1 /* 2 * QEMU Confidential Guest support 3 * 4 * Copyright Red Hat. 5 * 6 * Authors: 7 * David Gibson <david@gibson.dropbear.id.au> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or 10 * later. See the COPYING file in the top-level directory. 11 * 12 */ 13 14 #include "qemu/osdep.h" 15 16 #include "system/confidential-guest-support.h" 17 #include "qapi/error.h" 18 19 OBJECT_DEFINE_ABSTRACT_TYPE(ConfidentialGuestSupport, 20 confidential_guest_support, 21 CONFIDENTIAL_GUEST_SUPPORT, 22 OBJECT) 23 24 static bool check_support(ConfidentialGuestPlatformType platform, 25 uint16_t platform_version, uint8_t highest_vtl, 26 uint64_t shared_gpa_boundary) 27 { 28 /* Default: no support. */ 29 return false; 30 } 31 32 static int set_guest_state(hwaddr gpa, uint8_t *ptr, uint64_t len, 33 ConfidentialGuestPageType memory_type, 34 uint16_t cpu_index, Error **errp) 35 { 36 error_setg(errp, 37 "Setting confidential guest state is not supported for this platform"); 38 return -1; 39 } 40 41 static int get_mem_map_entry(int index, ConfidentialGuestMemoryMapEntry *entry, 42 Error **errp) 43 { 44 error_setg( 45 errp, 46 "Obtaining the confidential guest memory map is not supported for this platform"); 47 return -1; 48 } 49 50 static void confidential_guest_support_class_init(ObjectClass *oc, 51 const void *data) 52 { 53 ConfidentialGuestSupportClass *cgsc = CONFIDENTIAL_GUEST_SUPPORT_CLASS(oc); 54 cgsc->check_support = check_support; 55 cgsc->set_guest_state = set_guest_state; 56 cgsc->get_mem_map_entry = get_mem_map_entry; 57 } 58 59 static void confidential_guest_support_init(Object *obj) 60 { 61 } 62 63 static void confidential_guest_support_finalize(Object *obj) 64 { 65 } 66