From: "Pali Rohár" <pali.rohar@gmail.com>
To: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Austin S Hemmelgarn <ahferroin7@gmail.com>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Matt Fleming <matt.fleming@intel.com>,
Borislav Petkov <bp@alien8.de>, Mark Salter <msalter@redhat.com>,
Alessandro Zummo <a.zummo@towertech.it>,
rtc-linux@googlegroups.com, linux-efi@vger.kernel.org,
linux-kernel@vger.kernel.org, Dave Young <dyoung@redhat.com>
Subject: Re: [PATCH] rtc: Disable EFI rtc for x86
Date: Tue, 11 Nov 2014 12:53:09 +0100 [thread overview]
Message-ID: <201411111253.10519@pali> (raw)
In-Reply-To: <20141111113831.1119720e@alan.etchedpixels.co.uk>
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On Tuesday 11 November 2014 12:38:31 One Thousand Gnomes wrote:
> > > look further into the options I have set in my kernel
> > > build, I may have changed something else without
> > > remembering between booting with and without the CSM
> > > enabled.
> >
> > It could also be that the non-CSM BIOS somehow remaps the
> > CMOS registers.
>
> I don't believe there is anything which prevents the CSM from
> faking a CMOS clock using SMM from whatever is actually in
> the hardware.
>
> Alan
Also in case when we do not know what SMM code is doing...
--
Pali Rohár
pali.rohar@gmail.com
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next prev parent reply other threads:[~2014-11-11 11:53 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-03 12:32 [PATCH] rtc: Disable EFI rtc for x86 Matt Fleming
[not found] ` <1412339576-17972-1-git-send-email-matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2014-10-03 15:01 ` Mark Salter
[not found] ` <1412348517.5410.13.camel-PDpCo7skNiwAicBL8TP8PQ@public.gmane.org>
2014-11-09 17:37 ` Pali Rohár
2014-11-09 18:22 ` Borislav Petkov
[not found] ` <20141109182231.GA29337-fF5Pk5pvG8Y@public.gmane.org>
2014-11-10 11:22 ` Matt Fleming
[not found] ` <1415618533.14686.239.camel-ZqTwcBeJ+wsBof6jY8KHXm7IUlhRatedral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2014-11-10 16:23 ` Pali Rohár
2014-11-10 16:45 ` Austin S Hemmelgarn
[not found] ` <5460EB92.1090501-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-11-10 17:04 ` Matthew Garrett
2014-11-10 20:37 ` Austin S Hemmelgarn
[not found] ` <5461220E.20605-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-11-10 20:58 ` H. Peter Anvin
[not found] ` <546126FF.3070600-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2014-11-10 21:26 ` Matthew Garrett
2014-11-11 11:38 ` One Thousand Gnomes
2014-11-11 11:46 ` Borislav Petkov
2014-11-11 11:53 ` Pali Rohár [this message]
2014-11-11 12:14 ` Austin S Hemmelgarn
2014-11-14 11:21 ` Pali Rohár
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