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From: Zhenzhong Duan <zhenzhong.duan@oracle.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Linux-Kernel <linux-kernel@vger.kernel.org>,
	mingo@redhat.com, tglx@linutronix.de,
	Srinivas REDDY Eeda <srinivas.eeda@oracle.com>,
	hpa@zytor.com
Subject: Re: [PATCH] x86/microcode/intel: Ensure new microcode processor flags match with cpu's pf
Date: Tue, 19 Jun 2018 17:24:20 +0800	[thread overview]
Message-ID: <a9c21f46-af2c-28aa-b539-a8b6a6fc666b@oracle.com> (raw)
In-Reply-To: <20180619091205.GA30870@zn.tnic>

On 2018/6/19 17:12, Borislav Petkov wrote:
> On Tue, Jun 19, 2018 at 12:49:40PM +0800, Zhenzhong Duan wrote:
>> Imagine kernel already found a microcode blob A with extended sig/pf
>> matching current cpu, then another microcode B is checked which doesn't
>> match current cpu...
> Do you see the
> 
> 	if (!microcode_matches(mc_header, uci->cpu_sig.sig)) {
> 
> call a couple of lines earlier?
Sure, but it didn't ensure a match in stepping and pf, is that expected?

Thanks
Zhenzhong

  reply	other threads:[~2018-06-19  9:24 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-04  8:16 Zhenzhong Duan
2018-06-18 19:56 ` Borislav Petkov
2018-06-19  4:49   ` Zhenzhong Duan
2018-06-19  9:12     ` Borislav Petkov
2018-06-19  9:24       ` Zhenzhong Duan [this message]
2018-06-19  9:35         ` Borislav Petkov

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