On Thu, Mar 11, 2021 at 02:57:04PM -0600, Babu Moger wrote: > It is related PCID and INVPCID combination. Few more details. > 1. System comes up fine with "noinvpid". So, it happens when invpcid is > enabled. Which system, host or guest? > 2. Host is coming up fine. Problem is with the guest. Aha, guest. > 3. Problem happens with Debian 9. Debian kernel version is 4.9.0-14. > 4. Debian 10 is fine. > 5. Upstream kernels are fine. Tried on v5.11 and it is working fine. > 6. Git bisect pointed to commit 47811c66356d875e76a6ca637a9d384779a659bb. > > Let me know if want me to try something else. Yes, I assume host has the patches which belong to this thread? So please describe: 1. host has these patches, cmdline params, etc. 2. guest is a 4.9 kernel, cmdline params, etc. Please be exact and specific so that I can properly reproduce. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette