[PATCH v3 21/39] x86/ibt,ftrace: Add ENDBR to samples/ftrace

[Peter Zijlstra]

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 samples/ftrace/ftrace-direct-modify.c       |    5 +++++
 samples/ftrace/ftrace-direct-multi-modify.c |   10 +++++++---
 samples/ftrace/ftrace-direct-multi.c        |    5 ++++-
 samples/ftrace/ftrace-direct-too.c          |    3 +++
 samples/ftrace/ftrace-direct.c              |    3 +++
 5 files changed, 22 insertions(+), 4 deletions(-)

--- a/samples/ftrace/ftrace-direct-modify.c
+++ b/samples/ftrace/ftrace-direct-modify.c
@@ -24,20 +24,25 @@ static unsigned long my_ip = (unsigned l
 
 #ifdef CONFIG_X86_64
 
+#include <asm/ibt.h>
+
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
 "	.type		my_tramp1, @function\n"
 "	.globl		my_tramp1\n"
 "   my_tramp1:"
+	ASM_ENDBR
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	call my_direct_func1\n"
 "	leave\n"
 "	.size		my_tramp1, .-my_tramp1\n"
 	ASM_RET
+
 "	.type		my_tramp2, @function\n"
 "	.globl		my_tramp2\n"
 "   my_tramp2:"
+	ASM_ENDBR
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	call my_direct_func2\n"
--- a/samples/ftrace/ftrace-direct-multi-modify.c
+++ b/samples/ftrace/ftrace-direct-multi-modify.c
@@ -22,11 +22,14 @@ extern void my_tramp2(void *);
 
 #ifdef CONFIG_X86_64
 
+#include <asm/ibt.h>
+
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
 "	.type		my_tramp1, @function\n"
 "	.globl		my_tramp1\n"
 "   my_tramp1:"
+	ASM_ENDBR
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	pushq %rdi\n"
@@ -34,12 +37,13 @@ asm (
 "	call my_direct_func1\n"
 "	popq %rdi\n"
 "	leave\n"
-"	ret\n"
+	ASM_RET
 "	.size		my_tramp1, .-my_tramp1\n"
+
 "	.type		my_tramp2, @function\n"
-"\n"
 "	.globl		my_tramp2\n"
 "   my_tramp2:"
+	ASM_ENDBR
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	pushq %rdi\n"
@@ -47,7 +51,7 @@ asm (
 "	call my_direct_func2\n"
 "	popq %rdi\n"
 "	leave\n"
-"	ret\n"
+	ASM_RET
 "	.size		my_tramp2, .-my_tramp2\n"
 "	.popsection\n"
 );
--- a/samples/ftrace/ftrace-direct-multi.c
+++ b/samples/ftrace/ftrace-direct-multi.c
@@ -17,11 +17,14 @@ extern void my_tramp(void *);
 
 #ifdef CONFIG_X86_64
 
+#include <asm/ibt.h>
+
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
 "	.type		my_tramp, @function\n"
 "	.globl		my_tramp\n"
 "   my_tramp:"
+	ASM_ENDBR
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	pushq %rdi\n"
@@ -29,7 +32,7 @@ asm (
 "	call my_direct_func\n"
 "	popq %rdi\n"
 "	leave\n"
-"	ret\n"
+	ASM_RET
 "	.size		my_tramp, .-my_tramp\n"
 "	.popsection\n"
 );
--- a/samples/ftrace/ftrace-direct-too.c
+++ b/samples/ftrace/ftrace-direct-too.c
@@ -19,11 +19,14 @@ extern void my_tramp(void *);
 
 #ifdef CONFIG_X86_64
 
+#include <asm/ibt.h>
+
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
 "	.type		my_tramp, @function\n"
 "	.globl		my_tramp\n"
 "   my_tramp:"
+	ASM_ENDBR
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	pushq %rdi\n"
--- a/samples/ftrace/ftrace-direct.c
+++ b/samples/ftrace/ftrace-direct.c
@@ -16,11 +16,14 @@ extern void my_tramp(void *);
 
 #ifdef CONFIG_X86_64
 
+#include <asm/ibt.h>
+
 asm (
 "	.pushsection    .text, \"ax\", @progbits\n"
 "	.type		my_tramp, @function\n"
 "	.globl		my_tramp\n"
 "   my_tramp:"
+	ASM_ENDBR
 "	pushq %rbp\n"
 "	movq %rsp, %rbp\n"
 "	pushq %rdi\n"