1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Type definitions for the Microsoft Hypervisor. 4 */ 5 #ifndef _HV_HVGDK_EXT_H 6 #define _HV_HVGDK_EXT_H 7 8 #include "hvgdk_mini.h" 9 10 /* Extended hypercalls */ 11 #define HV_EXT_CALL_QUERY_CAPABILITIES 0x8001 12 #define HV_EXT_CALL_MEMORY_HEAT_HINT 0x8003 13 14 /* Extended hypercalls */ 15 enum { /* HV_EXT_CALL */ 16 HV_EXTCALL_QUERY_CAPABILITIES = 0x8001, 17 HV_EXTCALL_MEMORY_HEAT_HINT = 0x8003, 18 }; 19 20 /* HV_EXT_OUTPUT_QUERY_CAPABILITIES */ 21 #define HV_EXT_CAPABILITY_MEMORY_COLD_DISCARD_HINT BIT(8) 22 23 enum { /* HV_EXT_MEMORY_HEAT_HINT_TYPE */ 24 HV_EXTMEM_HEAT_HINT_COLD = 0, 25 HV_EXTMEM_HEAT_HINT_HOT = 1, 26 HV_EXTMEM_HEAT_HINT_COLD_DISCARD = 2, 27 HV_EXTMEM_HEAT_HINT_MAX 28 }; 29 30 /* 31 * The whole argument should fit in a page to be able to pass to the hypervisor 32 * in one hypercall. 33 */ 34 #define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES \ 35 ((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \ 36 sizeof(union hv_gpa_page_range)) 37 38 /* HvExtCallMemoryHeatHint hypercall */ 39 #define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD 2 40 struct hv_memory_hint { /* HV_EXT_INPUT_MEMORY_HEAT_HINT */ 41 u64 heat_type : 2; /* HV_EXTMEM_HEAT_HINT_* */ 42 u64 reserved : 62; 43 union hv_gpa_page_range ranges[]; 44 } __packed; 45 46 #endif /* _HV_HVGDK_EXT_H */ 47