FIXME: regs_load.S need complete x32 ABI support; now it will just compile, but tests won't run properly.
--- linux-4.7/tools/scripts/Makefile.arch~	2015-02-09 03:54:22.000000000 +0100
+++ linux-4.7/tools/scripts/Makefile.arch	2015-04-11 12:17:45.107911011 +0200
@@ -24,8 +24,14 @@
 ARCH ?= $(RAW_ARCH)
 
 LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
+ILP32 := $(shell echo __ILP32__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
 ifeq ($(LP64), 1)
   IS_64_BIT := 1
 else
   IS_64_BIT := 0
 endif
+ifeq ($(ILP32), 1)
+  IS_X32_BIT := 1
+else
+  IS_X32_BIT := 0
+endif
--- linux-4.8/tools/perf/Makefile.config~	2015-04-11 12:12:31.000000000 +0200
+++ linux-4.8/tools/perf/Makefile.config	2015-04-11 12:19:05.011244885 +0200
@@ -41,6 +41,11 @@
     LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
   endif
   NO_PERF_REGS := 0
+  ifeq (${IS_X32_BIT}, 1)
+    CFLAGS += -DHAVE_ARCH_X32_SUPPORT
+    ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
+    LIBUNWIND_LIBS = -lunwind-x86_64 -llzma -lunwind
+  endif
 endif
 
 ifeq ($(ARCH),arm)
--- linux-3.19/tools/perf/arch/x86/tests/regs_load.S~	2015-02-09 03:54:22.000000000 +0100
+++ linux-3.19/tools/perf/arch/x86/tests/regs_load.S	2015-04-11 12:21:07.717912384 +0200
@@ -62,14 +62,20 @@
 ENDPROC(perf_regs_load)
 #else
 ENTRY(perf_regs_load)
-	push %edi
+#ifdef HAVE_ARCH_X32_SUPPORT
+#else
+	pushl %edi
+#endif
 	movl 8(%esp), %edi
 	movl %eax, AX(%edi)
 	movl %ebx, BX(%edi)
 	movl %ecx, CX(%edi)
 	movl %edx, DX(%edi)
 	movl %esi, SI(%edi)
-	pop %eax
+#ifdef HAVE_ARCH_X32_SUPPORT
+#else
+	popl %eax
+#endif
 	movl %eax, DI(%edi)
 	movl %ebp, BP(%edi)
 
--- linux-3.19/tools/perf/bench/sched-messaging.c~	2015-02-09 03:54:22.000000000 +0100
+++ linux-3.19/tools/perf/bench/sched-messaging.c	2015-04-11 12:33:22.587917365 +0200
@@ -310,13 +310,24 @@
 		printf("# %d groups == %d %s run\n\n",
 		       num_groups, num_groups * 2 * num_fds,
 		       thread_mode ? "threads" : "processes");
+#if defined(__x86_64__) && !defined(__ILP32__)
 		printf(" %14s: %lu.%03lu [sec]\n", "Total time",
 		       diff.tv_sec,
 		       (unsigned long) (diff.tv_usec / USEC_PER_MSEC));
+#else
+		printf(" %14s: %llu.%03llu [sec]\n", "Total time",
+		       diff.tv_sec,
+		       (unsigned long long) (diff.tv_usec / USEC_PER_MSEC));
+#endif
 		break;
 	case BENCH_FORMAT_SIMPLE:
+#if defined(__x86_64__) && !defined(__ILP32__)
 		printf("%lu.%03lu\n", diff.tv_sec,
 		       (unsigned long) (diff.tv_usec / USEC_PER_MSEC));
+#else
+		printf("%llu.%03llu\n", diff.tv_sec,
+		       (unsigned long long) (diff.tv_usec / USEC_PER_MSEC));
+#endif
 		break;
 	default:
 		/* reaching here is something disaster */
--- linux-3.19/tools/perf/bench/sched-pipe.c~	2015-02-09 03:54:22.000000000 +0100
+++ linux-3.19/tools/perf/bench/sched-pipe.c	2015-04-11 12:34:32.727917841 +0200
@@ -156,9 +156,15 @@
 		result_usec = diff.tv_sec * 1000000;
 		result_usec += diff.tv_usec;
 
+#if defined(__x86_64__) && !defined(__ILP32__)
 		printf(" %14s: %lu.%03lu [sec]\n\n", "Total time",
 		       diff.tv_sec,
 		       (unsigned long) (diff.tv_usec / USEC_PER_MSEC));
+#else
+		printf(" %14s: %llu.%03llu [sec]\n\n", "Total time",
+		       diff.tv_sec,
+		       (unsigned long long) (diff.tv_usec / USEC_PER_MSEC));
+#endif
 
 		printf(" %14lf usecs/op\n",
 		       (double)result_usec / (double)loops);
@@ -168,9 +174,15 @@
 		break;
 
 	case BENCH_FORMAT_SIMPLE:
+#if defined(__x86_64__) && !defined(__ILP32__)
 		printf("%lu.%03lu\n",
 		       diff.tv_sec,
 		       (unsigned long) (diff.tv_usec / USEC_PER_MSEC));
+#else
+		printf("%llu.%03llu\n",
+		       diff.tv_sec,
+		       (unsigned long long) (diff.tv_usec / USEC_PER_MSEC));
+#endif
 		break;
 
 	default:
--- linux-3.19/tools/perf/builtin-kvm.c~	2015-02-09 03:54:22.000000000 +0100
+++ linux-3.19/tools/perf/builtin-kvm.c	2015-04-11 12:36:00.511251770 +0200
@@ -565,7 +565,11 @@
 	gettimeofday(&tv, NULL);
 	if (localtime_r(&tv.tv_sec, &ltime)) {
 		strftime(date, sizeof(date), "%H:%M:%S", &ltime);
+#if defined(__x86_64__) && !defined(__ILP32__)
 		pr_info("%s.%06ld", date, tv.tv_usec);
+#else
+		pr_info("%s.%06lld", date, tv.tv_usec);
+#endif
 	} else
 		pr_info("00:00:00.000000");
 
--- linux-5.1/tools/perf/arch/x86/util/unwind-libunwind.c.orig	2019-05-06 02:42:58.000000000 +0200
+++ linux-5.1/tools/perf/arch/x86/util/unwind-libunwind.c	2019-05-18 12:32:31.916685600 +0200
@@ -8,7 +8,7 @@
 #include "../../util/debug.h"
 #endif
 
-#ifdef HAVE_ARCH_X86_64_SUPPORT
+#if defined(HAVE_ARCH_X86_64_SUPPORT) || defined(HAVE_ARCH_X32_SUPPORT)
 int LIBUNWIND__ARCH_REG_ID(int regnum)
 {
 	int id;