On 09/14/2016 12:19 AM, Juerg Haefliger wrote: > Allocating a page to userspace that was previously allocated to the > kernel requires an expensive TLB shootdown. To minimize this, we only > put non-kernel pages into the hot cache to favor their allocation.
Hi, I had some questions about this the last time you posted it. Maybe you want to address them now. -- But kernel allocations do allocate from these pools, right? Does this just mean that kernel allocations usually have to pay the penalty to convert a page? So, what's the logic here? You're assuming that order-0 kernel allocations are more rare than allocations for userspace?
