diff options
| author | Kees Cook <keescook@chromium.org> | 2016-05-02 15:51:00 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-05-03 08:15:58 +0200 |
| commit | dc425a6e140bca99bdb4823e9909c9d9b8ba36b6 (patch) | |
| tree | b8d0da2590a05c1afe45492277bfb5bb729e0e65 /arch/x86/boot/compressed/Makefile | |
| parent | 4abf061bf87bbd856c8d60199b2fba8b8f9b9fd6 (diff) | |
| download | linux-dc425a6e140bca99bdb4823e9909c9d9b8ba36b6.tar.bz2 | |
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/Makefile')
| -rw-r--r-- | arch/x86/boot/compressed/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index 75f2233b8414..77ce3a04d46e 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -70,7 +70,7 @@ $(obj)/../voffset.h: vmlinux FORCE $(obj)/misc.o: $(obj)/../voffset.h vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ - $(obj)/string.o $(obj)/cmdline.o \ + $(obj)/string.o $(obj)/cmdline.o $(obj)/error.o \ $(obj)/piggy.o $(obj)/cpuflags.o vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o |