Date: Wed, 11 Oct 2000 09:38:48 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: John Baldwin <jhb@freebsd.org> Cc: Andrew Gallatin <gallatin@freebsd.org>, alpha@freebsd.org, dfr@freebsd.org Subject: RE: cvs commit: src/sys/alpha/alpha synch_machdep.c Message-ID: <Pine.BSF.4.21.0010110935190.14648-100000@salmon.nlsystems.com> In-Reply-To: <XFMail.001010183512.jhb@FreeBSD.org>
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On Tue, 10 Oct 2000, John Baldwin wrote: > > On 09-Oct-00 Andrew Gallatin wrote: > > gallatin 2000/10/09 11:47:49 PDT > > > > Modified files: > > sys/alpha/alpha synch_machdep.c > > Log: > > kernacc() only knows about mapped memory, not K0SEG addresses. > > Before calling kernacc(), make sure that we're not calling it > > with a K0SEG address. > > > > This gets alphas booting with SMP_DEBUG & INVARIANTS options > > > > approved by: jhb > > After thinking about this some more, shouldn't we rather be fixing > kernacc() instead? Maybe only if(cold)? I think we should teach the VM system about direct-mapped regions. Certain data structures (zones, vm_page_ts, any malloc which is smaller than a page etc. are a waste of TLBs when you can use a direct-mapped region to get at the memory. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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