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Re: who pages the pager?
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From: |
Neal H. Walfield |
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Subject: |
Re: who pages the pager? |
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Date: |
Tue, 18 Oct 2005 16:43:07 +0100 |
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User-agent: |
Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.6 (Marutamachi) APEL/10.6 Emacs/21.4 (i386-pc-linux-gnu) MULE/5.0 (SAKAKI) |
At Tue, 18 Oct 2005 17:32:46 +0200,
Simon Nieuviarts wrote:
> And what if the pager does not answer ?
Then you shouldn't have trusted the pager to begin with. In this
case, the pager is necessarily part of the task's TCB.
> I think the pager can only give hints
> to an external paging task that takes the real decisions. The pager can not
> be considered as reliable.
I don't understand these claims. What kind of hints is the pager
going to give? As far as I can see, there are no hints to give, only
instructions. For instance: "if I fault at this address, map this
frame". If the pager's pager maps a different frame then the task is
now broken.
Thanks,
Neal