Without KVM, qemu inserts an invalid 12-GiB reserved entry at the end of the physical address space, making the kernel reserve way more space than necessary for the page bitmap (and overwriting the page directory pages).
Without KVM, qemu inserts an invalid 12-GiB reserved entry at the end of the physical address space, making the kernel reserve way more space than necessary for the page bitmap (and overwriting the page directory pages).