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