From: Thomas Gleixner <tglx@linutronix.de>
To: Borislav Petkov <bp@alien8.de>
Cc: "Raj, Ashok" <ashok.raj@intel.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Mihai Carabas <mihai.carabas@oracle.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Jon Grimm <Jon.Grimm@amd.com>,
kanth.ghatraju@oracle.com, konrad.wilk@oracle.com,
patrick.colp@oracle.com, Tom Lendacky <thomas.lendacky@amd.com>,
x86-ml <x86@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86/microcode: Add an option to reload microcode even if revision is unchanged
Date: Thu, 5 Sep 2019 12:51:18 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.21.1909051244250.1902@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20190905072029.GB19246@zn.tnic>
On Thu, 5 Sep 2019, Borislav Petkov wrote:
> On Wed, Sep 04, 2019 at 05:21:32PM -0700, Raj, Ashok wrote:
> > But echo 2 > reload would allow reading a microcode file from
> > /lib/firmware/intel-ucode/ even if the revision hasn't changed right?
> >
> > #echo 1 > reload wouldn't load if the revision on disk is same as what's loaded,
> > and we want to permit that with the echo 2 option.
>
> Then before we continue with this, please specify what the exact
> requirements are. Talk to your microcoders or whoever is going to use
> this and give the exact use cases which should be supported and describe
> them in detail.
Plus I have to ask whether this facility makes any sense outside of
microcode development. If so, then please explain the use case and give
a proper justification why this needs to be in the mainline kernel.
Thanks,
tglx
next prev parent reply other threads:[~2019-09-05 10:51 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 5:33 [PATCH] x86/microcode: Add an option to reload microcode even if revision is unchanged Ashok Raj
2019-08-29 5:38 ` Raj, Ashok
2019-08-29 6:09 ` Borislav Petkov
2019-08-29 13:02 ` Raj, Ashok
2019-09-03 16:46 ` Borislav Petkov
2019-09-04 22:06 ` Boris Ostrovsky
2019-09-04 22:12 ` Boris Petkov
2019-09-05 0:21 ` Raj, Ashok
2019-09-05 7:20 ` Borislav Petkov
2019-09-05 10:51 ` Thomas Gleixner [this message]
2019-09-05 19:40 ` Raj, Ashok
2019-09-05 19:49 ` Borislav Petkov
2019-09-05 20:20 ` Raj, Ashok
2019-09-05 21:22 ` Thomas Gleixner
2019-09-05 22:27 ` Raj, Ashok
2019-09-06 7:46 ` Borislav Petkov
2019-09-06 12:51 ` Thomas Gleixner
2019-09-06 14:40 ` Johannes Erdfelt
2019-09-06 15:16 ` Borislav Petkov
2019-09-06 15:46 ` Johannes Erdfelt
2019-09-06 16:17 ` Borislav Petkov
2019-09-06 16:43 ` Konrad Rzeszutek Wilk
2019-09-06 17:10 ` Borislav Petkov
2019-09-06 16:52 ` Johannes Erdfelt
2019-09-06 17:17 ` Borislav Petkov
2019-09-06 21:16 ` Thomas Gleixner
2019-09-07 0:33 ` Raj, Ashok
2019-09-07 10:37 ` Thomas Gleixner
2019-09-16 10:36 ` Thomas Gleixner
2019-09-17 0:31 ` Raj, Ashok
2019-09-17 6:37 ` Thomas Gleixner
2019-09-17 6:46 ` Borislav Petkov
2019-09-17 14:29 ` Raj, Ashok
2019-09-19 19:48 ` Mihai Carabas
2019-09-06 16:55 ` Raj, Ashok
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