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96316a0670
Refactor KVM's exported/external page-track, a.k.a. write-track, APIs to take only the gfn and do the required memslot lookup in KVM proper. Forcing users of the APIs to get the memslot unnecessarily bleeds KVM internals into KVMGT and complicates usage of the APIs. No functional change intended. Reviewed-by: Yan Zhao <yan.y.zhao@intel.com> Tested-by: Yongwei Ma <yongwei.ma@intel.com> Link: https://lore.kernel.org/r/20230729013535.1070024-28-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __KVM_X86_PAGE_TRACK_H
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#define __KVM_X86_PAGE_TRACK_H
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#include <linux/kvm_host.h>
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#include <asm/kvm_page_track.h>
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bool kvm_page_track_write_tracking_enabled(struct kvm *kvm);
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int kvm_page_track_write_tracking_alloc(struct kvm_memory_slot *slot);
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void kvm_page_track_free_memslot(struct kvm_memory_slot *slot);
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int kvm_page_track_create_memslot(struct kvm *kvm,
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struct kvm_memory_slot *slot,
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unsigned long npages);
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void __kvm_write_track_add_gfn(struct kvm *kvm, struct kvm_memory_slot *slot,
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gfn_t gfn);
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void __kvm_write_track_remove_gfn(struct kvm *kvm,
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struct kvm_memory_slot *slot, gfn_t gfn);
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bool kvm_gfn_is_write_tracked(struct kvm *kvm,
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const struct kvm_memory_slot *slot, gfn_t gfn);
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#ifdef CONFIG_KVM_EXTERNAL_WRITE_TRACKING
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int kvm_page_track_init(struct kvm *kvm);
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void kvm_page_track_cleanup(struct kvm *kvm);
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void __kvm_page_track_write(struct kvm *kvm, gpa_t gpa, const u8 *new, int bytes);
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void kvm_page_track_delete_slot(struct kvm *kvm, struct kvm_memory_slot *slot);
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static inline bool kvm_page_track_has_external_user(struct kvm *kvm)
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{
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return !hlist_empty(&kvm->arch.track_notifier_head.track_notifier_list);
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}
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#else
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static inline int kvm_page_track_init(struct kvm *kvm) { return 0; }
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static inline void kvm_page_track_cleanup(struct kvm *kvm) { }
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static inline void __kvm_page_track_write(struct kvm *kvm, gpa_t gpa,
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const u8 *new, int bytes) { }
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static inline void kvm_page_track_delete_slot(struct kvm *kvm,
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struct kvm_memory_slot *slot) { }
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static inline bool kvm_page_track_has_external_user(struct kvm *kvm) { return false; }
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#endif /* CONFIG_KVM_EXTERNAL_WRITE_TRACKING */
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static inline void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa,
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const u8 *new, int bytes)
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{
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__kvm_page_track_write(vcpu->kvm, gpa, new, bytes);
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kvm_mmu_track_write(vcpu, gpa, new, bytes);
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}
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#endif /* __KVM_X86_PAGE_TRACK_H */
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