I remember seeing something similar before. This was supposed to be fixed by the linux kernel commit.
commit 841c2be09fe4f495fe5224952a419bd8c7e5b455 Author: Maxim Levitsky <mlevi...@redhat.com> Date: Wed Jul 8 14:57:31 2020 +0300 kvm: x86: replace kvm_spec_ctrl_test_value with runtime test on the host # git describe --contains 841c2be09fe4f495fe5224952a419bd8c7e5b455 v5.9-rc1~121^2~67 Problem seems to happen with EPYC-Rome model which exposes the feature STIBP but not IBRS. Did you guys try "-cpu host"? It might work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1915063 Title: Windows 10 wil not install using qemu-system-x86_64 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1915063/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs