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9d9c22cc44
linux/arch/x86/lib
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Borislav Petkov (AMD) 9d9c22cc44 x86/retpoline: Document some thunk handling aspects 
After a lot of experimenting (see thread Link points to) document for
now the issues and requirements for future improvements to the thunk
handling and potential issuing of a diagnostic when the default thunk
hasn't been patched out.

This documentation is only temporary and that close before the merge
window it is only a placeholder for those future improvements.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231010171020.462211-1-david.kaplan@amd.com
2023-10-20 13:17:14 +02:00
..
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
atomic64_32.c
atomic64_386_32.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
atomic64_cx8_32.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
cache-smp.c smp: Remove smp_call_function() and on_each_cpu() return values 2019-06-23 14:26:26 +02:00
checksum_32.S x86/checksum_32: Remove .fixup usage 2021-12-11 09:09:49 +01:00
clear_page_64.S x86: improve on the non-rep 'clear_user' function 2023-04-18 17:05:28 -07:00
cmdline.c x86/lib: Fix compiler and kernel-doc warnings 2023-01-03 18:46:21 +01:00
cmpxchg8b_emu.S percpu: Wire up cmpxchg128 2023-06-05 09:36:37 +02:00
cmpxchg16b_emu.S percpu: Wire up cmpxchg128 2023-06-05 09:36:37 +02:00
copy_mc_64.S x86/copy_mc_64: Remove .fixup usage 2021-12-11 09:09:46 +01:00
copy_mc.c x86, libnvdimm/test: Remove COPY_MC_TEST 2020-10-26 18:08:35 +01:00
copy_page_64.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
copy_user_64.S x86: bring back rep movsq for user access on CPUs without ERMS 2023-08-30 09:45:12 -07:00
copy_user_uncached_64.S x86: rewrite '__copy_user_nocache' function 2023-04-20 18:53:49 -07:00
cpu.c x86/lib/cpu: Address missing prototypes warning 2019-08-08 08:25:53 +02:00
csum-copy_64.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
csum-partial_64.c x86/csum: Fix clang -Wuninitialized in csum_partial() 2023-05-29 06:52:32 -07:00
csum-wrappers_64.c net: unexport csum_and_copy_{from,to}_user 2022-04-29 14:37:59 -07:00
delay.c x86/delay: Fix the wrong asm constraint in delay_loop() 2022-04-05 21:21:57 +02:00
error-inject.c x86/error_inject: Align function properly 2022-10-17 16:40:59 +02:00
getuser.S x86/lib: Make get/put_user() exception handling a visible symbol 2023-06-02 10:51:46 +02:00
hweight.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
inat.c x86/insn: Add a __ignore_sync_check__ marker 2021-03-15 11:00:57 +01:00
insn-eval.c x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type 2023-01-03 18:46:06 +01:00
insn.c x86/insn: Use get_unaligned() instead of memcpy() 2021-10-06 11:56:37 +02:00
iomap_copy_64.S x86/asm: Fix an assembler warning with current binutils 2023-01-03 17:55:11 +01:00
iomem.c x86: kmsan: handle open-coded assembly in lib/iomem.c 2022-10-03 14:03:24 -07:00
kaslr.c x86/kaslr: Fix build warning in KASLR code in boot stub 2022-04-11 09:41:12 +02:00
Makefile percpu: Wire up cmpxchg128 2023-06-05 09:36:37 +02:00
memcpy_32.c x86/mem: Move memmove to out of line assembler 2022-11-01 15:44:07 -07:00
memcpy_64.S x86/asm: Fix build of UML with KASAN 2023-09-18 19:30:08 +02:00
memmove_32.S x86/mem: Move memmove to out of line assembler 2022-11-01 15:44:07 -07:00
memmove_64.S x86/asm: Fix build of UML with KASAN 2023-09-18 19:30:08 +02:00
memset_64.S x86/asm: Fix build of UML with KASAN 2023-09-18 19:30:08 +02:00
misc.c x86/lib: Include <asm/misc.h> to fix a missing prototypes warning at build time 2023-01-03 11:11:03 +01:00
msr-reg-export.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
msr-reg.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
msr-smp.c x86/msr: Fix wr/rdmsr_safe_regs_on_cpu() prototypes 2021-03-22 21:37:03 +01:00
msr.c x86/lib/msr: Clean up kernel-doc notation 2023-06-06 15:19:50 +02:00
pc-conf-reg.c x86: Add support for 0x22/0x23 port I/O configuration space 2021-08-10 23:31:43 +02:00
putuser.S x86/ibt: Avoid duplicate ENDBR in __put_user_nocheck*() 2023-09-12 17:51:24 +02:00
retpoline.S x86/retpoline: Document some thunk handling aspects 2023-10-20 13:17:14 +02:00
string_32.c lib/string: Move helper functions out of string.c 2021-09-25 08:20:49 -07:00
strstr_32.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
usercopy_32.c x86/usercopy: Remove .fixup usage 2021-12-11 09:09:50 +01:00
usercopy_64.c x86/usercopy: Include arch_wb_cache_pmem() declaration 2023-05-18 11:56:18 -07:00
usercopy.c x86/uaccess: instrument copy_from_user_nmi() 2022-11-08 15:57:24 -08:00
x86-opcode-map.txt x86/opcode: Add the LKGS instruction to x86-opcode-map 2023-01-12 13:06:36 +01:00