On Tue, Apr 29, 2025, Peter Zijlstra wrote: > On Mon, Apr 28, 2025 at 10:13:31AM -0700, Sean Christopherson wrote: > > On Sat, Apr 26, 2025, Peter Zijlstra wrote: > > > On Wed, Apr 16, 2025 at 10:38:59AM +0200, Peter Zijlstra wrote: > > > > > > > Yeah, I finally got there. I'll go cook up something else. > > > > > > Sean, Paolo, can I once again ask how best to test this fastop crud? > > > > Apply the below, build KVM selftests, > > Patch applied, my own hackery applied, host kernel built and booted, > foce_emulation_prefix set, but now I'm stuck at this seemingly simple > step.. > > $ cd tools/testing/selftests/kvm/ > $ make > ... metric ton of fail ... > > Clearly I'm doing something wrong :/ Did you install headers in the top level directory? I.e. make headers_install. The selftests build system was change a while back to require users to manually install headers (I forget why, but it is indeed annoying).