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    SubjectRe: [PATCH 1/3] x86: mtrr_cleanup update command line
    On Wed, 8 Oct 2008 18:28:39 -0700 Yinghai Lu wrote:

    > On Wed, Oct 8, 2008 at 5:07 PM, Randy Dunlap <rdunlap@xenotime.net> wrote:
    > > On Tue, 30 Sep 2008 16:57:39 -0700 Randy Dunlap wrote:
    > >
    > > BTW, this comment is alread in Documentation/kernel-parameters.txt, at the top of the file:
    >
    > oh...
    >
    > >
    > > The following is a consolidated list of the kernel parameters as implemented
    > > (mostly) by the __setup() macro and sorted into English Dictionary order
    > > (defined as ignoring all punctuation and sorting digits before letters in a
    > > case insensitive manner), and with descriptions where known.
    > >
    > >
    > how about
    >
    > like to filter out disable, enable, no, etc...

    I don't think that mtrr gets any special treatment here.
    All "acpi" parameters are not grouped together (unless they begin with
    "acpi"). All "apic" parameters are not grouped together.
    All "*iommu*" parameters are not grouped together....


    > diff --git a/Documentation/kernel-parameters.txt
    > b/Documentation/kernel-parameters.txt
    > index 4b9ee9b..782e2b0 100644
    > --- a/Documentation/kernel-parameters.txt
    > +++ b/Documentation/kernel-parameters.txt
    > @@ -620,35 +620,6 @@ and is between 256 and 4096 characters. It is
    > defined in the file
    > 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 granularity of mtrr block.
    > - Default is 1.
    > - Large value could prevent small alignment from
    > - using up MTRRs.
    > -
    > - mtrr_spare_reg_nr=n [X86]
    > - Format: <integer>
    > - Range: 0,7 : spare reg number
    > - Default : 1
    > - Used for mtrr cleanup. It is spare mtrr entries number.
    > - Set to 2 or more if your graphical card needs more.
    > -
    > - 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
    > - MTRR settings. This parameter disables that behavior,
    > - possibly causing your machine to run very slowly.
    > -
    > dmasound= [HW,OSS] Sound subsystem buffers
    >
    > dscc4.setup= [NET]
    > @@ -1310,6 +1281,35 @@ and is between 256 and 4096 characters. It is
    > defined in the file
    > [HW] Make the MicroTouch USB driver use raw coordinates
    > ('y', default) or cooked coordinates ('n')
    >
    > + 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 granularity of mtrr block.
    > + Default is 1.
    > + Large value could prevent small alignment from
    > + using up MTRRs.
    > +
    > + mtrr_spare_reg_nr=n [X86]
    > + Format: <integer>
    > + Range: 0,7 : spare reg number
    > + Default : 1
    > + Used for mtrr cleanup. It is spare mtrr entries number.
    > + Set to 2 or more if your graphical card needs more.
    > +
    > + 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
    > + MTRR settings. This parameter disables that behavior,
    > + possibly causing your machine to run very slowly.
    > +
    > n2= [NET] SDL Inc. RISCom/N2 synchronous serial card
    >
    > NCR_D700= [HW,SCSI]
    >


    ---
    ~Randy


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