Re: [Qemu-devel] [RFC PATCH V7 07/19] protect TBContext with tb_lock.

[Paolo Bonzini]

On 11/08/2015 08:46, Frederic Konrad wrote:
>> I think you should start easy and reuse the existing tb_lock code in
>> cpu-exec.c:
> 
> I think it's definitely not sufficient. Is user-mode multithread still
> working today?

For some definition of "working", yes.  It's not sufficient, but it's a
good start.

The main problem with user-mode multithreading is that there is no clear
lock hierarchy between mmap_lock and tb_lock.  But this is not a problem
for softmmu.

Paolo