Hi
We have hardware accelerator for Video CODEC. The driver for this accelerator allows mapping of device memory(4MB).
Our observation on other OS is that if 1MB page size is used in place of 4 Kb page size(only for this device memory), we get better performance since there are less of tlb flushes.
Is it possible for driver in Linux to allows mmap with page size of 1 MB for device memories so that we can get equivalent performance in Linux.
Regards, Sunil
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