Hi Ben, This is a great question! To be honest, I don't know the answer. I think it will have something to do with the E820 entries in the config file, but I don't know exactly how to do it. See this issue about trying to create a more realistic memory layout for Linux: https://gem5.atlassian.net/browse/GEM5-11.
Let us know if you figure anything out! Feel free to comment on that issue or the sub tasks. Cheers, Jason On Thu, Feb 27, 2020 at 8:35 AM Ben Perach <bper...@gmail.com> wrote: > Hi all, > > I am trying to create a multicore system with two memory types, one is a > regular DRAM and the other memory has a longer latency. The memories are > located on different memory channels but have the same interconnect > latency, the only latency difference is between the memory controller and > the memory itself due to memory technology. The address range of each > memory is continues and not interleaved. (This is something like a > multicore system with DRAM and persistent memory). > > In order to be able to assign pages specifically to each memory, I want > the OS to recognize the two memories as two different NUMA nodes. > How can I make gem5 fs to report to the OS that the two memory address > ranges belong to different NUMA nodes? > Can I add some component to the configuration script to make this happen? > Do I need to change the BIOS somehow? > > (I have tried using the numa=fake tool on Linux, but it did not create new > fake nodes.) > > Thank you very much, > Ben Perach > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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