diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index d4c8faf4a4cddeb0dc700df40ac68575db38e91d..73c1f6ae7241528377acf127aa30eb2eaae7408f 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -111,7 +111,6 @@ static unsigned long cpa_1g_preserved;
 static unsigned long cpa_2m_checked;
 static unsigned long cpa_2m_sameprot;
 static unsigned long cpa_2m_preserved;
-static unsigned long cpa_4k_checked;
 static unsigned long cpa_4k_install;
 
 static inline void cpa_inc_1g_checked(void)
@@ -124,11 +123,6 @@ static inline void cpa_inc_2m_checked(void)
 	cpa_2m_checked++;
 }
 
-static inline void cpa_inc_4k_checked(void)
-{
-	cpa_4k_checked++;
-}
-
 static inline void cpa_inc_4k_install(void)
 {
 	cpa_4k_install++;
@@ -158,7 +152,6 @@ static int cpastats_show(struct seq_file *m, void *p)
 	seq_printf(m, "2M pages checked:     %16lu\n", cpa_2m_checked);
 	seq_printf(m, "2M pages sameprot:    %16lu\n", cpa_2m_sameprot);
 	seq_printf(m, "2M pages preserved:   %16lu\n", cpa_2m_preserved);
-	seq_printf(m, "4K pages checked:     %16lu\n", cpa_4k_checked);
 	seq_printf(m, "4K pages set-checked: %16lu\n", cpa_4k_install);
 	return 0;
 }
@@ -185,7 +178,6 @@ late_initcall(cpa_stats_init);
 #else
 static inline void cpa_inc_1g_checked(void) { }
 static inline void cpa_inc_2m_checked(void) { }
-static inline void cpa_inc_4k_checked(void) { }
 static inline void cpa_inc_4k_install(void) { }
 static inline void cpa_inc_lp_sameprot(int level) { }
 static inline void cpa_inc_lp_preserved(int level) { }
@@ -745,11 +737,10 @@ static pgprot_t pgprot_clear_protnone_bits(pgprot_t prot)
 static int __should_split_large_page(pte_t *kpte, unsigned long address,
 				     struct cpa_data *cpa)
 {
-	unsigned long numpages, pmask, psize, lpaddr, addr, pfn, old_pfn;
+	unsigned long numpages, pmask, psize, lpaddr, pfn, old_pfn;
 	pgprot_t old_prot, new_prot, req_prot, chk_prot;
 	pte_t new_pte, old_pte, *tmp;
 	enum pg_level level;
-	int i;
 
 	/*
 	 * Check for races, another CPU might have split this page
@@ -854,53 +845,30 @@ static int __should_split_large_page(pte_t *kpte, unsigned long address,
 	}
 
 	/*
-	 * Optimization: Check whether the requested pgprot is conflicting
-	 * with a static protection requirement in the large page. If not,
-	 * then checking whether the requested range is fully covering the
-	 * large page can be done right here.
+	 * If the requested range does not cover the full page, split it up
 	 */
-	new_prot = static_protections(req_prot, lpaddr, old_pfn, numpages,
-				      CPA_DETECT);
-
-	if (pgprot_val(req_prot) == pgprot_val(new_prot)) {
-		if (address != lpaddr || cpa->numpages != numpages)
-			return 1;
-		goto setlp;
-	}
+	if (address != lpaddr || cpa->numpages != numpages)
+		return 1;
 
 	/*
-	 * Slow path. The full large page check above established that the
-	 * requested pgprot cannot be applied to the full large page due to
-	 * conflicting requirements of static protection regions. It might
-	 * turn out that the whole requested range is covered by the
-	 * modified protection of the first 4k segment at @address. This
-	 * might result in the ability to preserve the large page
-	 * nevertheless.
+	 * Check whether the requested pgprot is conflicting with a static
+	 * protection requirement in the large page.
 	 */
-	new_prot = static_protections(req_prot, address, pfn, 1, CPA_DETECT);
-	pfn = old_pfn;
-	for (i = 0, addr = lpaddr; i < numpages; i++, addr += PAGE_SIZE, pfn++) {
-		chk_prot = static_protections(req_prot, addr, pfn, 1,
-					      CPA_DETECT);
-		cpa_inc_4k_checked();
-		if (pgprot_val(chk_prot) != pgprot_val(new_prot))
-			return 1;
-	}
-
-	/* If there are no changes, return. */
-	if (pgprot_val(new_prot) == pgprot_val(old_prot)) {
-		cpa_inc_lp_sameprot(level);
-		return 0;
-	}
+	new_prot = static_protections(req_prot, lpaddr, old_pfn, numpages,
+				      CPA_DETECT);
 
 	/*
-	 * Verify that the address is aligned and the number of pages
-	 * covers the full page.
+	 * If there is a conflict, split the large page.
+	 *
+	 * There used to be a 4k wise evaluation trying really hard to
+	 * preserve the large pages, but experimentation has shown, that this
+	 * does not help at all. There might be corner cases which would
+	 * preserve one large page occasionally, but it's really not worth the
+	 * extra code and cycles for the common case.
 	 */
-	if (address != lpaddr || cpa->numpages != numpages)
+	if (pgprot_val(req_prot) != pgprot_val(new_prot))
 		return 1;
 
-setlp:
 	/* All checks passed. Update the large page mapping. */
 	new_pte = pfn_pte(old_pfn, new_prot);
 	__set_pmd_pte(kpte, address, new_pte);