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Date: Tue, 06 Dec 2011 19:49:25 +0530 From: "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com> To: Borislav Petkov <bp@...64.org> CC: Ingo Molnar <mingo@...e.hu>, Fenghua Yu <fenghua.yu@...el.com>, "Rafael J. Wysocki" <rjw@...k.pl>, Thomas Gleixner <tglx@...utronix.de>, H Peter Anvin <hpa@...or.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Tony Luck <tony.luck@...el.com>, Arjan van de Ven <arjan.van.de.ven@...el.com>, Suresh B Siddha <suresh.b.siddha@...el.com>, Len Brown <len.brown@...el.com>, Randy Dunlap <rdunlap@...otime.net>, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, Peter Zijlstra <peterz@...radead.org>, linux-kernel <linux-kernel@...r.kernel.org>, linux-pm <linux-pm@...r.kernel.org>, x86 <x86@...nel.org>, Tejun Heo <tj@...nel.org>, "Herrmann3, Andreas" <Andreas.Herrmann3@....com> Subject: Re: [PATCH v4 0/7] x86: BSP or CPU0 online/offline 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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