Hi, Was there any progress made about this issue or is it still pending ? I'm running 2.6.11 and still see the problem...
Regards, Guillaume. Marcelo Tosatti wrote: >On Thu, Feb 10, 2005 at 03:06:58PM -0200, Marcelo Tosatti wrote: > > >>On Thu, Feb 10, 2005 at 02:26:52PM -0500, Dan Malek wrote: >> >> >>>On Feb 10, 2005, at 10:04 AM, Marcelo Tosatti wrote: >>> >>> >>> >>>>Does anyone have a clue of what is/can be wrong with the TLB entry for >>>>the >>>>address being flushed at __flush_dcache_icache()? >>>> >>>> >>>Not sure. The problem is that the __flush_dcache_icache is passed a >>>user space virtual address that doesn't look like it is mapped for >>>writing >>>or something. I don't know, as an ooops isn't sufficient to debug the >>>problem. >>>You have to catch it here and track down the current state of the TLB >>>and >>>the page tables. Of course, when I do this everything looks OK, >>> >>> >>How do you do track down the current TLB state? With a BDI? >> >> >> >>>so what I've been trying to do is catch the TLBmiss reload that actually >>>causes >>>this >>>to happen to see what it really tried to load into the tlb. >>> >>> >>Shouldnt it be loading the TLB entry which "seem to be OK" accordingly to your >>analysis ?? >> >> > >So this assumption which you have made sometime ago is wrong, given that now >you >know TLB entry is not stale ? > >"The symptom is we appear to have a stale TLB entry, >so at least one of the callouts from the generic VM >code isn't doing the right thing for us. I'm still >puzzled as to why it doesn't affect other PPC processor." > >_______________________________________________ >Linuxppc-embedded mailing list >Linuxppc-embedded at ozlabs.org >https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > > -- ======================================= Guillaume Autran Senior Software Engineer MRV Communications, Inc. Tel: (978) 952-4932 office E-mail: gautran at mrv.com ======================================= -------------- next part -------------- An HTML attachment was scrubbed... URL: http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20050321/67445903/attachment.htm
