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

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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
This commit is contained in:
Peter Zijlstra 2022-03-08 16:30:34 +01:00
parent 5891271055
commit 0aec21cfb5
5 changed files with 22 additions and 4 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
samples/ftrace/ftrace-direct-modify.c
View file

@ -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"

10
samples/ftrace/ftrace-direct-multi-modify.c
View file

@ -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"
);

5
samples/ftrace/ftrace-direct-multi.c
View file

@ -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"
);

3
samples/ftrace/ftrace-direct-too.c
View file

@ -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"

3
samples/ftrace/ftrace-direct.c
View file

@ -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"