Messages in this thread | | | Date | Tue, 29 Apr 2008 13:46:17 -0700 | From | Randy Dunlap <> | Subject | Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous to discrete layout v8 |
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On Tue, 29 Apr 2008 03:52:33 -0700 Yinghai Lu wrote:
> Index: linux-2.6/Documentation/kernel-parameters.txt > =================================================================== > --- linux-2.6.orig/Documentation/kernel-parameters.txt > +++ linux-2.6/Documentation/kernel-parameters.txt > @@ -595,6 +595,20 @@ and is between 256 and 4096 characters. > See drivers/char/README.epca and > Documentation/digiepca.txt. > > + disable_mtrr_cleanup [X86] > + enable_mtrr_cleanup [X86] > + The kernel tries to adjust MTRR layout from continuous > + to discrete, to make X server driver able to add WB > + entry later. This parameter enables/disables that. > + > + mtrr_chunk_size=nn[KMG] [X86] > + used for mtrr cleanup. It is largest continous chunk > + that could hold holes aka. UC entries. > + > + mtrr_gran_size=nn[KMG] [X86] > + used for mtrr cleanup. It is granity of mtrr block.
s/granity/granularity/ I think that's what you mean/want.
How does someone know that size/granity/whatever of an mtrr block?
> + Big value could prevent small alignment use up MTRRs. > + > disable_mtrr_trim [X86, Intel and AMD only] > By default the kernel will trim any uncacheable > memory out of your available memory pool based on
--- ~Randy
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