On 5/3/21 8:15 AM, Andy Lutomirski wrote: > How much performance do we get back if we add a requirement that only > 2M pages (hugetlbfs, etc) may be used for private guest memory? Are you generally asking about the performance overhead of using 4k pages instead of 2M for the direct map? We looked at that recently and pulled together some data: > https://lore.kernel.org/lkml/213b4567-46ce-f116-9cdf-bbd0c884eb3c@xxxxxxxxxxxxxxx/
