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From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
To: Borislav Petkov <bp@alien8.de>
Cc: "X86 ML" <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
	"Marcus Rückert" <mrueckert@suse.com>
Subject: Re: [PATCH] x86/umip: Add a umip= cmdline switch
Date: Mon, 13 Sep 2021 14:38:36 -0700	[thread overview]
Message-ID: <20210913213836.GA10627@ranerica-svr.sc.intel.com> (raw)
In-Reply-To: <YTx0+0pfyzHuX80L@zn.tnic>

On Sat, Sep 11, 2021 at 11:20:59AM +0200, Borislav Petkov wrote:
> On Fri, Sep 10, 2021 at 06:14:59PM -0700, Ricardo Neri wrote:
> > If it is printing the same information again and again, wouldn't it be
> > simpler to have a umip_pr_warn_once()?
> 
> If you do a once thing, you're blocking any other programs from warning,
> output you probably wanna see.

That is right. Although, I am not sure programs you can have in
the same machine that also want to use UMIP-protected instructions.
> 
> With the command line switch you do the same but you're at least pushing
> the user to become active and do it first. I.e., with enabling that
> option, the user basically says that she/he is not interested in any of
> that output and that is ok.
> 
> The optimal thing would be to ratelimit it per process but that would be
> an overkill and not really needed.

Indeed.

Thanks and BR,
Ricardo

  reply	other threads:[~2021-09-13 21:39 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-07 20:04 Borislav Petkov
2021-09-11  1:14 ` Ricardo Neri
2021-09-11  9:20   ` Borislav Petkov
2021-09-13 21:38     ` Ricardo Neri [this message]
2021-09-14 16:51       ` Borislav Petkov
2021-09-15 11:34         ` Ricardo Neri
2021-09-15 12:21           ` Marcus Rückert
2021-09-15 13:00             ` Ricardo Neri
2021-09-15 13:14               ` Borislav Petkov
2021-09-15 14:46           ` [PATCH] x86/umip: Downgrade warning messages to debug loglevel Borislav Petkov
2021-09-16  0:27             ` Ricardo Neri
2021-09-23 14:59               ` Borislav Petkov
2021-09-13 21:45 ` [PATCH] x86/umip: Add a umip= cmdline switch Ricardo Neri
2021-09-14 16:52   ` Borislav Petkov
2021-09-23 15:03 ` [tip: x86/cpu] x86/umip: Downgrade warning messages to debug loglevel tip-bot2 for Borislav Petkov
2021-09-25 11:31 ` tip-bot2 for Borislav Petkov

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