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From: Krish Sadhukhan <krish.sadhukhan@oracle.com>
To: kvm@vger.kernel.org
Cc: pbonzini@redhat.com, jmattson@google.com, seanjc@google.com
Subject: [PATCH 3/5 v6] KVM: nSVM: Cleanup in nested_svm_vmrun()
Date: Thu,  1 Apr 2021 20:43:29 -0400	[thread overview]
Message-ID: <20210402004331.91658-4-krish.sadhukhan@oracle.com> (raw)
In-Reply-To: <20210402004331.91658-1-krish.sadhukhan@oracle.com>

Use local variables to derefence svm->vcpu and svm->vmcb as they make the
code tidier.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
---
 arch/x86/kvm/svm/nested.c | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index b3988b3a3fd5..3fd51fe63170 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -517,26 +517,27 @@ int nested_svm_vmrun(struct vcpu_svm *svm)
 {
 	int ret;
 	struct vmcb *vmcb12;
+	struct kvm_vcpu *vcpu = &svm->vcpu;
 	struct vmcb *hsave = svm->nested.hsave;
 	struct vmcb *vmcb = svm->vmcb;
 	struct kvm_host_map map;
 	u64 vmcb12_gpa;
 
-	if (is_smm(&svm->vcpu)) {
-		kvm_queue_exception(&svm->vcpu, UD_VECTOR);
+	if (is_smm(vcpu)) {
+		kvm_queue_exception(vcpu, UD_VECTOR);
 		return 1;
 	}
 
-	vmcb12_gpa = svm->vmcb->save.rax;
-	ret = kvm_vcpu_map(&svm->vcpu, gpa_to_gfn(vmcb12_gpa), &map);
+	vmcb12_gpa = vmcb->save.rax;
+	ret = kvm_vcpu_map(vcpu, gpa_to_gfn(vmcb12_gpa), &map);
 	if (ret == -EINVAL) {
-		kvm_inject_gp(&svm->vcpu, 0);
+		kvm_inject_gp(vcpu, 0);
 		return 1;
 	} else if (ret) {
-		return kvm_skip_emulated_instruction(&svm->vcpu);
+		return kvm_skip_emulated_instruction(vcpu);
 	}
 
-	ret = kvm_skip_emulated_instruction(&svm->vcpu);
+	ret = kvm_skip_emulated_instruction(vcpu);
 
 	vmcb12 = map.hva;
 
@@ -556,8 +557,8 @@ int nested_svm_vmrun(struct vcpu_svm *svm)
 
 
 	/* Clear internal status */
-	kvm_clear_exception_queue(&svm->vcpu);
-	kvm_clear_interrupt_queue(&svm->vcpu);
+	kvm_clear_exception_queue(vcpu);
+	kvm_clear_interrupt_queue(vcpu);
 
 	/*
 	 * Save the old vmcb, so we don't need to pick what we save, but can
@@ -569,17 +570,17 @@ int nested_svm_vmrun(struct vcpu_svm *svm)
 	hsave->save.ds     = vmcb->save.ds;
 	hsave->save.gdtr   = vmcb->save.gdtr;
 	hsave->save.idtr   = vmcb->save.idtr;
-	hsave->save.efer   = svm->vcpu.arch.efer;
-	hsave->save.cr0    = kvm_read_cr0(&svm->vcpu);
+	hsave->save.efer   = vcpu->arch.efer;
+	hsave->save.cr0    = kvm_read_cr0(vcpu);
 	hsave->save.cr4    = svm->vcpu.arch.cr4;
-	hsave->save.rflags = kvm_get_rflags(&svm->vcpu);
-	hsave->save.rip    = kvm_rip_read(&svm->vcpu);
+	hsave->save.rflags = kvm_get_rflags(vcpu);
+	hsave->save.rip    = kvm_rip_read(vcpu);
 	hsave->save.rsp    = vmcb->save.rsp;
 	hsave->save.rax    = vmcb->save.rax;
 	if (npt_enabled)
 		hsave->save.cr3    = vmcb->save.cr3;
 	else
-		hsave->save.cr3    = kvm_read_cr3(&svm->vcpu);
+		hsave->save.cr3    = kvm_read_cr3(vcpu);
 
 	copy_vmcb_control_area(&hsave->control, &vmcb->control);
 
@@ -602,7 +603,7 @@ int nested_svm_vmrun(struct vcpu_svm *svm)
 	nested_svm_vmexit(svm);
 
 out:
-	kvm_vcpu_unmap(&svm->vcpu, &map, true);
+	kvm_vcpu_unmap(vcpu, &map, true);
 
 	return ret;
 }
-- 
2.27.0


  parent reply	other threads:[~2021-04-02  1:33 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-02  0:43 [PATCH 0/5 v6] KVM: nSVM: Check addresses of MSR bitmap and IO bitmap tables on vmrun of nested guests Krish Sadhukhan
2021-04-02  0:43 ` [PATCH 1/5 v6] KVM: SVM: Define actual size of IOPM and MSRPM tables Krish Sadhukhan
2021-04-02 17:52   ` Sean Christopherson
2021-04-02  0:43 ` [PATCH 2/5 v6] nSVM: Check addresses of MSR and IO permission maps Krish Sadhukhan
2021-04-02 17:45   ` Sean Christopherson
2021-04-02  0:43 ` Krish Sadhukhan [this message]
2021-04-02  0:43 ` [PATCH 4/5 v6] nSVM: Test addresses of MSR and IO permissions maps Krish Sadhukhan
2021-04-02  0:43 ` [PATCH 5/5 v6] SVM: Use ALIGN macro when aligning 'io_bitmap_area' Krish Sadhukhan
2021-04-02 17:38 ` [PATCH 0/5 v6] KVM: nSVM: Check addresses of MSR bitmap and IO bitmap tables on vmrun of nested guests Sean Christopherson
2021-04-02 17:39   ` Paolo Bonzini

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