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SubjectRe: [PATCH] NOMMU: use copy_*_user_page() in access_process_vm()
On 12/02/2009 10:45 PM, David Howells wrote:
> Mike Frysinger<vapier@gentoo.org> 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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