--- zzzz-none-000/linux-3.10.107/mm/highmem.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/mm/highmem.c	2021-11-10 11:53:56.000000000 +0000
@@ -44,6 +44,14 @@
  */
 #ifdef CONFIG_HIGHMEM
 
+#ifndef ARCH_PKMAP_COLORING
+#define     set_pkmap_color(pg,cl)          /* */
+#define     get_last_pkmap_nr(p,cl)         (p)
+#define     get_next_pkmap_nr(p,cl)         ((p + 1) & LAST_PKMAP_MASK)
+#define     is_no_more_pkmaps(p,cl)         (!p)
+#define     get_next_pkmap_counter(c,cl)    (c - 1)
+#endif
+
 unsigned long totalhigh_pages __read_mostly;
 EXPORT_SYMBOL(totalhigh_pages);
 
@@ -161,19 +169,24 @@
 {
 	unsigned long vaddr;
 	int count;
+	int color __attribute__((unused));
+
+	set_pkmap_color(page,color);
+	last_pkmap_nr = get_last_pkmap_nr(last_pkmap_nr,color);
 
 start:
 	count = LAST_PKMAP;
 	/* Find an empty entry */
 	for (;;) {
-		last_pkmap_nr = (last_pkmap_nr + 1) & LAST_PKMAP_MASK;
-		if (!last_pkmap_nr) {
+		last_pkmap_nr = get_next_pkmap_nr(last_pkmap_nr,color);
+		if (is_no_more_pkmaps(last_pkmap_nr,color)) {
 			flush_all_zero_pkmaps();
 			count = LAST_PKMAP;
 		}
 		if (!pkmap_count[last_pkmap_nr])
 			break;	/* Found a usable entry */
-		if (--count)
+		count = get_next_pkmap_counter(count,color);
+		if (count > 0)
 			continue;
 
 		/*