diff options
| author | Chao Fan <fanc.fnst@cn.fujitsu.com> | 2019-01-23 19:08:44 +0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2019-02-01 11:52:54 +0100 |
| commit | de50ce20cd05da4d1a7e5709a12fc23bc0b66be9 (patch) | |
| tree | 808e2d47c18ab283d298c5093f54732845e8d2ee /arch/x86/boot/string.h | |
| parent | ac09c5f43cf613939850cc38d7a34ae6556016ba (diff) | |
x86/boot: Copy kstrtoull() to boot/string.c
Copy kstrtoull() and the other necessary functions from lib/kstrtox.c
to boot/string.c so that code in boot/ can use kstrtoull() and the old
simple_strtoull() can gradually be phased out.
Using div_u64() from math64.h directly will cause the dividend to be
handled as a 64-bit value and cause the infamous __divdi3 linker error
due to gcc trying to use its library function for the 64-bit division.
Therefore, separate the dividend into an upper and lower part.
[ bp: Rewrite commit message. ]
Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: bhe@redhat.com
Cc: caoj.fnst@cn.fujitsu.com
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: indou.takao@jp.fujitsu.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: kasong@redhat.com
Cc: Kees Cook <keescook@chromium.org>
Cc: msys.mizuma@gmail.com
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190123110850.12433-2-fanc.fnst@cn.fujitsu.com
Diffstat (limited to 'arch/x86/boot/string.h')
| -rw-r--r-- | arch/x86/boot/string.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/boot/string.h b/arch/x86/boot/string.h index 3d78e27077f4..38d8f2f5e47e 100644 --- a/arch/x86/boot/string.h +++ b/arch/x86/boot/string.h @@ -29,4 +29,5 @@ extern unsigned int atou(const char *s); extern unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base); +int kstrtoull(const char *s, unsigned int base, unsigned long long *res); #endif /* BOOT_STRING_H */ |