Re: Linux and lots of memory: documentation?

Perry Harrington (pedward@sun4.apsoft.com)
Thu, 17 Dec 1998 10:58:10 -0800 (PST)

>
> Its being looked at but there are definite problems as to avoid a big
> performance hit it means a kernel that patches itself at boot time, and
> patching constant operations on a non risc cpu is grotesque.
>

I had an idea to help mitigate the impact that dynamicising PAGE_OFFSET would
cause. What about putting the page offset in the task structure? Isn't one
task structure almost always hot in the cache? What structures in the Linux
kernel are always hot? Also, another tack to take in combination to this,
is to reevaluate whether using PAGE_OFFSET is needed in some situations. Can
the same thing be accomplished without it? I'm gonna have a look around on
131 when I have some free time, and see about the second thing.

--Perry

-- 
Perry Harrington       Linux rules all OSes.    APSoft      ()
email: perry@apsoft.com 			Think Blue. /\


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