Date: Thu, 20 Aug 2015 12:12:20 +0200 From: Svatopluk Kraus <onwahe@gmail.com> To: Dmitry Marakasov <amdmi3@amdmi3.ru> Cc: Adrian Chadd <adrian.chadd@gmail.com>, "freebsd-arm@FreeBSD.org" <freebsd-arm@freebsd.org>, Ian Lepore <ian@freebsd.org> Subject: Re: Instability likely related to new pmap on Cubieboard A10 Message-ID: <CAFHCsPUfMhkCjiip7o6ZwGx4jNb1-Xqptsj9h_CzZ8xtfZswiA@mail.gmail.com> In-Reply-To: <20150819232836.GA1245@hades.panopticon> References: <20150819002103.GC79354@hades.panopticon> <1439944961.242.150.camel@freebsd.org> <20150819013834.GD79354@hades.panopticon> <CAJ-VmokJv=nvcEkBogWeNJT65MosxnFcaitWn8FXJu32eahSdw@mail.gmail.com> <20150819120753.GH79354@hades.panopticon> <CAFHCsPVSGuWWY97ac2QVGAE77Lz2gJ12wDLpzH_kNdZsLQxh%2BQ@mail.gmail.com> <20150819134708.GJ79354@hades.panopticon> <CAFHCsPVwZS_rCnvKztg7g2%2BvrOBwQpqpPYyA2=hCLGiiU5=mrQ@mail.gmail.com> <20150819232836.GA1245@hades.panopticon>
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--047d7bd7575808188a051dbb6378 Content-Type: text/plain; charset=UTF-8 On Thu, Aug 20, 2015 at 1:28 AM, Dmitry Marakasov <amdmi3@amdmi3.ru> wrote: > * Svatopluk Kraus (onwahe@gmail.com) wrote: > >> >> Great! I'm hunting this kind of panic for long time, but it never was >> >> so stable. Can you send me "show pmap addr" output from kdb after >> >> panic - pmap address is in panic message. >> > >> > https://people.freebsd.org/~amdmi3/pmap.log >> > >> >> Can you apply debug patch I'm attaching, enable KTR in your config >> with KTR_PMAP mask at least, and send me output of the following >> commands after panic : >> >> show ktr >> show pmap >> >> Output from ktr should be scrolled until a line like >> "pmap_remove_page - pmap xxx" will be in there. > > https://people.freebsd.org/~amdmi3/pmap1.log > > show ktr output is quite big, I've only scrolled through a part of it. > Thank you. I have not noticed until now that you are running Cortex A8. We have an open issue on BBB which is A8 too. Can you try to disable promotion - i.e. edit the following line in pmap-v6-new.c: static int sp_enabled = 1; and set the variable to zero. If it helps, set it again to 1 and try attached patch, please. If neither the first nor the seconf attemp will work, can you send me output like before but from another panic. I would like to see diference. Thanks, Svata --047d7bd7575808188a051dbb6378 Content-Type: application/octet-stream; name="pm_pt1_wip3.patch" Content-Disposition: attachment; filename="pm_pt1_wip3.patch" Content-Transfer-Encoding: base64 X-Attachment-Id: f_idk1iqb20 ZGlmZiAtLWdpdCBhL3N5cy9hcm0vYXJtL3BtYXAtdjYtbmV3LmMgYi9zeXMvYXJtL2FybS9wbWFw LXY2LW5ldy5jCmluZGV4IDEzYTk3ZGUuLjYwZGQzYTIgMTAwNjQ0Ci0tLSBhL3N5cy9hcm0vYXJt L3BtYXAtdjYtbmV3LmMKKysrIGIvc3lzL2FybS9hcm0vcG1hcC12Ni1uZXcuYwpAQCAtMTQ1Niw2 ICsxNDU2LDE0IEBAIHN0YXRpYyB1X2xvbmcgcG1hcF9wdGUxX2RlbW90aW9uczsKIFNZU0NUTF9V TE9ORyhfdm1fcG1hcF9wdGUxLCBPSURfQVVUTywgZGVtb3Rpb25zLCBDVExGTEFHX1JELAogICAg ICZwbWFwX3B0ZTFfZGVtb3Rpb25zLCAwLCAiMU1CIHBhZ2UgZGVtb3Rpb25zIik7CiAKK3N0YXRp YyB1X2xvbmcgcG1hcF9wdGUxX2tkZW1vdGlvbnM7CitTWVNDVExfVUxPTkcoX3ZtX3BtYXBfcHRl MSwgT0lEX0FVVE8sIGtkZW1vdGlvbnMsIENUTEZMQUdfUkQsCisgICAgJnBtYXBfcHRlMV9rZGVt b3Rpb25zLCAwLCAiMU1CIHBhZ2Uga2VybmVsIGRlbW90aW9ucyIpOworCitzdGF0aWMgdV9sb25n 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