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From: Thomas Gleixner <tglx@linutronix.de>
To: Borislav Petkov <bp@alien8.de>
Cc: "Lendacky, Thomas" <Thomas.Lendacky@amd.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	"x86@kernel.org" <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	"Rafael J . Wysocki" <rjw@rjwysocki.net>,
	Pavel Machek <pavel@ucw.cz>, Chen Yu <yu.c.chen@intel.com>,
	Jonathan Corbet <corbet@lwn.net>
Subject: Re: [PATCH] x86/CPU/AMD: Clear RDRAND CPUID bit on AMD family 15h/16h
Date: Thu, 15 Aug 2019 22:14:48 +0200 (CEST)
Message-ID: <alpine.DEB.2.21.1908152212120.1908@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20190815153447.GH15313@zn.tnic>

On Thu, 15 Aug 2019, Borislav Petkov wrote:
> On Thu, Aug 15, 2019 at 01:47:24PM +0000, Lendacky, Thomas wrote:
> > I think this is a clearer indication that the action has taken place.
> 
> Yeah, but what does that bring us? You wanna know this now, while
> testing. Once that whole effort is done, it is a useless printing of
> info which you have in cpuinfo already.

No. Print something useful in dmesg, telling the user that and also why
this has been disabled.

That avoids stupid questions and if they come up nevertheless we can reduce
the answer to LMGT4Y.

Thanks,

	tglx

  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-14 21:17 Lendacky, Thomas
2019-08-14 23:24 ` Non-random RDRAND " Pavel Machek
2019-08-14 23:38   ` Pavel Machek
2019-08-15 13:01   ` Lendacky, Thomas
2019-08-15 15:12   ` Theodore Y. Ts'o
2019-08-16  9:07     ` Pavel Machek
2019-08-16 14:42     ` Neil Horman
2019-08-15  7:21 ` Borislav Petkov
2019-08-15 13:47   ` Lendacky, Thomas
2019-08-15 15:34     ` Borislav Petkov
2019-08-15 20:14       ` Thomas Gleixner [this message]
2019-08-15 20:59 ` Andrew Cooper
2019-08-15 21:04   ` Thomas Gleixner
2019-08-15 21:05   ` Borislav Petkov
2019-08-15 21:25     ` Andrew Cooper
2019-08-17  8:44       ` Borislav Petkov
2019-08-17 11:43         ` Andrew Cooper
2019-08-18 16:32           ` Thomas Gleixner
2019-08-16 15:19 ` Andy Lutomirski

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