[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Re: computer stalls instead of reboot
Am 09.09.2011 15:45, schrieb Sven KÃhler: I wonder, what the disadvantage are. The hypervisor will still regulate CPU frequency, will it not? No, it will not. Also, is the dom0 kernel doing something that it shouldn't do? (maybe something that collides with the ACPI-related activities of the hypervisor, if there are any?) I guess the BIOS is simply reporting broken ACPI tables to the operating system (the board is a "consumer" board, so you can guess that the manufacturer only tests the ACPI-tables for compatability with Windows). The ACPI tables (AFAIK, someone correct me) also contain a method for rebooting the system, which simply doesn't work/is broken when Xen is involved. Forcing acpi=off means that the normal triple-fault or kbd-controller reset machinery is always used, as ACPI isn't even initialized. What struck me as odd, though: you can configure Linux to use "some other" form of hard reset through a kernel parameter, but setting that to explicitly use triple-faults didn't work, either (same hangs), so possibly it's some form of additional interaction between Xen, the board and the hypervisor. Anyway, the Hetzner "recommended" fix is just what I sent you, and I can confirm that works. -- --- Heiko. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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