Date: Tue, 3 Feb 2004 11:57:49 -0800 (PST) From: Julian Elischer <julian@elischer.org> To: Sridhar Chellappa <schellap@spinnakernet.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Kernel Virtual Address Space Message-ID: <Pine.BSF.4.21.0402031156520.88161-100000@InterJet.elischer.org> In-Reply-To: <401FD206.9080101@spinnakernet.com>
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On Tue, 3 Feb 2004, Sridhar Chellappa wrote: > Sridhar Chellappa wrote: > > > As part of the Bootup sequence, I see create_pagetables allocate only > > 30 Pages for Page Table entries in non-PAE mode and 120 pages in PAE > > mode. Does this mean that all the kernel mode entities get only 4 * 30 > > * 1024 * 1024 = 120 MB worth of Address Space ? Can I tune the kernel > > virtual address space by just changing the "NKPT" define in pmap.h ? > > > > Also, I heard that the BSD kernel(atleast from 5.1 onward) itself is > > pre-emptible and none of the kernel threads have a cpu affinity. How > > do I change the behaviour to make the kernel non-preemptible and tie > > kernel-threads to a particular CPU ? > > > > Sridhar. > > > > _______________________________________________ > > freebsd-hackers@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > > To unsubscribe, send any mail to > > "freebsd-hackers-unsubscribe@freebsd.org" > > Under Linux, all kernel threads share the same "Kernel" Virtual Address > Space. Is it the same under freeBSD ? If it is not, then what sort of > Stuff gets put into the "Kernel" Virtual Address Space? The simple answer is: "yes they do". > > > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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