Hi Gao, Jan On Tue, Jun 11, 2019 at 08:36:17PM +0800, Chao Gao wrote: > On Wed, Jun 05, 2019 at 08:09:43AM -0600, Jan Beulich wrote: > > > >There's no comment here and nothing in the description: I don't > >recall clarification as to whether RDTSC is fine to be issued by a > >thread when ucode is being updated by another thread on the > >same core. > > Yes. I think it is fine. > > Ashok, could you share your opinion on this question? >
Yes, rdtsc should be fine for other threads to execute while waiting for the microcode update to complete on others. We do the same in Linux as well. Cheers, Ashok _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
