On 02/07/2011 08:00 AM, Jonathan Nieder wrote:
Hi kvm-ers,When I boot the HURD with kvm -m 768 -net nic,model=ne2k_pci -net user hurd-installed.qemu it hangs and eventually produces two messages: hd0: unexpected_intr: status=0x58 { DriveReady SeekComplete DataRequest } hd0: irq timeout: status=0x58 { DriveReady Seek Complete DataRequest } More details below[1]. Adding -no-kvm-irqchip to the kvm command line fixes it --- no more hangs or confusing messages (thanks, Guillem!). Bisects (thanks to Michael for the idea) to v2.6.37-rc1~142^2~39 (KVM: Check for pending events before attempting injection, 2010-07-27). Bisection log and kernel configuration available upon request (but probably not too relevant --- the 2.6.37 distro kernel from Debian exhibits the same problem). Reproducible with kvm/master (2d4b4d26, 2011-02-01). CPU is a dual-core AMD Athlon II P360, family 16, model 6. Any hints for tracking this down? For those wanting to follow along at home, you can find a HURD cd to try at [2].
Reproduced on AMD, not on Intel. Given that I see a few PIC and PIT PIOs before the hang, the problem is likely at the PIT. Will look further.
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