Intel’s Unaccepted Memory Support Updated For Substantially Faster Booting Of TDX VMs

Way back in August Intel posted a set of Linux kernel patches for supporting “unaccepted memory” by the Linux kernel in preparation for next-generation Xeon processors and speeding up the boot time for guest virtual machines making use of Intel’s Trust Domain Extensions (TDX) security feature. Unaccepted memory support hasn’t yet made it to the mainline kernel but now a second iteration of the patches have been posted.