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[Qemu-devel] [Bug 1585971] Re: Host system crashes on qemu with DMA rema
[Qemu-devel] [Bug 1585971] Re: Host system crashes on qemu with DMA remapping
Thu, 26 May 2016 11:59:37 -0000
Sorry, i have to cancel this report.
The problem seems to be somewhere else. After some reboots the same
issue came up again.
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Host system crashes on qemu with DMA remapping
Status in QEMU:
the host system crashes completely, when i try to pass an physical
device without boot option intel_iommu=on set. In older kernel
versions you didn't have to pass that option.
I wonder if this can be easily checked by asking iommu state, avoiding
a crash of the complete system.
cpu model: Intel(R) Core(TM) i7 CPU
qemu version: 2.4.1-r2
kernel version: 4.1.2 x86_64
qemu-system-x86_64 -enable-kvm -drive
file=/vms/prod/fw/fwdata.iso,if=virtio,format=raw -m 512 -nographic -kernel
/data/kernels/vmlinuz-2.6.36-gentoo-r8 -append "root=/dev/vda console=ttyS0
earlyprintk=serial" -net nic,model=virtio,macaddr=DE:AD:BE:EF:2D:AD -net
tap,ifname=tapfw0,script=/etc/qemu/qemu-ifup -device pci-assign,host=03:00.0
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