linux-kernel - Re: flush_kernel_vmap_range() invalidate_kernel_vmap

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Date:	Fri, 25 Mar 2011 18:27:09 +0100
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	naveen yadav <yad.naveen@...il.com>
Cc:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@....de>
Subject: Re: flush_kernel_vmap_range() invalidate_kernel_vmap_range() API not
 exists for MIPS

On Fri, Mar 25, 2011 at 02:38:13PM +0530, naveen yadav wrote:

> We are working on 2.6.35.9 linux kernel on MIPS 34kce core and our
> cache is VIVT having cache aliasing .

No, they're VIPT unless you successfully modified your 34K core to
change it from a less than perfect cache design to the most lunatic
cache policy known to man kind ...

> When I check the implementation on ARM I can check the implemenation
> exists , but there is not similar implementation exists on MIPS.
> These API's are used by XFS module:
> 
> static inline void flush_kernel_vmap_range(void *vaddr, int size)
> static inline void invalidate_kernel_vmap_range(void *vaddr, int size)
> static inline void flush_kernel_dcache_page(struct page *page)

A known problem for (too ...) long.  I'll finally take care of it.

  Ralf
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