Messages in this thread | | | Date | Fri, 3 Oct 2008 01:00:00 +0200 | From | "J.A. Magallón" <> | Subject | Re: [PATCH 2/2] x86: mtrr_cleanup try gran_size to less than 1M |
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On Thu, 2 Oct 2008 15:52:11 -0700, "Yinghai Lu" <yinghai@kernel.org> wrote:
> On Thu, Oct 2, 2008 at 3:33 PM, Yinghai Lu <yinghai@kernel.org> wrote: > > On Thu, Oct 2, 2008 at 3:03 PM, J.A. Magallón <jamagallon@ono.com> wrote: > >> On Mon, 29 Sep 2008 18:54:12 -0700, Yinghai Lu <yhlu.kernel@gmail.com> wrote: > >> > >>> > >>> so start from 64k instead of 1M > >>> > >> > >> Or there is something I don't catch about mtrrs, or it still does silly > >> things. > >> > >> I have an ASUS PCDL, dual xeon, 2Gb of memory. Mtrrs after cleanup are: > >> > >> werewolf:/proc> cat mtrr > >> reg00: base=0x00000000 ( 0MB), size=1024MB: write-back, count=1 > >> reg01: base=0x40000000 (1024MB), size= 512MB: write-back, count=1 > >> reg02: base=0x60000000 (1536MB), size= 256MB: write-back, count=1 > >> reg03: base=0x70000000 (1792MB), size= 128MB: write-back, count=1 > >> reg04: base=0x78000000 (1920MB), size= 64MB: write-back, count=1 > >> reg05: base=0x7c000000 (1984MB), size= 64MB: write-back, count=1 > >> reg06: base=0x7ff00000 (2047MB), size= 1MB: uncachable, count=1 > >> > >> So it adds a last WB zone, but substracts the last 1Mb. (Why do > >> I have that stupid uncacheable mb ? probably a bios issue...) > >> But those two 64 mb zones could be add to a 128Mb, that new one > >> with previous to 256Mb and so on, giving something like: > >> > >> reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1 > >> reg01: base=0x7ff00000 (2047MB), size= 1MB: uncachable, count=1 > >> > >> Is this incorrect ? > >> > > > > can you boot with mtrr_cleanup_debug? > > > > also what is /proc/mtrr with disable_mtrr_cleanup? > > are you on latest tip/master? >
No, I use rc8-git3 with your patches (the small gran_size series and the parameter rename, except the debug one) manually applied.
-- J.A. Magallon <jamagallon()ono!com> \ Software is like sex: \ It's better when it's free Mandriva Linux release 2009.0 (Cooker) for i586 Linux 2.6.25-jam18 (gcc 4.3.1 20080626 (GCC) #1 SMP -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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