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156ff4a544
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Peter Zijlstra 156ff4a544 x86/ibt: Base IBT bits 
Add Kconfig, Makefile and basic instruction support for x86 IBT.

(Ab)use __DISABLE_EXPORTS to disable IBT since it's already employed
to mark compressed and purgatory. Additionally mark realmode with it
as well to avoid inserting ENDBR instructions there. While ENDBR is
technically a NOP, inserting them was causing some grief due to code
growth. There's also a problem with using __noendbr in code compiled
without -fcf-protection=branch.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154317.519875203@infradead.org
2022-03-15 10:32:33 +01:00
..
alpha bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
arc bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
arm ARM: Spectre-BHB: provide empty stub for non-config 2022-03-11 12:42:49 -08:00
arm64 Merge branch 'arm64/for-next/linkage' 2022-03-15 10:32:31 +01:00
csky bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
h8300 bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
hexagon bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
ia64 ia64: make IA64_MCA_RECOVERY bool instead of tristate 2022-01-30 09:56:58 +02:00
m68k bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
microblaze Kbuild updates for v5.17 2022-01-19 11:15:19 +02:00
mips MIPS: ralink: mt7621: use bitwise NOT instead of logical 2022-03-01 10:08:45 +01:00
nds32 Kbuild updates for v5.17 2022-01-19 11:15:19 +02:00
nios2 Kbuild updates for v5.17 2022-01-19 11:15:19 +02:00
openrisc bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
parisc parisc/unaligned: Fix ldw() and stw() unalignment handlers 2022-02-23 18:01:06 +01:00
powerpc powerpc: Fix STACKTRACE=n build 2022-03-07 10:26:20 +11:00
riscv RISC-V Fixes for 5.17-rc8 2022-03-11 12:28:21 -08:00
s390 s390 updates for 5.17-rc7 2022-03-05 11:25:26 -08:00
sh bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
sparc bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
um virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes 2022-01-18 10:05:48 +02:00
x86 x86/ibt: Base IBT bits 2022-03-15 10:32:33 +01:00
xtensa bitmap patches for 5.17-rc1 2022-01-23 06:20:44 +02:00
.gitignore
Kconfig Merge branch 'akpm' (patches from Andrew) 2022-01-20 10:41:01 +02:00