linux-kernel - Re: [PATCH 2/2] Suppress false "mtrr all empty" warning message when running as VMware guest

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Message-ID: <20080925141828.GB15948@yantp.cn.ibm.com>
Date:	Thu, 25 Sep 2008 22:18:28 +0800
From:	Yan Li <elliot.li.tech@...il.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Yan Li <elliot.li.tech@...il.com>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	joerg.roedel@....com, rjmaomao@...il.com,
	Thomas Gleixner <tglx@...utronix.de>, nancydreaming@...il.com
Subject: Re: [PATCH 2/2] Suppress false "mtrr all empty" warning message
	when running as VMware guest

On Wed, Sep 24, 2008 at 09:39:20AM -0700, Yinghai Lu wrote:
> On Wed, Sep 24, 2008 at 5:24 AM, Yan Li <elliot.li.tech@...il.com> wrote:
> > Since the mtrr empty was detected very early before we can use DMI or
> > PCI to check whether we are running as a VMware guest or not, we now
> > only print an info there. Warning will only be issued later when we
> > are sure that we are not running as a VMware guest.
> >
> > mtrr_trim_uncached_memory() is modified to return meaningful codes for
> > later warning decision.
> 
> we have moved dmi_scan_machine() much early...
> 
> so please check with latest tip/master to use
> dmi_check_system with that.

I checked your patch 1c6e5503 that moved dmi_scan_machine() earlier,
but it's still behind mtrr_trim_uncached_memory(), so we still can't
use DMI to check for VMware there.

-- 
Li, Yan
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