On Sat, Mar 19, 2016 at 11:40:04AM +0200, Aviv B.D. wrote: [...] > As far as I understand the code, currently there is no way to turn off the > IOTLB. > Furthermore. the IOTLB is not implemented as LRU, and actually caches > (indefinitely) > any accessed address, without any size constrains. I use those assumptions > to know > whether the current invalidation is for unmap operation or map operation.
Please have a look at VTD_IOTLB_MAX_SIZE. It seems to be the size of the hash. Btw, I guess it's a much bigger problem if IOTLB has unlimited cache size... Thanks. -- peterx
