On 06/10/2015 14:49, Peter Maydell wrote: > Yeah, there's no guarantee on userspace access. I think the > fastest way to get some kind of count is to use a library > function that boils down to gettimeofday(2), which we will > do purely in userspace in the kernel VDSO if possible.
Could we just use CNTVCT_EL0? Which cores have it? Paolo
