Commit d8aacf5d authored by Takuya Yoshikawa's avatar Takuya Yoshikawa Committed by Paolo Bonzini
Browse files

KVM: x86: MMU: Remove mapping_level_dirty_bitmap() 



Now that it has only one caller, and its name is not so helpful for
readers, remove it.  The new memslot_valid_for_gpte() function
makes it possible to share the common code between
gfn_to_memslot_dirty_bitmap() and mapping_level().

Signed-off-by: default avatarTakuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent fd136902

arch/x86/kvm/mmu.c

+16 −8
Original line number Diff line number Diff line
@@ -851,6 +851,17 @@ static int host_mapping_level(struct kvm *kvm, gfn_t gfn) 
	return ret;

}



static inline bool memslot_valid_for_gpte(struct kvm_memory_slot *slot,

					  bool no_dirty_log)

{

	if (!slot || slot->flags & KVM_MEMSLOT_INVALID)

		return false;

	if (no_dirty_log && slot->dirty_bitmap)

		return false;



	return true;

}



static struct kvm_memory_slot *

gfn_to_memslot_dirty_bitmap(struct kvm_vcpu *vcpu, gfn_t gfn,

			    bool no_dirty_log)
@@ -858,25 +869,22 @@ gfn_to_memslot_dirty_bitmap(struct kvm_vcpu *vcpu, gfn_t gfn, 
	struct kvm_memory_slot *slot;



	slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);

	if (!slot || slot->flags & KVM_MEMSLOT_INVALID ||

	      (no_dirty_log && slot->dirty_bitmap))

	if (!memslot_valid_for_gpte(slot, no_dirty_log))

		slot = NULL;



	return slot;

}



static bool mapping_level_dirty_bitmap(struct kvm_vcpu *vcpu, gfn_t large_gfn)

{

	return !gfn_to_memslot_dirty_bitmap(vcpu, large_gfn, true);

}



static int mapping_level(struct kvm_vcpu *vcpu, gfn_t large_gfn,

			 bool *force_pt_level)

{

	int host_level, level, max_level;

	struct kvm_memory_slot *slot;



	slot = kvm_vcpu_gfn_to_memslot(vcpu, large_gfn);



	if (likely(!*force_pt_level))

		*force_pt_level = mapping_level_dirty_bitmap(vcpu, large_gfn);

		*force_pt_level = !memslot_valid_for_gpte(slot, true);

	if (unlikely(*force_pt_level))

		return PT_PAGE_TABLE_LEVEL;

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