From: Andy Lutomirski <luto@kernel.org>
To: x86@kernel.org
Cc: LKML <linux-kernel@vger.kernel.org>,
"Christopherson, Sean J" <sean.j.christopherson@intel.com>,
Andy Lutomirski <luto@kernel.org>
Subject: [PATCH 0/2] Clean up x86_32 stackprotector
Date: Mon, 5 Oct 2020 12:30:02 -0700 [thread overview]
Message-ID: <cover.1601925251.git.luto@kernel.org> (raw)
x86_32 stackprotector is a maintenance nightmare. Clean it up. This
disables stackprotector on x86_32 on GCC 8.1 and on all clang
versions -- I'll file a bug for the latter.
Andy Lutomirski (2):
x86/stackprotector/32: Make the canary into a regular percpu variable
x86/entry/32: Remove leftover macros after stackprotector cleanups
arch/x86/Kconfig | 7 +-
arch/x86/Makefile | 4 +
arch/x86/entry/entry_32.S | 95 +----------------------
arch/x86/include/asm/processor.h | 15 +---
arch/x86/include/asm/ptrace.h | 5 +-
arch/x86/include/asm/segment.h | 27 ++-----
arch/x86/include/asm/stackprotector.h | 79 ++++---------------
arch/x86/include/asm/suspend_32.h | 2 -
arch/x86/kernel/asm-offsets_32.c | 5 --
arch/x86/kernel/cpu/common.c | 5 +-
arch/x86/kernel/doublefault_32.c | 4 +-
arch/x86/kernel/head_32.S | 18 +----
arch/x86/kernel/setup_percpu.c | 1 -
arch/x86/kernel/tls.c | 8 +-
arch/x86/kvm/svm/svm.c | 11 +--
arch/x86/lib/insn-eval.c | 4 -
arch/x86/platform/pvh/head.S | 14 ----
arch/x86/power/cpu.c | 6 +-
scripts/gcc-x86_32-has-stack-protector.sh | 6 +-
19 files changed, 56 insertions(+), 260 deletions(-)
--
2.26.2
next reply other threads:[~2020-10-05 19:30 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-05 19:30 Andy Lutomirski [this message]
2020-10-05 19:30 ` [PATCH 1/2] x86/stackprotector/32: Make the canary into a regular percpu variable Andy Lutomirski
2020-10-06 2:29 ` Sean Christopherson
2020-10-06 4:51 ` Andy Lutomirski
2020-10-06 8:26 ` Peter Zijlstra
2020-10-06 17:14 ` Brian Gerst
2020-10-07 1:16 ` Andy Lutomirski
2020-10-07 7:03 ` kernel test robot
2020-10-05 19:30 ` [PATCH 2/2] x86/entry/32: Remove leftover macros after stackprotector cleanups Andy Lutomirski
2020-10-06 8:34 ` Peter Zijlstra
2020-10-05 23:10 ` [PATCH 0/2] Clean up x86_32 stackprotector Brian Gerst
2020-10-06 8:32 ` Peter Zijlstra
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