Am 01.06.23 um 15:53 schrieb DERUMIER, Alexandre: >>> >>> What AMD CPUs did you try it on? >>> >> epyc v2/v3 with last microcodes >> >> >> does it work with x86-64-v3 ? (because the other patch of the series >> could autofind the best new model if it's working) > > Looking at linux kernel code, they have some quirks based on cpu model > number && vendor > > nehalem is .family = 6, .model = 26, > > kvm64 is .family = 15, .model = 6 > > qemu64 is.family = 15, .model = 107, >
Yeah, could be. I did try today with qm set 102 -args '-cpu Nehalem,+aes,-svm,-vmx,model-id="foo bar",vendor="AuthenticAMD"' and couldn't trigger the issue getting stuck during installation anymore. Switching back to manually selected Nehalem in the UI with the generated -cpu Nehalem,+aes,enforce,+kvm_pv_eoi,+kvm_pv_unhalt,vendor=GenuineIntel I got the hang during my first installation attempt again. Then I tried around a bit more and now I'm suspecting it is something in combination with the +kvm_pv_unhalt flag. I got a hang with just qm set 102 -args '-cpu Nehalem,+kvm_pv_unhalt,vendor=GenuineIntel And I didn't ever get a hang without that flag yet. Aaron had also only had hangs with that flag. But it's not like it hangs every time with the flag either. > > maybe it could be interesting to test with adding flags from > qemu64/kvm4 to see if it's the same behaviour ? > > > from kvm64, xf86-64-v2 is > > '+lahf_lm,+popcnt, +sse4.1,sse4.2, +ssse3' (and optionnal +aes) Yes, let's do that! It does sound cleaner than to base it off Nehalem. FWIW, qm set 102 -args '-cpu kvm64,enforce,+kvm_pv_eoi,+kvm_pv_unhalt,+sep,+lahf_lm,+popcnt,+sse4.1,+sse4.2,+ssse3' worked just now, but will need to test more tomorrow. > does it work with x86-64-v3 ? (because the other patch of the series > could autofind the best new model if it's working) I didn't test, but I'd be careful with bumping it even more. I'd like to focus on getting the new default in for the next major release. The best model selection needs more consideration and can always be added after the release. _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
