Date: Wed, 11 Apr 2007 18:22:51 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: freebsd-emulation@freebsd.org, Juergen Lock <nox@jelal.kn-bremen.de> Cc: freebsd-ports@freebsd.org Subject: kqemu+amd64: fpudna in kernel mode Message-ID: <461CFD4B.4020801@icyb.net.ua>
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I get swarms of messages "fpudna in kernel mode" in system log when I run qemu with kqemu on FreeBSD 6.2 amd64 host with Windows XP 32-bit guest. I noticed that someone reported this problem a while ago: http://lists.freebsd.org/pipermail/freebsd-emulation/2006-February/001800.html There is no harm done, but the messages are annoying and they might be indicative of some bigger issue. Note that I am running qemu like follows: $ qemu-system-x86_64 ... -m 512 -net tap -net nic -localtime there is no -kernel-kqemu option and "info kqemu" in qemu monitor says that it is enabled for user code. As I understand "fpudna" means "FPU device not available" and the message comes from here: http://fxr.watson.org/fxr/source/amd64/amd64/trap.c on T_DNA ("device not avaialble") _kernel_ fault. BTW, not complaining about the following, but I think I should report it. When I use -kernel-kqemu option I get random crashes of the guest XP (BSOD) with diagnostics like the following (they vary): IRQL_NOT_GREATER_OR_EQUAL PFN_LIST_CORRUPT PAGE_FAULT_IN_NONPAGED_AREA Looks like all three are caused by some sort of memory corruption or driver misbehavior according to the following: http://aumha.org/a/stop.htm -- Andriy Gapon
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