(In reply to Benjamin Zeller from comment #13) > > So, fully emulated (non-KVM) machine. So, it runs PAC+BTI instructions > > (-mbranch-protection=standard). > > Could you try to disable Pointer Auth and/or BTI with arm64.nopauth and > > arm64.nobti to check if it improves things? > > Is this a compile time setting or something that I can set on the VM? This is a kernel parameter [0] So, you can set it on grub, at the end of the 'linux' line. [0]: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/Documentation/admin-guide/kernel-parameters.txt