Date: Sat, 4 Jan 1997 20:21:29 +1100 From: Bruce Evans <bde@zeta.org.au> To: avalon@coombs.anu.edu.au, se@FreeBSD.ORG Cc: freebsd-hackers@FreeBSD.ORG, hans@brandinnovators.com Subject: Re: bootloader & memory test... Message-ID: <199701040921.UAA30161@godzilla.zeta.org.au>
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>Besides the point, that it would be very complex to do the right thing >if this code ever finds a problem, such a test would guarantee, that >the caches are "empty" every time you leave the idle loop. ;) Actually, the test would want to work on non-cached pages to be sure of testing main memory. You could even run the code from a cached pages to avoid losing I-cache, but I suppose a really good memory test program should lock itself into the L1 cache to avoid side effects. It would also disable interrupts ... Not good for an idle loop. Bruce
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