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-rw-r--r--arch/x86/kvm/mmu/tdp_mmu.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c
index 8783b9eb2b33..d80cb122b5f3 100644
--- a/arch/x86/kvm/mmu/tdp_mmu.c
+++ b/arch/x86/kvm/mmu/tdp_mmu.c
@@ -728,6 +728,12 @@ static bool zap_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,
struct tdp_iter iter;
/*
+ * No need to try to step down in the iterator when zapping all SPTEs,
+ * zapping the top-level non-leaf SPTEs will recurse on their children.
+ */
+ int min_level = zap_all ? root->role.level : PG_LEVEL_4K;
+
+ /*
* Bound the walk at host.MAXPHYADDR, guest accesses beyond that will
* hit a #PF(RSVD) and never get to an EPT Violation/Misconfig / #NPF,
* and so KVM will never install a SPTE for such addresses.
@@ -738,7 +744,8 @@ static bool zap_gfn_range(struct kvm *kvm, struct kvm_mmu_page *root,
rcu_read_lock();
- tdp_root_for_each_pte(iter, root, start, end) {
+ for_each_tdp_pte_min_level(iter, root->spt, root->role.level,
+ min_level, start, end) {
retry:
if (can_yield &&
tdp_mmu_iter_cond_resched(kvm, &iter, flush, shared)) {