1 files changed, 26 insertions, 1 deletions
diff --git a/mm/execmem.c b/mm/execmem.c
index aac211bc88c5..d0bf0123bce4 100644
--- a/mm/execmem.c
+++ b/mm/execmem.c
@@ -336,7 +336,7 @@ static bool execmem_cache_free(void *ptr)
 	return true;
 }
 
-int execmem_make_temp_rw(void *ptr, size_t size)
+static int execmem_force_rw(void *ptr, size_t size)
 {
 	unsigned int nr = PAGE_ALIGN(size) >> PAGE_SHIFT;
 	unsigned long addr = (unsigned long)ptr;
@@ -358,6 +358,16 @@ int execmem_restore_rox(void *ptr, size_t size)
 }
 
 #else /* CONFIG_ARCH_HAS_EXECMEM_ROX */
+/*
+ * when ROX cache is not used the permissions defined by architectures for
+ * execmem ranges that are updated before use (e.g. EXECMEM_MODULE_TEXT) must
+ * be writable anyway
+ */
+static inline int execmem_force_rw(void *ptr, size_t size)
+{
+	return 0;
+}
+
 static void *execmem_cache_alloc(struct execmem_range *range, size_t size)
 {
 	return NULL;
@@ -387,6 +397,21 @@ void *execmem_alloc(enum execmem_type type, size_t size)
 	return kasan_reset_tag(p);
 }
 
+void *execmem_alloc_rw(enum execmem_type type, size_t size)
+{
+	void *p __free(execmem) = execmem_alloc(type, size);
+	int err;
+
+	if (!p)
+		return NULL;
+
+	err = execmem_force_rw(p, size);
+	if (err)
+		return NULL;
+
+	return no_free_ptr(p);
+}
+
 void execmem_free(void *ptr)
 {
 	/*