Thomas> Really? The idea of FMR, I thought, was to preallocate the
Thomas> TPT entry up front (alloc_fmr), and then populate it with
Thomas> the lightweight fmr api (map_phys_fmr).
Yes, you do save that cost with FMRs. However, the other advantage of
FMRs is that the cost of pipeline flushing to invalidate cached
translations can be amortized over multiple FMRs at once (by lazily
unmapping a list of FMRs).
- R.
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