Date: Tue, 1 Apr 1997 21:09:09 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-hackers@FreeBSD.ORG Cc: pmchen@eecs.umich.edu (Peter M. Chen) Subject: Re: question on buffer cache and VMIO Message-ID: <19970401210909.DC36612@uriah.heep.sax.de> In-Reply-To: <199704011439.JAA26225@life.eecs.umich.edu>; from Peter M. Chen on Apr 1, 1997 09:39:42 -0500 References: <199704011439.JAA26225@life.eecs.umich.edu>
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As Peter M. Chen wrote: > Questions re: buffer cache and VMIO While i cannot answer these... > General kernel questions: > 1) I'd like the ability to read and write kernel global > variables (without going to ddb). I tried kvm, but that only works > for variables in i386/i386/symbols.raw. Are you sure about this? I've got my nose in dset(8) some time ago, and it really uses kvm for variables that are not listed in symbols.raw. > kgdb only works for > off-line core dumps. No. ``gdb -k /kernel /dev/mem'' debugs your currently running kernel. Add -w to the commandline, and you'll be allowed to write (unless you're running on a higher securelevel, but then you're at a loss anyway). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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