On Wed, Mar 02, 2016 at 11:40:04AM +0300, David Kiarie wrote:
> What effect is setting the value next_bit to last invalidated index
> supposed to have ?
The idea is to safe the IOTLB flush by not re-using the address-range
until the allocator wraps around to 0 again. We only allocate address
ranges between next_bit and end-of-range. This way we don't need a flush
after every unmap operation.
Joerg
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