Add hv headers directly in the repo

hv-headers/hvgdk.h

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Type definitions for the hypervisor guest interface.
+ */
+#ifndef _HVGDK_H
+#define _HVGDK_H
+
+#include "hvgdk_mini.h"
+
+#define HVGDK_H_VERSION			(25125)
+
+#if defined(__x86_64__)
+
+enum hv_unimplemented_msr_action {
+	HV_UNIMPLEMENTED_MSR_ACTION_FAULT = 0,
+	HV_UNIMPLEMENTED_MSR_ACTION_IGNORE_WRITE_READ_ZERO = 1,
+	HV_UNIMPLEMENTED_MSR_ACTION_COUNT = 2,
+};
+
+#endif
+
+#endif /* _HVGDK_H */

hv-headers/hvgdk_ext.h

@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI_HV_HVGDK_EXT_H
+#define _UAPI_HV_HVGDK_EXT_H
+
+#include "hvgdk_mini.h"
+
+#define HVGDK_EXT_VERSION		(25294)
+
+/* Extended hypercalls */
+#define HV_EXT_CALL_QUERY_CAPABILITIES		0x8001
+#define HV_EXT_CALL_MEMORY_HEAT_HINT		0x8003
+
+/* Extended hypercalls */
+enum {		/* HV_EXT_CALL */
+	HV_EXTCALL_QUERY_CAPABILITIES = 0x8001,
+	HV_EXTCALL_MEMORY_HEAT_HINT   = 0x8003,
+};
+
+/* HV_EXT_OUTPUT_QUERY_CAPABILITIES */
+#define HV_EXT_CAPABILITY_MEMORY_COLD_DISCARD_HINT BIT(8)
+
+enum {		/* HV_EXT_MEMORY_HEAT_HINT_TYPE */
+	HV_EXTMEM_HEAT_HINT_COLD = 0,
+	HV_EXTMEM_HEAT_HINT_HOT = 1,
+	HV_EXTMEM_HEAT_HINT_COLD_DISCARD = 2,
+	HV_EXTMEM_HEAT_HINT_MAX
+};
+
+/*
+ * The whole argument should fit in a page to be able to pass to the hypervisor
+ * in one hypercall.
+ */
+#define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES  \
+	((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \
+		sizeof(union hv_gpa_page_range))
+
+/* HvExtCallMemoryHeatHint hypercall */
+#define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD	2
+struct hv_memory_hint {		/* HV_EXT_INPUT_MEMORY_HEAT_HINT */
+	__u64 heat_type:2;	/* HV_EXTMEM_HEAT_HINT_* */
+	__u64 reserved:62;
+	union hv_gpa_page_range ranges[];
+} __packed;
+
+#endif /* _UAPI_HV_HVGDK_EXT_H */