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Commit 6c41f428 authored by Avi Kivity's avatar Avi Kivity
Browse files

KVM: MMU: Infer shadow root level in direct_map() 



In all cases the shadow root level is available in mmu.shadow_root_level,
so there is no need to pass it as a parameter.

Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 0be9e929

arch/x86/kvm/mmu.c

+4 −5
Original line number Diff line number Diff line
@@ -1227,11 +1227,11 @@ static void nonpaging_new_cr3(struct kvm_vcpu *vcpu) 
}



static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write,

			   int largepage, gfn_t gfn, pfn_t pfn,

			   int level)

			int largepage, gfn_t gfn, pfn_t pfn)

{

	hpa_t table_addr = vcpu->arch.mmu.root_hpa;

	int pt_write = 0;

	int level = vcpu->arch.mmu.shadow_root_level;



	for (; ; level--) {

		u32 index = PT64_INDEX(v, level);
@@ -1299,8 +1299,7 @@ static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn) 
	if (mmu_notifier_retry(vcpu, mmu_seq))

		goto out_unlock;

	kvm_mmu_free_some_pages(vcpu);

	r = __direct_map(vcpu, v, write, largepage, gfn, pfn,

			 PT32E_ROOT_LEVEL);

	r = __direct_map(vcpu, v, write, largepage, gfn, pfn);

	spin_unlock(&vcpu->kvm->mmu_lock);
@@ -1455,7 +1454,7 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa, 
		goto out_unlock;

	kvm_mmu_free_some_pages(vcpu);

	r = __direct_map(vcpu, gpa, error_code & PFERR_WRITE_MASK,

			 largepage, gfn, pfn, kvm_x86_ops->get_tdp_level());

			 largepage, gfn, pfn);

	spin_unlock(&vcpu->kvm->mmu_lock);



	return r;