diff options
| author | Kees Cook <keescook@chromium.org> | 2016-05-03 01:51:00 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-05-03 09:15:58 +0300 |
| commit | dc425a6e140bca99bdb4823e9909c9d9b8ba36b6 (patch) | |
| tree | b8d0da2590a05c1afe45492277bfb5bb729e0e65 /arch/x86/boot/compressed/string.c | |
| parent | 4abf061bf87bbd856c8d60199b2fba8b8f9b9fd6 (diff) | |
| download | linux-dc425a6e140bca99bdb4823e9909c9d9b8ba36b6.tar.xz | |
x86/boot: Extract error reporting functions
Currently to use warn(), a caller would need to include misc.h. However,
this means they would get the (unavailable during compressed boot)
gcc built-in memcpy family of functions. But since string.c is defining
these memcpy functions for use by misc.c, we end up in a weird circular
dependency.
To break this loop, move the error reporting functions outside of misc.c
with their own header so that they can be independently included by
other sources. Since the screen-writing routines use memmove(), keep the
low-level *_putstr() functions in misc.c.
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Lasse Collin <lasse.collin@tukaani.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1462229461-3370-2-git-send-email-keescook@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/boot/compressed/string.c')
| -rw-r--r-- | arch/x86/boot/compressed/string.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/string.c b/arch/x86/boot/compressed/string.c index 2befeca1aada..faa4dc7dc66b 100644 --- a/arch/x86/boot/compressed/string.c +++ b/arch/x86/boot/compressed/string.c @@ -5,6 +5,8 @@ * trust the gcc built-in implementations as they may do unexpected things * (e.g. FPU ops) in the minimal decompression stub execution environment. */ +#include "error.h" + #include "../string.c" #ifdef CONFIG_X86_32 |