Date: Fri, 2 Jul 2010 18:52:18 +0530 From: "Jayachandran C." <c.jayachandran@gmail.com> To: Luiz Otavio O Souza <lists.br@gmail.com> Cc: freebsd-mips@freebsd.org Subject: Re: Merging 64 bit changes to -HEAD Message-ID: <AANLkTimC0yCxUyu1ny4rk4yvqyWTziK_4ACyCn9dN1Fi@mail.gmail.com> In-Reply-To: <D91359EE-D964-49F6-B123-4AB927D4632B@gmail.com> References: <AANLkTik8jFkB7FTIIhyjalkfv1c0yXqse57Jzz527uf_@mail.gmail.com> <897604F6-95C4-49A8-B11F-277A74C8DBAE@gmail.com> <AANLkTilfW_zOFKuIa0gJ3ahTo-vGC1VNk99a1H24uFRq@mail.gmail.com> <AANLkTil78NFxH016C7MntD8L3d4rFlCudJ0Lv22L0KCb@mail.gmail.com> <3C0AEF9B-AE0C-4459-A4E1-2C8C30C10FD6@gmail.com> <AANLkTint7Hyf79EH29OLsIfreQRd7dQMdvX9wRq4v_yG@mail.gmail.com> <C6D73C96-3640-4502-A9D7-B3597E37E80A@gmail.com> <AANLkTilQIqF4FCfgLdVcKdcsAUVjCmr89Lu0TEXUFdYN@mail.gmail.com> <25B9A19D-0A6B-4731-8FB1-A2C6722F0E9C@gmail.com> <AANLkTim_9-G6ZuA0vkpLeG4n4GVBpBlxhGBy_7eQoIM4@mail.gmail.com> <C1BD2512-8A48-4AB2-B9CA-C46DDCBE5256@gmail.com> <AANLkTimgyYggdDYchEfb3yskmA0PsttjVzkOSMaWFsjH@mail.gmail.com> <7886D15B-79BF-4BC6-8467-26A8D0FE3D00@gmail.com> <AANLkTinGkedtaE0EDUWaK-Csjiy1r5pIK5U9uKWTD_PS@mail.gmail.com> <AANLkTinY_RL3PGZ7UaLi16vitt_iag4MoWOImAe8JB06@mail.gmail.com> <22DAE480-DA7B-4C96-99B6-C87ADCD54C93@gmail.com> <AANLkTikWozkwANrvsWuwR66PEUic3FuIQFsU4iJ9fFgj@mail.gmail.com> <D91359EE-D964-49F6-B123-4AB927D4632B@gmail.com>
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On Fri, Jul 2, 2010 at 6:24 PM, Luiz Otavio O Souza <lists.br@gmail.com> wr= ote: > On Jul 2, 2010, at 8:27 AM, Jayachandran C. wrote: >> On Fri, Jul 2, 2010 at 4:34 PM, Luiz Otavio O Souza <lists.br@gmail.com>= wrote: >>> On Jul 1, 2010, at 5:04 PM, Jayachandran C. wrote: >>>>> Looks like I was on the wrong track, it now looks like the pagemask >>>>> maybe the cause. =A0My suspicion is that the bootloader setups a >>>>> pagemask and we never clear it because all the operations save and >>>>> restore the mask. As far as I can see the TLB exception handler will >>>>> not update pagemask. >>>>> >>>>> Juli - any comments on this? Do you need to save/restore pagemask for >>>>> some reason, otherwise I will take out the part from tlb.c. =A0Will s= end >>>>> out a patch a bit later. >>>> >>>> Okay - here's hopefully the final patch. Let me know if it boots up. >>>> >>>> Thanks, >>>> JC. >>>> <tlb.c-pagemask-remove.diff> >>> >>> JC, >>> >>> This patch boots without any problem, thank you ! >> >> At last! :) Thanks for testing. =A0Will get it approved, will check-in >> later today, hopefully. >> >> JC. > > JC, > > Probably too early to talk... > > The buildworld is crashing with this backtrace: http://pastebin.com/1M9h1= B1v > > The function at 8033ba14 is vm_pageout(). > > Let me try a little bit with older kernels just to make sure. Is this happening with -HEAD? If it was working before r209243, can you update to r209243 apply the last patch I sent and see if the issue is caused by the tlb.c changes. But from the panic, it looks likely that this is caused by a later change. Sorry for the trouble, if the tlb.c changes caused this too, I will revert it until I have a way of testing on AR71xx boards too. Thanks JC.
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