Set a non-arbitrarily chosen allowed value for memory erasure coverage
Originally created by @anonym on #7313 (Redmine)
In the step “I find very few patterns in the guest’s memory” in
memory_erasure.feature
we set max_coverage = 0.0025
, i.e. we allow
less than 0.25% of memory to not be wiped. The efficiency of our memory
erasure approach seem to differ depending on kernel version,
architecture (64-bit vs 32-bit) and the phase of the moon, so we
sometimes have to arbitrarily bump it as well.
We should come up with a sound value for max_coverage
, preferably
based on Hard Science™.