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From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Borislav Petkov <bp@alien8.de>
Cc: x86@kernel.org, Masami Hiramatsu <masami.hiramatsu@gmail.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Alexei Starovoitov <ast@kernel.org>,
	bpf@vger.kernel.org, Steven Rostedt <rostedt@goodmis.org>,
	Nikolay Borisov <nborisov@suse.com>
Subject: Re: [PATCH] x86: Disable CET instrumentation in the kernel
Date: Fri, 29 Jan 2021 10:49:32 -0600	[thread overview]
Message-ID: <20210129164932.qt7hhmb7x4ehomfr@treble> (raw)
In-Reply-To: <20210129163048.GD27841@zn.tnic>

On Fri, Jan 29, 2021 at 05:30:48PM +0100, Borislav Petkov wrote:
> On Fri, Jan 29, 2021 at 09:10:34AM -0600, Josh Poimboeuf wrote:
> > Maybe eventually.  But the enablement (actually enabling CET/CFI/etc)
> > happens in the arch code anyway, right?  So it could be a per-arch
> > decision.
> 
> Right.
> 
> Ok, for this one, what about
> 
> Cc: <stable@vger.kernel.org>
> 
> ?
> 
> What are "some configurations of GCC"? If it can be reproduced with
> what's released out there, maybe that should go in now, even for 5.11?
> 
> Hmm?

Agreed, stable is a good idea.   I think Nikolay saw it with GCC 9.

-- 
Josh


  reply	other threads:[~2021-01-29 16:52 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-27 13:43 kprobes broken since 0d00449c7a28 ("x86: Replace ist_enter() with nmi_enter()") Nikolay Borisov
2021-01-27 15:13 ` Masami Hiramatsu
2021-01-27 15:24   ` Masami Hiramatsu
2021-01-27 17:57     ` Nikolay Borisov
2021-01-28  1:34       ` Masami Hiramatsu
2021-01-28  3:38         ` Masami Hiramatsu
2021-01-28  7:11           ` Nikolay Borisov
2021-01-28 16:12           ` Nikolay Borisov
2021-01-28 16:45             ` Nikolay Borisov
2021-01-28 16:50               ` Josh Poimboeuf
2021-01-28 21:52                 ` [PATCH] x86: Disable CET instrumentation in the kernel Josh Poimboeuf
2021-01-29  6:23                   ` Nikolay Borisov
2021-01-29 10:21                   ` Borislav Petkov
     [not found]                     ` <20210129151034.iba4eaa2fuxsipqa@treble>
2021-01-29 16:30                       ` Borislav Petkov
2021-01-29 16:49                         ` Josh Poimboeuf [this message]
2021-01-29 16:54                           ` Nikolay Borisov
2021-01-29 17:03                             ` Josh Poimboeuf
2021-01-29 17:07                               ` Borislav Petkov
2021-01-29 17:58                                 ` Seth Forshee
2021-01-29 18:06                   ` [tip: x86/urgent] x86/build: " tip-bot2 for Josh Poimboeuf
2021-01-28 18:24               ` kprobes broken since 0d00449c7a28 ("x86: Replace ist_enter() with nmi_enter()") Peter Zijlstra
2021-01-29  1:34                 ` Alexei Starovoitov
2021-01-29  6:36                   ` Nikolay Borisov
     [not found]                   ` <YBPNyRyrkzw2echi@hirez.programming.kicks-ass.net>
     [not found]                     ` <20210129224011.81bcdb3eba1227c414e69e1f@kernel.org>
     [not found]                       ` <20210129105952.74dc8464@gandalf.local.home>
2021-01-29 16:24                         ` Peter Zijlstra
2021-01-29 17:45                           ` Alexei Starovoitov
2021-01-29 17:59                             ` Peter Zijlstra
2021-01-29 19:01                               ` Steven Rostedt
2021-01-29 21:05                                 ` Alexei Starovoitov
2021-01-30  1:41                                   ` Masami Hiramatsu
2021-01-29 21:24                                 ` Steven Rostedt
2021-01-30  8:28                                   ` Peter Zijlstra
2021-01-30 12:44                                     ` Steven Rostedt
2021-02-02 10:45                                       ` Peter Zijlstra
2021-02-02 14:52                                         ` Steven Rostedt
2021-02-02 16:45                                           ` Peter Zijlstra
2021-02-02 16:56                                             ` Steven Rostedt
2021-02-02 18:30                                               ` Peter Zijlstra
2021-02-02 21:05                                                 ` Steven Rostedt
2021-02-03 13:33                                                   ` Masami Hiramatsu
2021-02-03 13:52                                                     ` Steven Rostedt
2021-01-30  2:02                               ` Masami Hiramatsu
2021-01-30  3:08                                 ` Alexei Starovoitov
2021-01-30 12:10                                   ` Masami Hiramatsu
2021-01-27 16:44   ` Peter Zijlstra

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