I wonder whether this could be remotely related to bug #1265841. I don'T have
any proof there. Just stumbled over some used_math check (followed by potential
init_fpu) right at the beginning of kvm_arch_vcpu_ioctl_run. There was a longer
thread on LKML about that ("[PATCH] Make math_state_restore() save and restore
the interrupt flag").
Though in this case nothing is restored, and I don't see interrupts being
disabled. Also from the stack it seems we are usually later in that function.
So this more loud thinking and putting down notes, so I do not forget....
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Stefan Bader (smb)
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https://bugs.launchpad.net/bugs/1268906
Title:
cpu soft lockup running kvm
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