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Subject[tip: x86/core] x86/ibt,ftrace: Add ENDBR to samples/ftrace
The following commit has been merged into the x86/core branch of tip:

Commit-ID: cba7a74a1b138c2b7379c88fbbe7c6b94d5bd180
Gitweb: https://git.kernel.org/tip/cba7a74a1b138c2b7379c88fbbe7c6b94d5bd180
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Tue, 08 Mar 2022 16:30:34 +01:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Tue, 08 Mar 2022 23:53:33 +01:00

x86/ibt,ftrace: Add ENDBR to samples/ftrace

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154318.523421433@infradead.org
---
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(-)

diff --git a/samples/ftrace/ftrace-direct-modify.c b/samples/ftrace/ftrace-direct-modify.c
index 2c7c318..39146fa 100644
--- a/samples/ftrace/ftrace-direct-modify.c
+++ b/samples/ftrace/ftrace-direct-modify.c
@@ -24,20 +24,25 @@ static unsigned long my_ip = (unsigned long)schedule;

#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"
diff --git a/samples/ftrace/ftrace-direct-multi-modify.c b/samples/ftrace/ftrace-direct-multi-modify.c
index 6f43a39..65aa94d 100644
--- 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"
);
diff --git a/samples/ftrace/ftrace-direct-multi.c b/samples/ftrace/ftrace-direct-multi.c
index 2fafc9a..41ded7c 100644
--- 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"
);
diff --git a/samples/ftrace/ftrace-direct-too.c b/samples/ftrace/ftrace-direct-too.c
index c93fb0e..6690468 100644
--- 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"
diff --git a/samples/ftrace/ftrace-direct.c b/samples/ftrace/ftrace-direct.c
index 8b551e5..e8f1e44 100644
--- 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"
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