https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291768
--- Comment #18 from deimos <[email protected]> --- Hello, I also have an AMD EPYC 9132 with nearly the same issues. After setting vm.pmap.la57=0 in /boot/loader.conf, I'm able to boot and run some operating systems. FreeBSD, OpenBSD, and debian 13 trixie seem to work fine inside bhyve. Installing Fedora Workstation 43 and Arch Linux from 2025-11-01 ISO works fine for the installation (based on the 6.17-xx kernel version). Once the system in the VM updates to 6.18.xx kernel version, the kernel panics. Alpine linux 3.2 won't even boot because it uses the 6.18 kernel by default. I've attached a screenshot of the alpine kernel panic when first starting. Both 6.17 and 6.18 report RDSEED2 broken, but only 6.18 seems to fail to boot. As a test, I'm' able to run everything without issue on a Ryzen 9 system (same FreeBSD 15/bhyve/vm configuration with linux-zvol). I have not yet had time to attach gdb to the failing bhyve VMs to figure out what's happening on the EPYC system. -- You are receiving this mail because: You are the assignee for the bug.
