h>
 #include <mptable.h>
 #include <vm_configurations.h>
+#include <sgx.h>
 
 #define PLUG_CPU(n)		(1U << (n))
 #define MAX_VUART_NUM_PER_VM	2U
@@ -84,6 +85,7 @@ struct acrn_vm_config {
 							 * We could add more guest flags in future;
 							 */
 	struct acrn_vm_mem_config memory;		/* memory configuration of VM */
+	struct epc_section epc;				/* EPC memory configuration of VM */
 	uint16_t pci_ptdev_num;				/* indicate how many PCI PT devices in VM */
 	struct acrn_vm_pci_ptdev_config *pci_ptdevs;	/* point to PCI PT devices BDF list */
 	struct acrn_vm_os_config os_config;		/* OS information the VM */