Messages in this thread | | | Subject | Re: x86-64 bad pmds in 2.6.11.6 II | From | Christopher Warner <> | Date | Fri, 29 Apr 2005 07:12:59 -0400 |
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> It does. Well, I needed to restudy exec_mmap and switch_mm in detail, > and having done so, I agree that the only way you can get through > exec_mmap's activate_mm without fully flushing the cpu's TLB, is if > the active_mm matches the newly allocated mm (itself impossible since > there's a reference on the active_mm), and the cpu bit is still set > in cpu_vm_mask - precisely not the case if we went through leave_mm. > Yet I was claiming your leave_mm fix could flush TLB for exec_mmap > where it wasn't already done. > > Sorry for letting the neatness of my pmd/stack story blind me > to its impossibility, and for wasting your time. > > Hugh > -
Any updated information one should know about this before testing?
I'm getting bad pmds in 2.6.11.5; Tyan S2882/dual AMD 246 opterons. The problem only occurs when doing some thread intensive task. I'm going to try and strace/bt and send some information as it occurs. Hardware is almost identical to the setup above.
-Christopher Warner
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