On 12/12/18 21:39, Borislav Petkov wrote: > On Tue, Dec 11, 2018 at 11:29:21AM -0800, Maran Wilson wrote: >> Is your question about what options you need to provide to Qemu? Or is your >> question about the SW implementation choices? >> >> Assuming the former... > Yeah, that's what I wanted to know. But looking at it, I'm booting > bzImage here just as quickly and as flexible so I don't see the > advantage of this new method for my use case here of booting kernels > in qemu.
It's not firmware that is slow, decompression is. Unlike Xen, which is using PVH with a regular bzImage and decompression in the host, KVM is using PVH to boot a vmlinux with no decompression at all. Paolo > But maybe there's a good use case where firmware is slow and one doesn't > really wanna noodle through it or when one does start a gazillion VMs > per second or whatever...
