Messages in this thread | | | Date | Fri, 29 Apr 2005 13:32:16 -0400 | From | Dave Jones <> | Subject | Re: x86-64 bad pmds in 2.6.11.6 II |
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On Fri, Apr 29, 2005 at 07:12:59AM -0400, Christopher Warner wrote: > > > 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.
Datapoint: exactly the same model as my workstation which showed this problem recently.
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