1 files changed, 126 insertions, 0 deletions
diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
new file mode 100644
index 000000000..6f4737d50
--- /dev/null
+++ b/include/linux/kvm_types.h
@@ -0,0 +1,126 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __KVM_TYPES_H__
+#define __KVM_TYPES_H__
+
+struct kvm;
+struct kvm_async_pf;
+struct kvm_device_ops;
+struct kvm_interrupt;
+struct kvm_irq_routing_table;
+struct kvm_memory_slot;
+struct kvm_one_reg;
+struct kvm_run;
+struct kvm_userspace_memory_region;
+struct kvm_vcpu;
+struct kvm_vcpu_init;
+struct kvm_memslots;
+
+enum kvm_mr_change;
+
+#include <linux/bits.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+#include <linux/spinlock_types.h>
+
+#include <asm/kvm_types.h>
+
+/*
+ * Address types:
+ *
+ *  gva - guest virtual address
+ *  gpa - guest physical address
+ *  gfn - guest frame number
+ *  hva - host virtual address
+ *  hpa - host physical address
+ *  hfn - host frame number
+ */
+
+typedef unsigned long  gva_t;
+typedef u64            gpa_t;
+typedef u64            gfn_t;
+
+#define INVALID_GPA	(~(gpa_t)0)
+
+typedef unsigned long  hva_t;
+typedef u64            hpa_t;
+typedef u64            hfn_t;
+
+typedef hfn_t kvm_pfn_t;
+
+enum pfn_cache_usage {
+	KVM_GUEST_USES_PFN = BIT(0),
+	KVM_HOST_USES_PFN  = BIT(1),
+	KVM_GUEST_AND_HOST_USE_PFN = KVM_GUEST_USES_PFN | KVM_HOST_USES_PFN,
+};
+
+struct gfn_to_hva_cache {
+	u64 generation;
+	gpa_t gpa;
+	unsigned long hva;
+	unsigned long len;
+	struct kvm_memory_slot *memslot;
+};
+
+struct gfn_to_pfn_cache {
+	u64 generation;
+	gpa_t gpa;
+	unsigned long uhva;
+	struct kvm_memory_slot *memslot;
+	struct kvm *kvm;
+	struct kvm_vcpu *vcpu;
+	struct list_head list;
+	rwlock_t lock;
+	struct mutex refresh_lock;
+	void *khva;
+	kvm_pfn_t pfn;
+	enum pfn_cache_usage usage;
+	bool active;
+	bool valid;
+};
+
+#ifdef KVM_ARCH_NR_OBJS_PER_MEMORY_CACHE
+/*
+ * Memory caches are used to preallocate memory ahead of various MMU flows,
+ * e.g. page fault handlers.  Gracefully handling allocation failures deep in
+ * MMU flows is problematic, as is triggering reclaim, I/O, etc... while
+ * holding MMU locks.  Note, these caches act more like prefetch buffers than
+ * classical caches, i.e. objects are not returned to the cache on being freed.
+ *
+ * The @capacity field and @objects array are lazily initialized when the cache
+ * is topped up (__kvm_mmu_topup_memory_cache()).
+ */
+struct kvm_mmu_memory_cache {
+	gfp_t gfp_zero;
+	gfp_t gfp_custom;
+	struct kmem_cache *kmem_cache;
+	int capacity;
+	int nobjs;
+	void **objects;
+};
+#endif
+
+#define HALT_POLL_HIST_COUNT			32
+
+struct kvm_vm_stat_generic {
+	u64 remote_tlb_flush;
+	u64 remote_tlb_flush_requests;
+};
+
+struct kvm_vcpu_stat_generic {
+	u64 halt_successful_poll;
+	u64 halt_attempted_poll;
+	u64 halt_poll_invalid;
+	u64 halt_wakeup;
+	u64 halt_poll_success_ns;
+	u64 halt_poll_fail_ns;
+	u64 halt_wait_ns;
+	u64 halt_poll_success_hist[HALT_POLL_HIST_COUNT];
+	u64 halt_poll_fail_hist[HALT_POLL_HIST_COUNT];
+	u64 halt_wait_hist[HALT_POLL_HIST_COUNT];
+	u64 blocking;
+};
+
+#define KVM_STATS_NAME_SIZE	48
+
+#endif /* __KVM_TYPES_H__ */