On Thu, May 11, 2023 at 11:11:07PM +0000, Michael Kelley (LINUX) wrote: > From: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Sent: Thursday, May 11, 2023 1:24 PM > > > Tianyu and Michael, what's your thought on this? > > > > > > Is the MSR-based GHCB usable at this point? > > > > > > What other clock source can be used? > > > > You do have TSC support -- which is what I fixed for you. It's just the > > whole MSR thing that is comically broken. > > > > You could do a read_hv_clock_msr() implementation using > > __rdmsr() and add some sanity checking that anything GHCB using (SEV?) > > *will* use TSC. > > > > Anyway, will you guys do that, or should I pull out the chainsaw and fix > > it for you? > > Peter -- I'll work on a fix. But it will be the first half of next week before > I can do it. OK, Thanks!
