From: Sean Christopherson Date: Fri, 26 Mar 2021 02:19:46 +0000 (-0700) Subject: KVM: x86/mmu: Use leaf-only loop for walking TDP SPTEs when changing SPTE X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=aaaac889cf63a6c2e5f4b20c20cccf5aeb78bd51;p=linux.git KVM: x86/mmu: Use leaf-only loop for walking TDP SPTEs when changing SPTE Use the leaf-only TDP iterator when changing the SPTE in reaction to a MMU notifier. Practically speaking, this is a nop since the guts of the loop explicitly looks for 4k SPTEs, which are always leaf SPTEs. Switch the iterator to match age_gfn_range() and test_age_gfn() so that a future patch can consolidate the core iterating logic. No real functional change intended. Signed-off-by: Sean Christopherson Message-Id: <20210326021957.1424875-8-seanjc@google.com> Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index 3608f4aa1d086..6b7a5368217be 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -1037,7 +1037,7 @@ static int set_tdp_spte(struct kvm *kvm, struct kvm_memory_slot *slot, new_pfn = pte_pfn(*ptep); - tdp_root_for_each_pte(iter, root, gfn, gfn + 1) { + tdp_root_for_each_leaf_pte(iter, root, gfn, gfn + 1) { if (iter.level != PG_LEVEL_4K) continue;