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From: Peter Zijlstra <peterz@infradead.org>
To: tglx@linutronix.de, jpoimboe@redhat.com
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
	peterz@infradead.org, mhiramat@kernel.org, mbenes@suse.cz,
	jthierry@redhat.com, alexandre.chartre@oracle.com
Subject: [PATCH v5 00/17] objtool: vmlinux.o and noinstr validation
Date: Thu, 16 Apr 2020 13:47:06 +0200	[thread overview]
Message-ID: <20200416114706.625340212@infradead.org> (raw)

As should be familiar by now; these patches implement the noinstr
(no-instrument) validation in objtool as requested by Thomas, to ensure
critical code (entry for now, idle later) run no unexpected code.

Functions are marked with: noinstr, which implies notrace, noinline and sticks
things in the .noinstr.text section. Such functions can then use instr_begin()
and instr_end() to allow calls to code outside of this section in sanctioned
areas.

On the way of getting there, it also fixes the x86/ftrace trampiline ORC
unwind.



             reply	other threads:[~2020-04-16 11:54 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-16 11:47 Peter Zijlstra [this message]
2020-04-16 11:47 ` [PATCH v5 01/17] objtool: Support multiple stack_op per instruction Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 02/17] objtool: Better handle IRET Peter Zijlstra
2020-04-17 11:29   ` Miroslav Benes
2020-04-17 12:25     ` Peter Zijlstra
2020-04-17 12:35       ` Miroslav Benes
2020-04-17 17:37   ` Alexandre Chartre
2020-04-17 18:23     ` Peter Zijlstra
2020-04-17 23:53       ` Andy Lutomirski
2020-04-18 17:18         ` Josh Poimboeuf
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 03/17] objtool: Introduce HINT_RET_OFFSET Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 04/17] x86,ftrace: Fix ftrace_regs_caller() unwind Peter Zijlstra
2020-04-17 19:24   ` Alexandre Chartre
2020-04-22  0:33   ` Steven Rostedt
2020-04-22  9:44     ` Peter Zijlstra
2020-04-22 13:33       ` Steven Rostedt
2020-04-22 20:20       ` Steven Rostedt
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 05/17] x86,ftrace: Use SIZEOF_PTREGS Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 06/17] x86,ftrace: Shrink ftrace_regs_caller() by one byte Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 07/17] objtool: Remove SAVE/RESTORE hints Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 08/17] objtool: Rename struct cfi_state Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 09/17] objtool: Fix !CFI insn_state propagation Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 10/17] objtool: Implement noinstr validation Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 11/17] objtool: Optimize !vmlinux.o again Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 12/17] objtool: Use sec_offset_hash() for insn_hash Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 13/17] kbuild/objtool: Add objtool-vmlinux.o pass Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 14/17] objtool: Avoid iterating !text section symbols Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 15/17] objtool: Rearrange validate_section() Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 16/17] objtool: Add STT_NOTYPE noinstr validation Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-23  7:49   ` tip-bot2 for Peter Zijlstra
2020-04-16 11:47 ` [PATCH v5 17/17] objtool: Also consider .entry.text as noinstr Peter Zijlstra
2020-04-22 22:24   ` [tip: objtool/core] " tip-bot2 for Thomas Gleixner
2020-04-23  7:49   ` tip-bot2 for Thomas Gleixner
2020-04-17 12:33 ` [PATCH v5 00/17] objtool: vmlinux.o and noinstr validation Miroslav Benes
2020-04-17 20:22 ` Alexandre Chartre

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