Date: Wed, 27 Jul 2005 10:14:02 +0200 From: Gary Jennejohn <garyj@jennejohn.org> To: NAKATA Maho <chat95@mac.com> Cc: freebsd-amd64@freebsd.org Subject: Re: Tyan S2885 Thunder K8W lockups Message-ID: <200507270814.j6R8E2Mc006780@peedub.jennejohn.org> In-Reply-To: Message from NAKATA Maho <chat95@mac.com> of "Wed, 27 Jul 2005 15:43:29 %2B0900." <20050727.154329.71086249.chat95@mac.com>
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NAKATA Maho writes: > How to lockup: > # dd if=/dev/mem of=/dev/null bs=1024k > about 50 seconds later it lockups. 100% reproducible. > * Both Optimal/Failsafe setting in BIOS > * Both MTRR Mapping Continuous/Disabled > * set hw.physmem="4G" doesn't help > > workaround: > on board GbE (bge0) and SATA disabled. > > any hints or comments? > I could be wrong, but it seems to me that you might be accessing HW address space with resulting undesirable side effects since you're trying to read the entire range which /dev/mem maps. --- Gary Jennejohn / garyjATjennejohnDOTorg gjATfreebsdDOTorg garyjATdenxDOTde
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