Hi Steve, If I just do allocateMem and don't do 'writeBlob', then simulation runs fine without errors but I get '0' values in the result. This is understandable. But If I do writeBlob then I always get page fault exception exactly at the same clock tick (just before the benchmark finishing the execution)
Regards, On 31 October 2014 17:11, Steve Reinhardt <ste...@gmail.com> wrote: > I don't know... that's basically a page fault. Do you know the address > range that your file is mapped to? It may or may not be directly related > to mmap. > > Steve > > On Fri, Oct 31, 2014 at 6:33 AM, Ahmad Hassan <ahmad.has...@gmail.com> > wrote: > >> Hi Steve, >> >> I am running x96 SE mode. The writeBlob() works fine for very small test >> application. For real benchmark with 1GB working set, the simulation ends >> with exception: >> >> panic: Tried to read unmapped address >> 0x2800000002d773b0. >> 0x2aaaaaaab000ULL >> @ tick 771687885000 >> [invoke:build/X86/arch/x86/faults.cc, line 160] >> Memory Usage: 11788528 KBytes >> Program aborted at tick 771687885000 >> >> Any ideas why 0x2800 range is getting problems by writeBlob? >> >> Thanks. >> >> >> >> On 7 October 2014 15:20, Steve Reinhardt <ste...@gmail.com> wrote: >> >>> We have a patch internally that implements more of mmap(), but >>> unfortunately it's not quite ready to post. >>> >>> If you just want to do a read mapping (you don't care if writes to the >>> mmap'd region get written back to disk), and you don't mind just reading >>> the whole mmap region in up front (which you need to do, since SE mode >>> doesn't support page faulting), it's not too hard; just call >>> p->allocateMem() to allocate the memory in the simulated process, and then >>> read the data out of the file and use writeBlob() to copy it into the >>> memory you just allocated. >>> >>> Steve >>> >>> On Tue, Oct 7, 2014 at 6:14 AM, Ahmad Hassan via gem5-users < >>> gem5-users@gem5.org> wrote: >>> >>>> Hi, >>>> >>>> The existing implementation in GEM5 SE mode only supports MMAP to >>>> /dev/zero. Has anyone implemented MMAP in gem5 that can map a file from the >>>> disk? If not, how can I extend this? >>>> >>>> Regards, >>>> >>>> _______________________________________________ >>>> gem5-users mailing list >>>> gem5-users@gem5.org >>>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >>>> >>> >>> >> >
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