From: Meelis Roos <mroos@linux.ee>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: strange MTRR on 2.6.29-git
Date: Sun, 5 Apr 2009 10:12:00 +0300 (EEST) [thread overview]
Message-ID: <Pine.SOC.4.64.0904050953480.2958@math.ut.ee> (raw)
In-Reply-To: <86802c440904011143i65d99bd8x7a296f616f6bfccc@mail.gmail.com>
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> > reg00: base=0x000000000 ( 0MB), size= 512MB, count=1: write-back
> > reg01: base=0x020000000 ( 512MB), size= 1MB, count=1: write-back
> > reg02: base=0x020000000 ( 512MB), size= 1MB, count=1: uncachable
> > reg03: base=0x0f2000000 ( 3872MB), size= 32MB, count=2: write-combining
> > reg04: base=0x0f8000000 ( 3968MB), size= 64MB, count=1: write-combining
> that is original setting by BIOS.
> it should be ok.
> if you like, could try to enable
>
> CONFIG_MTRR=y
> CONFIG_MTRR_SANITIZER=y
> CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
> CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
>
> it could do the clean up for you.
Thank you, it did clean it up:
reg00: base=0x000000000 ( 0MB), size= 512MB, count=1: write-back
reg01: base=0x0f2000000 ( 3872MB), size= 32MB, count=2: write-combining
reg02: base=0x0f8000000 ( 3968MB), size= 64MB, count=1: write-combining
and it removed the overlapping MTRR-s altogether since there was no RAM
described t be here. Seems to work fine.
--
Meelis Roos (mroos@linux.ee)
next prev parent reply other threads:[~2009-04-05 7:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-01 14:13 Meelis Roos
2009-04-01 14:25 ` Meelis Roos
2009-04-01 18:43 ` Yinghai Lu
2009-04-05 7:12 ` Meelis Roos [this message]
2009-04-05 13:41 ` Ingo Molnar
2009-04-05 20:05 ` H. Peter Anvin
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