On 22 August 2011 14:24, Anthony Liguori <aligu...@us.ibm.com> wrote: > Enabling the I/O thread by default seems like an important part of declaring > 1.0. Besides allowing true SMP support with KVM, the I/O thread means that > the > TCG VCPU doesn't have to multiplex itself with the I/O dispatch routines which > currently requires a (racey) signal based alarm system.
Even with iothread it's still signal based (and still racy) -- the only way to get a thread currently executing TCG code to stop doing so is to send it a signal. -- PMM
