From: David Hildenbrand <david@redhat.com>
Date: Thu, 3 Aug 2017 18:11:05 +0200
Subject: KVM: nVMX: get rid of nested_release_page*
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Patch-mainline: v4.14-rc1
Git-commit: 53a70daf3cfd4561fec7f0fe65e4377bebc1f55c
References: bsc#1077761

Let's also just use the underlying functions directly here.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
[Rebased on top of 9f744c597460 ("KVM: nVMX: do not pin the VMCS12")]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
---
 arch/x86/kvm/vmx.c |   41 +++++++++++++++--------------------------
 1 file changed, 15 insertions(+), 26 deletions(-)

--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -886,17 +886,6 @@
 	return to_vmx(vcpu)->nested.cached_vmcs12;
 }
 
-
-static void nested_release_page(struct page *page)
-{
-	kvm_release_page_dirty(page);
-}
-
-static void nested_release_page_clean(struct page *page)
-{
-	kvm_release_page_clean(page);
-}
-
 static bool nested_ept_ad_enabled(struct kvm_vcpu *vcpu);
 static unsigned long nested_ept_get_cr3(struct kvm_vcpu *vcpu);
 static u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa);
@@ -7138,12 +7127,12 @@
 	}
 	if (*(u32 *)kmap(page) != VMCS12_REVISION) {
 		kunmap(page);
-		nested_release_page_clean(page);
+		kvm_release_page_clean(page);
 		nested_vmx_failInvalid(vcpu);
 		return kvm_skip_emulated_instruction(vcpu);
 	}
 	kunmap(page);
-	nested_release_page_clean(page);
+	kvm_release_page_clean(page);
 
 	vmx->nested.vmxon_ptr = vmptr;
 	ret = enter_vmx_operation(vcpu);
@@ -7224,16 +7213,16 @@
 	kfree(vmx->nested.cached_vmcs12);
 	/* Unpin physical memory we referred to in current vmcs02 */
 	if (vmx->nested.apic_access_page) {
-		nested_release_page(vmx->nested.apic_access_page);
+		kvm_release_page_dirty(vmx->nested.apic_access_page);
 		vmx->nested.apic_access_page = NULL;
 	}
 	if (vmx->nested.virtual_apic_page) {
-		nested_release_page(vmx->nested.virtual_apic_page);
+		kvm_release_page_dirty(vmx->nested.virtual_apic_page);
 		vmx->nested.virtual_apic_page = NULL;
 	}
 	if (vmx->nested.pi_desc_page) {
 		kunmap(vmx->nested.pi_desc_page);
-		nested_release_page(vmx->nested.pi_desc_page);
+		kvm_release_page_dirty(vmx->nested.pi_desc_page);
 		vmx->nested.pi_desc_page = NULL;
 		vmx->nested.pi_desc = NULL;
 	}
@@ -7608,7 +7597,7 @@
 		new_vmcs12 = kmap(page);
 		if (new_vmcs12->revision_id != VMCS12_REVISION) {
 			kunmap(page);
-			nested_release_page_clean(page);
+			kvm_release_page_clean(page);
 			nested_vmx_failValid(vcpu,
 				VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID);
 			return kvm_skip_emulated_instruction(vcpu);
@@ -7621,7 +7610,7 @@
 		 */
 		memcpy(vmx->nested.cached_vmcs12, new_vmcs12, VMCS12_SIZE);
 		kunmap(page);
-		nested_release_page_clean(page);
+		kvm_release_page_clean(page);
 
 		set_current_vmptr(vmx, vmptr);
 	}
@@ -9610,7 +9599,7 @@
 		 * to it so we can release it later.
 		 */
 		if (vmx->nested.apic_access_page) { /* shouldn't happen */
-			nested_release_page(vmx->nested.apic_access_page);
+			kvm_release_page_dirty(vmx->nested.apic_access_page);
 			vmx->nested.apic_access_page = NULL;
 		}
 		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->apic_access_addr);
@@ -9637,7 +9626,7 @@
 
 	if (nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW)) {
 		if (vmx->nested.virtual_apic_page) { /* shouldn't happen */
-			nested_release_page(vmx->nested.virtual_apic_page);
+			kvm_release_page_dirty(vmx->nested.virtual_apic_page);
 			vmx->nested.virtual_apic_page = NULL;
 		}
 		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->virtual_apic_page_addr);
@@ -9665,7 +9654,7 @@
 	if (nested_cpu_has_posted_intr(vmcs12)) {
 		if (vmx->nested.pi_desc_page) { /* shouldn't happen */
 			kunmap(vmx->nested.pi_desc_page);
-			nested_release_page(vmx->nested.pi_desc_page);
+			kvm_release_page_dirty(vmx->nested.pi_desc_page);
 			vmx->nested.pi_desc_page = NULL;
 		}
 		page = kvm_vcpu_gpa_to_page(vcpu, vmcs12->posted_intr_desc_addr);
@@ -9785,7 +9774,7 @@
 		}
 	}
 	kunmap(page);
-	nested_release_page_clean(page);
+	kvm_release_page_clean(page);
 
 	return true;
 }
@@ -11178,16 +11167,16 @@
 
 	/* Unpin physical memory we referred to in vmcs02 */
 	if (vmx->nested.apic_access_page) {
-		nested_release_page(vmx->nested.apic_access_page);
+		kvm_release_page_dirty(vmx->nested.apic_access_page);
 		vmx->nested.apic_access_page = NULL;
 	}
 	if (vmx->nested.virtual_apic_page) {
-		nested_release_page(vmx->nested.virtual_apic_page);
+		kvm_release_page_dirty(vmx->nested.virtual_apic_page);
 		vmx->nested.virtual_apic_page = NULL;
 	}
 	if (vmx->nested.pi_desc_page) {
 		kunmap(vmx->nested.pi_desc_page);
-		nested_release_page(vmx->nested.pi_desc_page);
+		kvm_release_page_dirty(vmx->nested.pi_desc_page);
 		vmx->nested.pi_desc_page = NULL;
 		vmx->nested.pi_desc = NULL;
 	}
@@ -11370,7 +11359,7 @@
 		pml_address = kmap(page);
 		pml_address[vmcs12->guest_pml_index--] = gpa;
 		kunmap(page);
-		nested_release_page_clean(page);
+		kvm_release_page_clean(page);
 	}
 
 	return 0;