linux-kernel - [PATCH 0/4] x86-32: Clean up GS segment handling

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Message-Id: <20220325153953.162643-1-brgerst@gmail.com>
Date:   Fri, 25 Mar 2022 11:39:49 -0400
From:   Brian Gerst <brgerst@...il.com>
To:     linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     Andy Lutomirski <luto@...nel.org>, Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Brian Gerst <brgerst@...il.com>
Subject: [PATCH 0/4] x86-32: Clean up GS segment handling

Since commit 3fb0fdb3bbe ("Make the canary into a regular percpu
variable"), the GS segment is no longer switched on kernel entry for
32-bit kernels.  Clean up the remaining code that handled lazy GS
switching.

Brian Gerst (4):
  x86-32: Simplify ELF_CORE_COPY_REGS
  ELF: Remove elf_core_copy_kernel_regs()
  x86-32: Remove lazy GS macros
  x86: Merge load_gs_index()

 arch/powerpc/kernel/fadump.c               |  2 +-
 arch/powerpc/platforms/powernv/opal-core.c |  2 +-
 arch/x86/include/asm/elf.h                 | 15 ++-------------
 arch/x86/include/asm/mmu_context.h         |  2 +-
 arch/x86/include/asm/segment.h             | 12 ------------
 arch/x86/include/asm/special_insns.h       |  7 ++++---
 arch/x86/kernel/process.c                  |  5 +----
 arch/x86/kernel/process_32.c               | 11 ++++-------
 arch/x86/kernel/ptrace.c                   |  6 +++---
 arch/x86/kernel/signal.c                   |  8 +++++---
 arch/x86/kernel/vm86_32.c                  |  4 ++--
 arch/x86/lib/insn-eval.c                   |  5 +++--
 arch/x86/math-emu/get_address.c            |  2 +-
 include/linux/elfcore.h                    |  9 ---------
 kernel/kexec_core.c                        |  2 +-
 15 files changed, 29 insertions(+), 63 deletions(-)

-- 
2.35.1