From: Ingo Molnar <mingo@kernel.org>
To: Borislav Petkov <bp@alien8.de>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
live-patching@vger.kernel.org, Michal Marek <mmarek@suse.cz>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andi Kleen <andi@firstfloor.org>, Pedro Alves <palves@redhat.com>,
Namhyung Kim <namhyung@gmail.com>,
Bernd Petrovitsch <bernd@petrovitsch.priv.at>,
Chris J Arges <chris.j.arges@canonical.com>,
Andrew Morton <akpm@linux-foundation.org>,
Jiri Slaby <jslaby@suse.cz>,
Arnaldo Carvalho de Melo <acme@kernel.org>
Subject: Re: [PATCH v15 13/25] x86/reboot: Add ljmp instructions to stacktool whitelist
Date: Fri, 15 Jan 2016 12:13:45 +0100 [thread overview]
Message-ID: <20160115111345.GA27556@gmail.com> (raw)
In-Reply-To: <20160115111128.GD25104@pd.tnic>
* Borislav Petkov <bp@alien8.de> wrote:
> On Fri, Jan 15, 2016 at 12:00:00PM +0100, Ingo Molnar wrote:
> > All of the cases Josh listed involve some sort of special case where we do
> > something non-standard. (Where 'standard' == 'regular kernel C function'.)
>
> My only worry is that next time we have to do something non-standard,
> we'll have to annotate it as well. bpf_jit case-in-point.
but that's generally OK: it's not a problem if something non-standard is visibly
non-standard on the source code level as well.
> OTOH, I guess the generic, tool-agnostic annotation could be a step in the
> (more-)right direction as we're saying "we're doing something special here, and
> we're stating that fact with this here annotation."
Yeah, I think so too!
Thanks,
Ingo
next prev parent reply other threads:[~2016-01-15 11:13 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-18 12:39 [PATCH v15 00/25] Compile-time stack metadata validation Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 01/25] tools: Fix formatting of the "make -C tools" help message Josh Poimboeuf
2016-01-13 9:40 ` [tip:perf/urgent] " tip-bot for Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 02/25] tools: Make list.h self-sufficient Josh Poimboeuf
2016-01-12 12:35 ` Borislav Petkov
2016-01-12 14:54 ` Arnaldo Carvalho de Melo
2016-01-12 15:59 ` Borislav Petkov
2016-01-12 17:16 ` Arnaldo Carvalho de Melo
2016-01-13 9:40 ` [tip:perf/urgent] " tip-bot for Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 03/25] tools subcmd: Add missing NORETURN define for parse-options.h Josh Poimboeuf
2016-01-13 9:41 ` [tip:perf/urgent] " tip-bot for Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 04/25] x86/asm: Frame pointer macro cleanup Josh Poimboeuf
2016-01-19 13:39 ` [tip:x86/asm] x86/asm: Clean up frame pointer macros tip-bot for Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 05/25] x86/asm: Add C versions of " Josh Poimboeuf
2016-01-19 13:40 ` [tip:x86/asm] " tip-bot for Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 06/25] x86/stacktool: Compile-time stack metadata validation Josh Poimboeuf
2016-01-12 14:48 ` Borislav Petkov
2016-01-12 15:06 ` Josh Poimboeuf
2016-01-12 16:10 ` Borislav Petkov
2016-01-19 12:02 ` Ingo Molnar
2015-12-18 12:39 ` [PATCH v15 07/25] x86/stacktool: Add file and directory ignores Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 08/25] x86/stacktool: Add ignore macros Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 09/25] x86/xen: Add stack frame dependency to hypercall inline asm calls Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 10/25] x86/paravirt: Add stack frame dependency to PVOP " Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 11/25] x86/paravirt: Create a stack frame in PV_CALLEE_SAVE_REGS_THUNK Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 12/25] x86/amd: Set ELF function type for vide() Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 13/25] x86/reboot: Add ljmp instructions to stacktool whitelist Josh Poimboeuf
2016-01-12 16:47 ` Borislav Petkov
2016-01-12 17:43 ` Josh Poimboeuf
2016-01-12 17:55 ` Borislav Petkov
2016-01-12 18:56 ` Josh Poimboeuf
2016-01-12 19:37 ` Borislav Petkov
2016-01-13 10:55 ` Ingo Molnar
2016-01-15 6:06 ` Josh Poimboeuf
2016-01-15 10:41 ` Borislav Petkov
2016-01-15 11:00 ` Ingo Molnar
2016-01-15 11:11 ` Borislav Petkov
2016-01-15 11:13 ` Ingo Molnar [this message]
2016-01-20 5:42 ` Josh Poimboeuf
2016-01-20 5:50 ` H. Peter Anvin
2016-01-20 6:09 ` Josh Poimboeuf
2016-01-20 10:44 ` Borislav Petkov
2016-01-15 10:56 ` Ingo Molnar
2015-12-18 12:39 ` [PATCH v15 14/25] x86/xen: Add xen_cpuid() and xen_setup_gdt() to stacktool whitelists Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 15/25] x86/asm/crypto: Create stack frames in aesni-intel_asm.S Josh Poimboeuf
2016-01-12 16:53 ` Borislav Petkov
2016-01-12 16:54 ` Borislav Petkov
2015-12-18 12:39 ` [PATCH v15 16/25] x86/asm/crypto: Move .Lbswap_mask data to .rodata section Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 17/25] x86/asm/crypto: Move jump_table " Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 18/25] x86/asm/crypto: Create stack frames in clmul_ghash_mul/update() Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 19/25] x86/asm/entry: Create stack frames in thunk functions Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 20/25] x86/asm/acpi: Create a stack frame in do_suspend_lowlevel() Josh Poimboeuf
2015-12-20 16:13 ` Rafael J. Wysocki
2015-12-18 12:39 ` [PATCH v15 21/25] x86/asm: Create stack frames in rwsem functions Josh Poimboeuf
2016-01-12 12:41 ` Borislav Petkov
2016-01-12 14:36 ` Josh Poimboeuf
2016-01-12 14:40 ` Borislav Petkov
2015-12-18 12:39 ` [PATCH v15 22/25] x86/asm/efi: Create a stack frame in efi_call() Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 23/25] x86/asm/power: Create stack frames in hibernate_asm_64.S Josh Poimboeuf
2015-12-20 16:14 ` Rafael J. Wysocki
2015-12-18 12:39 ` [PATCH v15 24/25] x86/uaccess: Add stack frame output operand in get_user inline asm Josh Poimboeuf
2015-12-18 12:39 ` [PATCH v15 25/25] x86/stacktool: Ignore head_$(BITS) files Josh Poimboeuf
2016-01-12 14:58 ` [PATCH v15 00/25] Compile-time stack metadata validation Arnaldo Carvalho de Melo
2016-01-12 17:17 ` Borislav Petkov
2016-01-12 17:50 ` Josh Poimboeuf
2016-01-12 18:04 ` Borislav Petkov
2016-01-13 10:18 ` Ingo Molnar
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