To answer the question, no there is no TLB in SE for beta 3, but yes there is translation and the dram is addressed with physical addresses. As Ali said, the binary happens to be loaded in such a way that the mappings are simple which may or may not be helpful depending on what you're trying to do.
Gabe Ali Saidi wrote: > I wouldn't say that it is analogous to the page table. Physical frames > are allocated on demand in order up to the amount of physical memory > available in the system. So there is some mixing of stack and heap > pages, but the binary is loaded in such a way that there is a contiguous > block of physical memory for it. > > Ali > > > On Sep 30, 2007, at 5:02 PM, Sujay Sunil Phadke wrote: > >> Thanks for the reply Gabe. Is this true for M5 v2.0b3? (no TLB) >> >> - Sujay >> >> >> On Sun, 30 Sep 2007, Gabriel Michael Black wrote: >> >>> In our repository the TLB is used in both FS and SE mode, and >>> again we >>> hope to make that publicly available soon. In the version you have the >>> TLB is not used in SE mode. Instead, a structure analogous to the page >>> table is used to look up virtual to physical mappings and provides a >>> similar effect. >>> >>> Gabe >>> >>> Sujay Sunil Phadke wrote: >>>> Hi all, >>>> I am running the splash2 benchmarks in SE mode in M5. I want to >>>> capture the DRAM access patterns. I wanted to know if the >>>> physic_address >>>> used in the dram.cc is actually the physical address, (as would be >>>> translated by the TLB in the FS mode), or is it some trivial conversion >>>> from the virtual address? Is the TLB used at all in the SE mode? >>>> >>>> Thanks, >>>> - Sujay >>>> >>>> _______________________________________________ >>>> m5-users mailing list >>>> m5-users@m5sim.org >>>> http://m5sim.org/cgi-bin/mailman/listinfo/m5-users >>> >>> _______________________________________________ >>> m5-users mailing list >>> m5-users@m5sim.org >>> http://m5sim.org/cgi-bin/mailman/listinfo/m5-users >>> >> _______________________________________________ >> m5-users mailing list >> m5-users@m5sim.org >> http://m5sim.org/cgi-bin/mailman/listinfo/m5-users >> > > _______________________________________________ > m5-users mailing list > m5-users@m5sim.org > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users _______________________________________________ m5-users mailing list m5-users@m5sim.org http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
