From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
To: Borislav Petkov <bp@amd64.org>
Cc: Ingo Molnar <mingo@elte.hu>, Fenghua Yu <fenghua.yu@intel.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Thomas Gleixner <tglx@linutronix.de>,
H Peter Anvin <hpa@zytor.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Tony Luck <tony.luck@intel.com>,
Arjan van de Ven <arjan.van.de.ven@intel.com>,
Suresh B Siddha <suresh.b.siddha@intel.com>,
Len Brown <len.brown@intel.com>,
Randy Dunlap <rdunlap@xenotime.net>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-pm <linux-pm@vger.kernel.org>, x86 <x86@kernel.org>,
Tejun Heo <tj@kernel.org>,
"Herrmann3, Andreas" <Andreas.Herrmann3@amd.com>
Subject: Re: [PATCH v4 0/7] x86: BSP or CPU0 online/offline
Date: Tue, 06 Dec 2011 19:49:25 +0530 [thread overview]
Message-ID: <4EDE246D.5000500@linux.vnet.ibm.com> (raw)
In-Reply-To: <20111206141543.GA19241@aftab>
On 12/06/2011 07:45 PM, Borislav Petkov wrote:
> On Tue, Dec 06, 2011 at 07:34:37PM +0530, Srivatsa S. Bhat wrote:
>>> Not blindly, the microcode is still verified.
>>>
>> I saw your other mail about the validity of this whole scenario, and I
>> kind of agree to your point.
>>
>> My thoughts below might not be so relevant/significant considering that,
>> but anyways, just to understand what you said above:
>> I didn't quite find where the microcode is verified if the kernel happens
>> to have the microcode image already.
>
> Sorry, I might not've been clear enough: it is still verified by the
> _hardware_, regardless of whether the ucode loader checks it or not.
> Remember, hw guys don't trust sw guys and the reverse holds true too.
>
> :-)
>
Oh.. Ok :-) And thank you for the explanation!
Regards,
Srivatsa S. Bhat
next prev parent reply other threads:[~2011-12-06 14:19 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-12 5:26 Fenghua Yu
2011-11-12 5:26 ` [PATCH v4 1/7] x86/topology.c: Support functions for BSP online/offline Fenghua Yu
2011-11-12 5:26 ` [PATCH v4 2/7] x86/common.c: Init BSP data during BSP online Fenghua Yu
2011-11-12 5:26 ` [PATCH v4 3/7] x86/mtrr/main.c: Ask the first online CPU to save mtrr Fenghua Yu
2011-11-12 5:26 ` [PATCH v4 4/7] x86/smpboot.c: Don't offline BSP if any irq can not be migrated out of it Fenghua Yu
2011-11-12 5:26 ` [PATCH v4 5/7] Documentations/cpu-hotplug.tx, kernel-parameters.txt: Add x86 CPU0 online/offline feature Fenghua Yu
2011-11-12 5:26 ` [PATCH v4 6/7] x86/i387.c: Thread xstate is initialized only on BSP once Fenghua Yu
2011-11-13 15:17 ` Brian Gerst
2011-11-12 5:26 ` [PATCH v4 7/7] x86/power/cpu.c: Don't hibernate/suspend if CPU0 is offline Fenghua Yu
2011-12-06 8:42 ` [PATCH v4 0/7] x86: BSP or CPU0 online/offline Ingo Molnar
2011-12-06 8:58 ` Ingo Molnar
2011-12-06 9:52 ` Srivatsa S. Bhat
2011-12-06 10:35 ` Ingo Molnar
2011-12-06 10:47 ` Srivatsa S. Bhat
2011-12-06 11:25 ` Srivatsa S. Bhat
2011-12-06 13:03 ` Borislav Petkov
2011-12-06 13:52 ` Ingo Molnar
2011-12-07 0:04 ` Yu, Fenghua
2011-12-07 0:15 ` Yu, Fenghua
2011-12-07 7:40 ` Ingo Molnar
2011-12-07 17:08 ` Luck, Tony
2011-12-07 22:21 ` Ingo Molnar
2011-12-08 0:53 ` Luck, Tony
2011-12-08 4:43 ` Ingo Molnar
2011-12-06 13:00 ` Borislav Petkov
2011-12-06 14:04 ` Srivatsa S. Bhat
2011-12-06 14:15 ` Borislav Petkov
2011-12-06 14:19 ` Srivatsa S. Bhat [this message]
2011-12-06 14:58 ` Van De Ven, Arjan
2011-12-06 14:15 ` Srivatsa S. Bhat
2011-12-09 0:41 ` Yu, Fenghua
2011-12-09 7:28 ` Ingo Molnar
2011-12-15 18:38 ` Yu, Fenghua
2011-12-15 18:57 ` Ingo Molnar
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