3 files changed, 10 insertions, 13 deletions
diff --git a/arch/s390/boot/ipl_parm.c b/arch/s390/boot/ipl_parm.c
index 8753cb0339e5..7b7521762633 100644
--- a/arch/s390/boot/ipl_parm.c
+++ b/arch/s390/boot/ipl_parm.c
@@ -19,7 +19,6 @@ struct parmarea parmarea __section(".parmarea") = {
 };
 
 char __bootdata(early_command_line)[COMMAND_LINE_SIZE];
-int __bootdata(noexec_disabled);
 
 unsigned int __bootdata_preserved(zlib_dfltcc_support) = ZLIB_DFLTCC_FULL;
 struct ipl_parameter_block __bootdata_preserved(ipl_block);
@@ -290,12 +289,6 @@ void parse_boot_command_line(void)
 				zlib_dfltcc_support = ZLIB_DFLTCC_FULL_DEBUG;
 		}
 
-		if (!strcmp(param, "noexec")) {
-			rc = kstrtobool(val, &enabled);
-			if (!rc && !enabled)
-				noexec_disabled = 1;
-		}
-
 		if (!strcmp(param, "facilities") && val)
 			modify_fac_list(val);
 
diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c
index b9681cb22753..d3e48bd9c394 100644
--- a/arch/s390/boot/startup.c
+++ b/arch/s390/boot/startup.c
@@ -53,10 +53,8 @@ static void detect_facilities(void)
 	}
 	if (test_facility(78))
 		machine.has_edat2 = 1;
-	if (!noexec_disabled && test_facility(130)) {
+	if (test_facility(130))
 		machine.has_nx = 1;
-		__ctl_set_bit(0, 20);
-	}
 }
 
 static void setup_lpp(void)
diff --git a/arch/s390/boot/vmem.c b/arch/s390/boot/vmem.c
index c67f59db7a51..01257ce3b89c 100644
--- a/arch/s390/boot/vmem.c
+++ b/arch/s390/boot/vmem.c
@@ -287,7 +287,9 @@ static void pgtable_pte_populate(pmd_t *pmd, unsigned long addr, unsigned long e
 			if (kasan_pte_populate_zero_shadow(pte, mode))
 				continue;
 			entry = __pte(_pa(addr, PAGE_SIZE, mode));
-			entry = set_pte_bit(entry, PAGE_KERNEL_EXEC);
+			entry = set_pte_bit(entry, PAGE_KERNEL);
+			if (!machine.has_nx)
+				entry = clear_pte_bit(entry, __pgprot(_PAGE_NOEXEC));
 			set_pte(pte, entry);
 			pages++;
 		}
@@ -311,7 +313,9 @@ static void pgtable_pmd_populate(pud_t *pud, unsigned long addr, unsigned long e
 				continue;
 			if (can_large_pmd(pmd, addr, next)) {
 				entry = __pmd(_pa(addr, _SEGMENT_SIZE, mode));
-				entry = set_pmd_bit(entry, SEGMENT_KERNEL_EXEC);
+				entry = set_pmd_bit(entry, SEGMENT_KERNEL);
+				if (!machine.has_nx)
+					entry = clear_pmd_bit(entry, __pgprot(_SEGMENT_ENTRY_NOEXEC));
 				set_pmd(pmd, entry);
 				pages++;
 				continue;
@@ -342,7 +346,9 @@ static void pgtable_pud_populate(p4d_t *p4d, unsigned long addr, unsigned long e
 				continue;
 			if (can_large_pud(pud, addr, next)) {
 				entry = __pud(_pa(addr, _REGION3_SIZE, mode));
-				entry = set_pud_bit(entry, REGION3_KERNEL_EXEC);
+				entry = set_pud_bit(entry, REGION3_KERNEL);
+				if (!machine.has_nx)
+					entry = clear_pud_bit(entry, __pgprot(_REGION_ENTRY_NOEXEC));
 				set_pud(pud, entry);
 				pages++;
 				continue;