linux-kernel - [PATCH v2 2/7] KVM: nSVM: rename nested 'vmcb' to vmcb12

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Message-Id: <20200820133339.372823-3-mlevitsk@redhat.com>
Date:   Thu, 20 Aug 2020 16:33:34 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     kvm@...r.kernel.org
Cc:     x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        Jim Mattson <jmattson@...gle.com>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND
        64-BIT)), "H. Peter Anvin" <hpa@...or.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Joerg Roedel <joro@...tes.org>,
        Wanpeng Li <wanpengli@...cent.com>,
        Borislav Petkov <bp@...en8.de>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH v2 2/7] KVM: nSVM: rename nested 'vmcb' to vmcb12_gpa in few places

No functional changes.

Signed-off-by: Maxim Levitsky <mlevitsk@...hat.com>
---
 arch/x86/kvm/svm/nested.c | 10 +++++-----
 arch/x86/kvm/svm/svm.c    | 13 +++++++------
 arch/x86/kvm/svm/svm.h    |  2 +-
 3 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index fb68467e6049..f5b17920a2ca 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -431,7 +431,7 @@ int enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
 {
 	int ret;
 
-	svm->nested.vmcb = vmcb_gpa;
+	svm->nested.vmcb12_gpa = vmcb_gpa;
 	load_nested_vmcb_control(svm, &nested_vmcb->control);
 	nested_prepare_vmcb_save(svm, nested_vmcb);
 	nested_prepare_vmcb_control(svm);
@@ -568,7 +568,7 @@ int nested_svm_vmexit(struct vcpu_svm *svm)
 	struct vmcb *vmcb = svm->vmcb;
 	struct kvm_host_map map;
 
-	rc = kvm_vcpu_map(&svm->vcpu, gpa_to_gfn(svm->nested.vmcb), &map);
+	rc = kvm_vcpu_map(&svm->vcpu, gpa_to_gfn(svm->nested.vmcb12_gpa), &map);
 	if (rc) {
 		if (rc == -EINVAL)
 			kvm_inject_gp(&svm->vcpu, 0);
@@ -579,7 +579,7 @@ int nested_svm_vmexit(struct vcpu_svm *svm)
 
 	/* Exit Guest-Mode */
 	leave_guest_mode(&svm->vcpu);
-	svm->nested.vmcb = 0;
+	svm->nested.vmcb12_gpa = 0;
 	WARN_ON_ONCE(svm->nested.nested_run_pending);
 
 	/* in case we halted in L2 */
@@ -1018,7 +1018,7 @@ static int svm_get_nested_state(struct kvm_vcpu *vcpu,
 
 	/* First fill in the header and copy it out.  */
 	if (is_guest_mode(vcpu)) {
-		kvm_state.hdr.svm.vmcb_pa = svm->nested.vmcb;
+		kvm_state.hdr.svm.vmcb_pa = svm->nested.vmcb12_gpa;
 		kvm_state.size += KVM_STATE_NESTED_SVM_VMCB_SIZE;
 		kvm_state.flags |= KVM_STATE_NESTED_GUEST_MODE;
 
@@ -1128,7 +1128,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu,
 	copy_vmcb_control_area(&hsave->control, &svm->vmcb->control);
 	hsave->save = save;
 
-	svm->nested.vmcb = kvm_state->hdr.svm.vmcb_pa;
+	svm->nested.vmcb12_gpa = kvm_state->hdr.svm.vmcb_pa;
 	load_nested_vmcb_control(svm, &ctl);
 	nested_prepare_vmcb_control(svm);
 
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 562a79e3e63a..d33013b9b4d7 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1102,7 +1102,7 @@ static void init_vmcb(struct vcpu_svm *svm)
 	}
 	svm->asid_generation = 0;
 
-	svm->nested.vmcb = 0;
+	svm->nested.vmcb12_gpa = 0;
 	svm->vcpu.arch.hflags = 0;
 
 	if (!kvm_pause_in_guest(svm->vcpu.kvm)) {
@@ -3884,7 +3884,7 @@ static int svm_pre_enter_smm(struct kvm_vcpu *vcpu, char *smstate)
 		/* FED8h - SVM Guest */
 		put_smstate(u64, smstate, 0x7ed8, 1);
 		/* FEE0h - SVM Guest VMCB Physical Address */
-		put_smstate(u64, smstate, 0x7ee0, svm->nested.vmcb);
+		put_smstate(u64, smstate, 0x7ee0, svm->nested.vmcb12_gpa);
 
 		svm->vmcb->save.rax = vcpu->arch.regs[VCPU_REGS_RAX];
 		svm->vmcb->save.rsp = vcpu->arch.regs[VCPU_REGS_RSP];
@@ -3903,17 +3903,18 @@ static int svm_pre_leave_smm(struct kvm_vcpu *vcpu, const char *smstate)
 	struct vmcb *nested_vmcb;
 	struct kvm_host_map map;
 	u64 guest;
-	u64 vmcb;
+	u64 vmcb12_gpa;
 	int ret = 0;
 
 	guest = GET_SMSTATE(u64, smstate, 0x7ed8);
-	vmcb = GET_SMSTATE(u64, smstate, 0x7ee0);
+	vmcb12_gpa = GET_SMSTATE(u64, smstate, 0x7ee0);
 
 	if (guest) {
-		if (kvm_vcpu_map(&svm->vcpu, gpa_to_gfn(vmcb), &map) == -EINVAL)
+		if (kvm_vcpu_map(&svm->vcpu, gpa_to_gfn(vmcb12_gpa), &map) == -EINVAL)
 			return 1;
+
 		nested_vmcb = map.hva;
-		ret = enter_svm_guest_mode(svm, vmcb, nested_vmcb);
+		ret = enter_svm_guest_mode(svm, vmcb12_gpa, nested_vmcb);
 		kvm_vcpu_unmap(&svm->vcpu, &map, true);
 	}
 
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index a798e1731709..ab913468f9cb 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -85,7 +85,7 @@ struct svm_nested_state {
 	struct vmcb *hsave;
 	u64 hsave_msr;
 	u64 vm_cr_msr;
-	u64 vmcb;
+	u64 vmcb12_gpa;
 	u32 host_intercept_exceptions;
 
 	/* These are the merged vectors */
-- 
2.26.2