Re: [PATCH] NOMMU: use copy_*_user_page() in access_process_vm()

[Jie Zhang]

On 12/02/2009 10:45 PM, David Howells wrote:
> Mike Frysinger<vapier@xxxxxxxxxx>  wrote:
>
> > The mmu code uses the copy_*_user_page() variants in access_process_vm()
> > rather than copy_*_user() as the former includes an icache flush.  This is
> > important when doing things like setting software breakpoints with gdb.
> > So switch the nommu code over to do the same.
>
> Note that we may only really want to do an icache flush if the target region
> is mapped executable somewhere.  On the other hand, for debugging stuff on an
> embedded board, it probably doesn't matter.
It is not checked before icache flush even for MMU. This is a place we 
can do some improvement. But it's not important for debugging.


Jie
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