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Subject[RFC PATCH v4 0/9] Control Flow Enforcement: Branch Tracking, PTRACE
Date
The previous version of CET patches can be found in the following
link:

https://lkml.org/lkml/2018/8/30/582

Summary of changes from v3:

Move IBT legacy code bitmap allocation back to when the application
requests it. Most application do not need the bitmap. It is only
used when an application does dlopen() a legacy library.

In the previous version, we pre-allocated the bitmap for every IBT-
enabled application to avoid creating a hole in the linear address.
However, this created a problem when the system has limited memory.

H.J. Lu (1):
x86: Insert endbr32/endbr64 to vDSO

Yu-cheng Yu (8):
x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking
x86/cet/ibt: User-mode indirect branch tracking support
x86/cet/ibt: Add IBT legacy code bitmap allocation function
mm/mmap: Add IBT bitmap size to address space limit check
x86/cet/ibt: ELF header parsing for IBT
x86/cet/ibt: Add arch_prctl functions for IBT
x86/cet/ibt: Add ENDBR to op-code-map
x86/cet: Add PTRACE interface for CET

arch/x86/Kconfig | 12 +++
arch/x86/Makefile | 7 ++
arch/x86/entry/vdso/.gitignore | 4 +
arch/x86/entry/vdso/Makefile | 12 ++-
arch/x86/entry/vdso/vdso-layout.lds.S | 1 +
arch/x86/include/asm/cet.h | 8 ++
arch/x86/include/asm/disabled-features.h | 8 +-
arch/x86/include/asm/fpu/regset.h | 7 +-
arch/x86/include/uapi/asm/elf_property.h | 1 +
arch/x86/include/uapi/asm/prctl.h | 1 +
arch/x86/include/uapi/asm/resource.h | 5 ++
arch/x86/kernel/cet.c | 76 +++++++++++++++++++
arch/x86/kernel/cet_prctl.c | 38 +++++++++-
arch/x86/kernel/cpu/common.c | 20 ++++-
arch/x86/kernel/elf.c | 8 +-
arch/x86/kernel/fpu/regset.c | 41 ++++++++++
arch/x86/kernel/process.c | 2 +
arch/x86/kernel/ptrace.c | 16 ++++
arch/x86/lib/x86-opcode-map.txt | 13 +++-
include/uapi/asm-generic/resource.h | 3 +
include/uapi/linux/elf.h | 1 +
mm/mmap.c | 12 ++-
tools/objtool/arch/x86/lib/x86-opcode-map.txt | 13 +++-
23 files changed, 296 insertions(+), 13 deletions(-)

--
2.17.1

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