KVM: VMX: Stash kvm_vmx in a local variable for Hyper-V paravirt TLB flush

Capture kvm_vmx in a local variable instead of polluting
hv_remote_flush_tlb_with_range() with to_kvm_vmx(kvm).

No functional change intended.

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210305183123.3978098-4-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 8ba25b1..d35173b 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -520,26 +520,27 @@ static inline int hv_remote_flush_eptp(u64 eptp, struct kvm_tlb_range *range)
 static int hv_remote_flush_tlb_with_range(struct kvm *kvm,
                struct kvm_tlb_range *range)
 {
+       struct kvm_vmx *kvm_vmx = to_kvm_vmx(kvm);
        struct kvm_vcpu *vcpu;
        int ret = 0, i;
 
-       spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+       spin_lock(&kvm_vmx->ept_pointer_lock);
 
-       if (to_kvm_vmx(kvm)->ept_pointers_match == EPT_POINTERS_CHECK)
+       if (kvm_vmx->ept_pointers_match == EPT_POINTERS_CHECK)
                check_ept_pointer_match(kvm);
 
-       if (to_kvm_vmx(kvm)->ept_pointers_match != EPT_POINTERS_MATCH) {
+       if (kvm_vmx->ept_pointers_match != EPT_POINTERS_MATCH) {
                kvm_for_each_vcpu(i, vcpu, kvm) {
                        /* If ept_pointer is invalid pointer, bypass flush request. */
                        if (VALID_PAGE(to_vmx(vcpu)->ept_pointer))
                                ret |= hv_remote_flush_eptp(to_vmx(vcpu)->ept_pointer,
                                                            range);
                }
-       } else if (VALID_PAGE(to_kvm_vmx(kvm)->hv_tlb_eptp)) {
-               ret = hv_remote_flush_eptp(to_kvm_vmx(kvm)->hv_tlb_eptp, range);
+       } else if (VALID_PAGE(kvm_vmx->hv_tlb_eptp)) {
+               ret = hv_remote_flush_eptp(kvm_vmx->hv_tlb_eptp, range);
        }
 
-       spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
+       spin_unlock(&kvm_vmx->ept_pointer_lock);
        return ret;
 }
 static int hv_remote_flush_tlb(struct kvm *kvm)