[PATCH 03/13] KVM: x86/mmu: use tdp_mmu_free_sp to free roots

[Ben Gardon]

Minor cleanup to deduplicate the code used to free a struct kvm_mmu_page
in the TDP MMU.

No functional change intended.

Signed-off-by: Ben Gardon <bgardon@xxxxxxxxxx>
---
 arch/x86/kvm/mmu/tdp_mmu.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 1929cc7a42ac..5a2698d64957 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -88,6 +88,12 @@ static inline struct kvm_mmu_page *tdp_mmu_next_root(struct kvm *kvm,
 static bool zap_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,
 			  gfn_t start, gfn_t end, bool can_yield);
 
+static void tdp_mmu_free_sp(struct kvm_mmu_page *sp)
+{
+	free_page((unsigned long)sp->spt);
+	kmem_cache_free(mmu_page_header_cache, sp);
+}
+
 void kvm_tdp_mmu_free_root(struct kvm *kvm, struct kvm_mmu_page *root)
 {
 	gfn_t max_gfn = 1ULL << (shadow_phys_bits - PAGE_SHIFT);
@@ -101,8 +107,7 @@ void kvm_tdp_mmu_free_root(struct kvm *kvm, struct kvm_mmu_page *root)
 
 	zap_gfn_range(kvm, root, 0, max_gfn, false);
 
-	free_page((unsigned long)root->spt);
-	kmem_cache_free(mmu_page_header_cache, root);
+	tdp_mmu_free_sp(root);
 }
 
 static union kvm_mmu_page_role page_role_for_level(struct kvm_vcpu *vcpu,
@@ -164,12 +169,6 @@ hpa_t kvm_tdp_mmu_get_vcpu_root_hpa(struct kvm_vcpu *vcpu)
 	return __pa(root->spt);
 }
 
-static void tdp_mmu_free_sp(struct kvm_mmu_page *sp)
-{
-	free_page((unsigned long)sp->spt);
-	kmem_cache_free(mmu_page_header_cache, sp);
-}
-
 /*
  * This is called through call_rcu in order to free TDP page table memory
  * safely with respect to other kernel threads that may be operating on
-- 
2.31.0.291.g576ba9dcdaf-goog