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From: Peter Zijlstra <peterz@infradead.org>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: Borislav Petkov <bp@alien8.de>, X86 ML <x86@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 3/3] x86/microcode: Taint and warn on late loading
Date: Wed, 25 May 2022 08:59:40 +0200	[thread overview]
Message-ID: <20220525065940.GF2578@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <Yo2ASBAElqrQvzh3@agluck-desk3.sc.intel.com>

On Tue, May 24, 2022 at 06:03:04PM -0700, Luck, Tony wrote:
> On Tue, May 24, 2022 at 08:53:24PM +0200, Borislav Petkov wrote:
> > +	add_taint(TAINT_CPU_OUT_OF_SPEC, LOCKDEP_STILL_OK);
> 
> Seems harsh. Updating microcode to the latest is arguably the
> way to make sure that your CPU stays "IN_SPEC" (since the microcode
> may have a fix for a functional issue).

Then use early loading. There's too many fails associated with late
loading.

  reply	other threads:[~2022-05-25  7:00 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-24 18:53 [RFC PATCH 0/3] x86/microcode: Drop old interface and default-disable late loading Borislav Petkov
2022-05-24 18:53 ` [RFC PATCH 1/3] x86/microcode: Rip out the OLD_INTERFACE Borislav Petkov
2022-05-24 18:53 ` [RFC PATCH 2/3] x86/microcode: Default-disable late loading Borislav Petkov
2022-05-27 10:37   ` Ingo Molnar
2022-05-27 10:58     ` Borislav Petkov
2022-05-24 18:53 ` [RFC PATCH 3/3] x86/microcode: Taint and warn on " Borislav Petkov
2022-05-25  1:03   ` Luck, Tony
2022-05-25  6:59     ` Peter Zijlstra [this message]
2022-05-25  7:37       ` Borislav Petkov
2022-05-25 14:50         ` Luck, Tony
2022-05-25 15:28           ` Borislav Petkov
2022-05-25 15:40             ` Luck, Tony
2022-05-25 16:00               ` Borislav Petkov
2022-05-26 12:11                 ` Taint addresses Borislav Petkov
2022-05-26 16:41                   ` Luck, Tony
2022-05-27  9:45                     ` Borislav Petkov
2022-05-25 10:03   ` [RFC PATCH 3/3] x86/microcode: Taint and warn on late loading Peter Zijlstra
2022-05-25 12:52     ` [RFC PATCH -v2] " Borislav Petkov
2022-05-25 13:55 ` [PATCH 4/3] x86/microcode: Remove unnecessary perf callback default-disable " Borislav Petkov

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