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2238246ff8
linux/arch/x86/boot
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Xiaoyao Li 2238246ff8 x86/boot: Make the GDT 8-byte aligned 
The segment descriptors are loaded with an implicitly LOCK-ed instruction,
which could trigger the split lock #AC exception if the variable is not
properly aligned and crosses a cache line.

Align the GDT properly so the descriptors are all 8 byte aligned.

Signed-off-by: Xiaoyao Li <xiaoyao.li@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lkml.kernel.org/r/20190627045525.105266-1-xiaoyao.li@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-06-27 10:56:11 +02:00
..
compressed x86/boot: Make the GDT 8-byte aligned 2019-06-27 10:56:11 +02:00
tools x86/boot: Add missing va_end() to die() 2018-11-28 20:06:07 +01:00
.gitignore x86/build: Add more generated files to the .gitignore file 2017-11-07 11:22:21 +01:00
a20.c
apm.c
bioscall.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 83 2019-05-24 17:37:52 +02:00
bitops.h x86/boot: Use CC_SET()/CC_OUT() instead of open coding it 2018-08-02 14:30:42 +02:00
boot.h x86/boot: Simplify the detect_memory*() control flow 2018-11-06 21:05:01 +01:00
cmdline.c
code16gcc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
copy.S x86/boot: Remove unused copy_*_gs() functions 2017-06-05 09:35:16 +02:00
cpu.c Revert "x86/boot: Fail the boot if !M486 and CPUID is missing" 2016-12-19 11:54:20 +01:00
cpucheck.c x86: Clean up 'sizeof x' => 'sizeof(x)' 2018-10-29 07:13:28 +01:00
cpuflags.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpuflags.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctype.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
early_serial_console.c x86: Clean up 'sizeof x' => 'sizeof(x)' 2018-10-29 07:13:28 +01:00
edd.c x86: Clean up 'sizeof x' => 'sizeof(x)' 2018-10-29 07:13:28 +01:00
genimage.sh x86/build: Make isoimage work on Debian 2017-12-16 16:23:31 +01:00
header.S x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header") 2018-11-20 09:43:10 +01:00
install.sh
main.c x86: Clean up 'sizeof x' => 'sizeof(x)' 2018-10-29 07:13:28 +01:00
Makefile x86/build: Specify elf_i386 linker emulation explicitly for i386 objects 2019-01-12 00:11:39 +01:00
memory.c x86/boot: Simplify the detect_memory*() control flow 2018-11-06 21:05:01 +01:00
mkcpustr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 83 2019-05-24 17:37:52 +02:00
mtools.conf.in
pm.c
pmjump.S
printf.c
regs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 83 2019-05-24 17:37:52 +02:00
setup.ld x86/build: Use the single-argument OUTPUT_FORMAT() linker script command 2019-01-16 12:21:53 +01:00
string.c x86/boot: Restrict header scope to make Clang happy 2019-03-21 12:24:38 +01:00
string.h x86/boot: Copy kstrtoull() to boot/string.c 2019-02-01 11:52:54 +01:00
tty.c
version.c
vesa.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 48 2019-05-24 17:27:13 +02:00
video-bios.c
video-mode.c x86/mm: Fix regression with huge pages on PAE 2015-12-04 09:14:27 +01:00
video-vesa.c x86: Clean up 'sizeof x' => 'sizeof(x)' 2018-10-29 07:13:28 +01:00
video-vga.c x86: Use ARRAY_SIZE 2017-10-19 16:15:47 +02:00
video.c x86: Clean up 'sizeof x' => 'sizeof(x)' 2018-10-29 07:13:28 +01:00
video.h