Re: Need for SHIFT and MASK

From: Denis Vlasenko
Date: Mon Oct 10 2005 - 09:38:54 EST

On Sunday 09 October 2005 21:40, Vivek Kutal wrote:
> Hi Ingo,
> > This is usally table driven and someone has to set up
> > this "Page Translation Tables". That's a job of the Linux kernel.
> Yes setting up the page table entries is the job of the kernel , but
> for that we need to put the physical add. of the page and some bits
> (present,access writes etc) in the entry, once it is done the main job
> of translation which requires the masking and shifting is done by the
> processor whenever that page is referenced .
> so why these macros are present in the kernel?

They are needed. You can remome them.

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