From: Greg KH <gregkh@linuxfoundation.org>
To: Rolf Neugebauer <rolf.neugebauer@docker.com>
Cc: Borislav Petkov <bp@alien8.de>,
Jia Zhang <zhang.jia@linux.alibaba.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tony Luck <tony.luck@intel.com>, Ingo Molnar <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: x86/microcode/intel: Division by zero panic in 4.9.79 and 4.4.114
Date: Thu, 8 Feb 2018 17:39:40 +0100 [thread overview]
Message-ID: <20180208163940.GD9421@kroah.com> (raw)
In-Reply-To: <CA+pO-2c1WPr7UTtqMQBCzOzKr5ex=mu4URm=d=Of1+bn-jHJUA@mail.gmail.com>
On Thu, Feb 08, 2018 at 04:25:58PM +0000, Rolf Neugebauer wrote:
> On Thu, Feb 8, 2018 at 2:53 PM, Borislav Petkov <bp@alien8.de> wrote:
> > On Thu, Feb 08, 2018 at 01:55:48PM +0000, Rolf Neugebauer wrote:
> >> On the 4.4 kernel, 1f161f67a272c ("x86/microcode: Do the family check
> >> first") does not apply cleanly. Looks like it relies on 309aac77768c0
> >> ("x86/microcode: Decrease CPUID use") and 7a93a40be23e5
> >> ("x86/microcode: Remove local vendor variable") as well. These don't
> >> apply cleanly either.
> >
> > It figures. The backporting game is hm, well, a fun one. :-)
> >
> >> Should I just manually backport the functionality of 1f161f67a272c?
> >
> > Yeah, try that first.
>
> Here it is below (same disclaimer about crappy mail client). If Boris
> is fine with the changes, Greg, I can send it properly with "git
> send-email" if needed.
Can you also send this for 4.9? It should need it as well. And at
first glance, it looks good to me.
thanks for doing this,
greg k-h
next prev parent reply other threads:[~2018-02-08 16:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-06 14:09 x86/microcode/intel: Division by zero panic in 4.9.79 and 4.4.114 Rolf Neugebauer
2018-02-06 14:24 ` Borislav Petkov
2018-02-07 14:34 ` Greg KH
2018-02-07 16:31 ` Rolf Neugebauer
2018-02-07 18:12 ` Borislav Petkov
2018-02-08 13:55 ` Rolf Neugebauer
2018-02-08 14:53 ` Borislav Petkov
2018-02-08 16:25 ` Rolf Neugebauer
2018-02-08 16:39 ` Greg KH [this message]
2018-02-08 17:12 ` [PATCH 1/2] x86/microcode/AMD: Do not load when running on a hypervisor Rolf Neugebauer
2018-02-08 17:12 ` [PATCH 2/2] x86/microcode: Do the family check first Rolf Neugebauer
2018-02-08 17:25 ` Greg KH
2018-02-08 18:26 ` x86/microcode/intel: Division by zero panic in 4.9.79 and 4.4.114 Borislav Petkov
2018-02-08 16:39 ` Greg KH
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