When splitting large pages we need to update the pages stats to reflect all of the new pages at the lower level. We do not need to change the page stats for the large page that was removed as that is already handled tdp_mmu_set_spte_atomic. Signed-off-by: David Matlack <dmatlack@xxxxxxxxxx> --- arch/x86/kvm/mmu/tdp_mmu.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index 8f60d942c789..4c313613a939 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -1299,7 +1299,12 @@ static bool tdp_mmu_split_large_page_atomic(struct kvm *kvm, struct tdp_iter *it child_sp->spt[i] = child_spte; } - return tdp_mmu_install_sp_atomic(kvm, iter, child_sp, false); + if (!tdp_mmu_install_sp_atomic(kvm, iter, child_sp, false)) + return false; + + kvm_update_page_stats(kvm, level - 1, PT64_ENT_PER_PAGE); + + return true; } static void tdp_mmu_split_large_pages_root(struct kvm *kvm, struct kvm_mmu_page *root, -- 2.34.0.rc2.393.gf8c9666880-goog
