Re: xen on i7-12700: works with cet-no-ibt !!

[Greg Troxel <gdt%lexort.com@localhost>]

Manuel Bouyer <bouyer%antioche.eu.org@localhost> writes:

> Why do you think PVHVM is faster than PVH ? I'd expect the opposite actually

I would also expect the oppposite but what I'm seeing is:

** baremetal n10-amd64

       27.58 real        18.53 user         6.40 sys
       27.55 real        18.35 user         6.57 sys
       27.56 real        18.42 user         6.50 sys
       27.57 real        18.48 user         6.44 sys

** domU-pv n10-amd64

       70.99 real        32.73 user        33.13 sys
       69.59 real        32.32 user        33.57 sys
       69.32 real        32.34 user        33.49 sys
       69.33 real        32.25 user        33.55 sys

** domU-pvh n10-amd64

       46.12 real        29.66 user        11.75 sys
       46.62 real        30.73 user        12.61 sys
       46.75 real        30.44 user        13.03 sys
       46.80 real        30.98 user        12.52 sys

** domU-pvhvm n10-amd64

       35.72 real        23.09 user         7.99 sys
       34.34 real        23.12 user         7.99 sys
       34.37 real        23.10 user         8.04 sys
       34.38 real        23.24 user         7.92 sys



It would be interesting if someone else did benchmarks (my m4 one, or
something they think is better) on their hardware.


One thing that's nice about pvhvm is that you can switch from
pv/pvh/pvhvm without having to change fstab becuase it's all xbd0a.  As
opposed to (not-pv)hvm, where it's wd0a.