Setting Write through mode in linux-2.6.18.2 kernel ( MIPS 24KE)

Setting Write through mode in linux-2.6.18.2 kernel ( MIPS 24KE)

[sathesh babu]

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Hi,
    I am porting linux-2.6.18.2 kernel on MIPS 24KE processor.
  I would like to configure  write through cache mode.
   
  I checked the cache defines ( asm-mips/pgtable-bits.h) .
   
  Only write back mode is defined for MIPS32.
   
  Does the linux-2.6.18.2 kernel ( on MIPS 24KE) have support for write through mode?.
  Could you please tell me write through mode is there in linux-2.6.18.2 kernel for MIPS 24KE.
   
   
  Thanks in advance.
   
  Regards,
  Sathesh
   
   

 				
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Re: Setting Write through mode in linux-2.6.18.2 kernel ( MIPS 24KE)

[Ralf Baechle]

On Thu, Jan 18, 2007 at 02:33:31AM +0000, sathesh babu wrote:

>     I am porting linux-2.6.18.2 kernel on MIPS 24KE processor.

Strange, I though we already did that years ago ...

>   I would like to configure  write through cache mode.
>    
>   I checked the cache defines ( asm-mips/pgtable-bits.h) .
>    
>   Only write back mode is defined for MIPS32.
>    
>   Does the linux-2.6.18.2 kernel ( on MIPS 24KE) have support for write through mode?.
>   Could you please tell me write through mode is there in linux-2.6.18.2 kernel for MIPS 24KE.

Just set CONF_CM_DEFAULT to the cache mode of choice.

But why would you want to use a slower cache mode anyway ...

  Ralf