Arvind Sankar e78d334a54 x86/boot: Mark global variables as static ... Mike Lothian reports that after commit 964124a97b ("efi/x86: Remove extra headroom for setup block") gcc 10.1.0 fails with HOSTCC arch/x86/boot/tools/build /usr/lib/gcc/x86_64-pc-linux-gnu/10.1.0/../../../../x86_64-pc-linux-gnu/bin/ld: error: linker defined: multiple definition of '_end' /usr/lib/gcc/x86_64-pc-linux-gnu/10.1.0/../../../../x86_64-pc-linux-gnu/bin/ld: /tmp/ccEkW0jM.o: previous definition here collect2: error: ld returned 1 exit status make[1]: *** [scripts/Makefile.host:103: arch/x86/boot/tools/build] Error 1 make: *** [arch/x86/Makefile:303: bzImage] Error 2 The issue is with the _end variable that was added, to hold the end of the compressed kernel from zoffsets.h (ZO__end). The name clashes with the linker-defined _end symbol that indicates the end of the build program itself. Even when there is no compile-time error, this causes build to use memory past the end of its .bss section. To solve this, mark _end as static, and for symmetry, mark the rest of the variables that keep track of symbols from the compressed kernel as static as well. Fixes: 964124a97b ("efi/x86: Remove extra headroom for setup block") Reported-by: Mike Lothian <mike@fireburn.co.uk> Tested-by: Mike Lothian <mike@fireburn.co.uk> Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu> Link: https://lore.kernel.org/r/20200511225849.1311869-1-nivedita@alum.mit.edu Signed-off-by: Ard Biesheuvel <ardb@kernel.org>		2020-05-14 11:11:20 +02:00
..
compressed	SPDX patches for 5.7-rc1.	2020-04-03 13:12:26 -07:00
tools	x86/boot: Mark global variables as static	2020-05-14 11:11:20 +02:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
Makefile	Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-03-31 10:28:35 -07:00
a20.c	…
apm.c	x86/boot: Fix comment spelling	2020-03-17 20:52:52 +01:00
bioscall.S	…
bitops.h	…
boot.h	…
cmdline.c	…
code16gcc.h	…
copy.S	x86/asm: Do not annotate functions with GLOBAL	2019-10-18 11:25:58 +02:00
cpu.c	…
cpucheck.c	…
cpuflags.c	…
cpuflags.h	…
ctype.h	…
early_serial_console.c	…
edd.c	…
genimage.sh	…
header.S	efi/x86: Add kernel preferred address to PE header	2020-03-08 09:58:20 +01:00
install.sh	…
main.c	…
memory.c	…
mkcpustr.c	x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_*	2020-01-13 18:36:02 +01:00
mtools.conf.in	…
pm.c	…
pmjump.S	x86/asm: Do not annotate functions with GLOBAL	2019-10-18 11:25:58 +02:00
printf.c	…
regs.c	…
setup.ld	x86/vmlinux: Drop unneeded linker script discard of .eh_frame	2020-02-25 14:51:29 +01:00
string.c	…
string.h	…
tty.c	…
version.c	…
vesa.h	…
video-bios.c	…
video-mode.c	…
video-vesa.c	…
video-vga.c	…
video.c	…
video.h	…