On 3 January 2013 00:45, Adrian Taylor <adr...@bromium.com> wrote: > One possibility - qemu uses coroutines for IO. There are various backends > for coroutines, and the qemu configure script will try to choose the best > one. Perhaps your environment is lacking system calls such as makecontext > and the configure script is falling back to a coroutine backend using > pthreads.
ARM Linux should support the default 'ucontext' backend but I haven't checked recently. You can check by looking at the output of configure: at the end when it prints its findings there is a line "coroutine backend $whatever". 'ucontext' is good, 'gthread' is bad :-) -- PMM
