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Chao Fan 33f0df8d84 x86/boot: Search for RSDP in the EFI tables 
The immovable memory ranges information in the SRAT table is necessary
to fix the issue of KASLR not paying attention to movable memory regions
when selecting the offset. Therefore, SRAT needs to be parsed.

Depending on the boot: KEXEC/EFI/BIOS, the methods to compute RSDP are
different. When booting from EFI, the EFI table points to the RSDP. So
iterate over the EFI system tables in order to find the RSDP.

 [ bp:
   - Heavily massage commit message
   - Trim comments
   - Move the CONFIG_ACPI ifdeffery into the Makefile.
 ]

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/20190123110850.12433-4-fanc.fnst@cn.fujitsu.com
2019-02-01 11:52:54 +01:00
..
alpha
Merge tag 'kbuild-v4.21-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2019-01-06 16:33:10 -08:00
arc
ARCv2: lib: memeset: fix doing prefetchw outside of buffer
2019-01-17 16:24:39 -08:00
arm
arm64/xen: fix xen-swiotlb cache flushing
2019-01-23 22:14:56 +01:00
arm64
arm64/xen: fix xen-swiotlb cache flushing
2019-01-23 22:14:56 +01:00
c6x
arch: restore generic-y += shmparam.h for some architectures
2019-01-06 18:16:11 -08:00
csky
csky: fixup compile error with CPU 810.
2019-01-10 04:37:37 -08:00
h8300
kbuild: remove unused archmrproper
2019-01-16 23:31:17 +09:00
hexagon
arch: restore generic-y += shmparam.h for some architectures
2019-01-06 18:16:11 -08:00
ia64
ia64: remove redundant 'export AWK'
2019-01-16 23:31:18 +09:00
m68k
arch: restore generic-y += shmparam.h for some architectures
2019-01-06 18:16:11 -08:00
microblaze
arch: restore generic-y += shmparam.h for some architectures
2019-01-06 18:16:11 -08:00
mips
Merge tag 'mips_fixes_5.0_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
2019-01-20 10:33:18 +12:00
nds32
nds32: remove unneeded code in arch/nds32/Makefile
2019-01-17 23:42:37 +09:00
nios2
arch: remove redundant UAPI generic-y defines
2019-01-06 10:22:15 +09:00
openrisc
openrisc: remove unneeded code in arch/openrisc/Makefile
2019-01-17 23:42:59 +09:00
parisc
arch: remove redundant UAPI generic-y defines
2019-01-06 10:22:15 +09:00
powerpc
Merge tag 'devicetree-fixes-for-5.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
2019-01-20 10:28:46 +12:00
riscv
Fix a handful of audit-related issue
2019-01-07 08:45:47 -08:00
s390
s390/smp: Fix calling smp_call_ipl_cpu() from ipl CPU
2019-01-11 17:12:03 +01:00
sh
Merge tag 'kbuild-v4.21-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2019-01-06 16:33:10 -08:00
sparc
arch: remove redundant UAPI generic-y defines
2019-01-06 10:22:15 +09:00
um
Merge branch 'akpm' (patches from Andrew)
2019-01-05 09:16:18 -08:00
unicore32
arch: restore generic-y += shmparam.h for some architectures
2019-01-06 18:16:11 -08:00
x86
x86/boot: Search for RSDP in the EFI tables
2019-02-01 11:52:54 +01:00
xtensa
arch: remove redundant UAPI generic-y defines
2019-01-06 10:22:15 +09:00
.gitignore
…
Kconfig
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00