Date: Tue, 9 Oct 2018 23:07:52 +0200 From: Andreas Tobler <andreast-list@fgznet.ch> To: Mark Millard <marklmi@yahoo.com>, Justin Hibbits <chmeeedalf@gmail.com> Cc: Michael Tuexen <tuexen@fh-muenster.de>, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: Failed attempt to boot a (non-debug) head -r339076 on an old PowerMac G5 "Quad Core" (built via devel/powerpc64-gcc): Waking up CPU 1 Message-ID: <68d24bdd-9542-3007-3deb-271dcb722e9e@fgznet.ch> In-Reply-To: <4fe5af91-bbef-7873-3c48-4b1b440c871a@fgznet.ch> References: <0E6DB192-37A3-45EC-87E9-C5AA1C9397AE@yahoo.com> <785D268A-2612-459F-BD1F-A650D9ECCA28@fh-muenster.de> <A62CE721-B12A-4A79-BC43-F4E0F412D695@yahoo.com> <A7E94F86-E160-4E58-8C44-99DE109D2758@fh-muenster.de> <3DCB6910-6F08-408A-B3D1-70A7EB5A55BC@yahoo.com> <037e3dd6-cc0c-a39f-f074-bce01887156c@blastwave.org> <20181008152746.1aba4221@ralga.knownspace> <AF5D435D-727A-4C8B-8E9C-749CDB1E2140@yahoo.com> <031407DB-57AD-4E09-9A22-A0D4A347576E@yahoo.com> <C0FD8A95-A3DA-45FA-A59E-C7308EA95DFF@yahoo.com> <C6D71821-60D9-41E4-810B-008CDA772A80@yahoo.com> <4fe5af91-bbef-7873-3c48-4b1b440c871a@fgznet.ch>
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On 09.10.18 22:40, Andreas Tobler wrote: > On 09.10.18 22:35, Mark Millard via freebsd-ppc wrote: >> [Reverting head -r334498 in my head -r339076 context was enough to get >> the G5 so-called "Quad Core" to boot just fine as a variant of >> -r339076 .] >> >> On 2018-Oct-9, at 12:54 PM, Mark Millard <marklmi at yahoo.com> wrote: >> >>> On 2018-Oct-9, at 8:20 AM, Mark Millard <marklmi at yahoo.com> wrote: >>> >>>> [The stable/head mix seems to be a wrong idea: 11.2 gets past >>>> the SMP: messages just fine on the so-called G5 "Quad Core".] >>>> >>>> On 2018-Oct-8, at 5:14 PM, Mark Millard <marklmi at yahoo.com> wrote: >>>> >>>>> On 2018-Oct-8, at 1:27 PM, Justin Hibbits <chmeeedalf at gmail.com> wrote: >>>>> >>>>>>> . . . >>>>>> >>>>>> It would be helpful to know the last known-good SVN revision, both for >>>>>> Head and 11.x, as well as the oldest failing one. Since my G5 bit the >>>>>> dust, I can't check locally. >>>>> >>>> . . . >>> >>> There are examples of head's kernels that sometimes >>> fail to get to the "SMP:" messages and sometimes work >>> for getting there (and beyond). So: >>> >>> My reporting any example failure is a solid indicator >>> of the "does not reach "SMP:" problem in that build. >>> (All tries reached the waking message on at least cpu >>> 1.) >>> >>> My reporting "worked" for a revision might be a >>> misclassification. (This makes for a messier >>> "binary-like search".) >>> >>> That said, the summary of the later detail is: >>> >>> head -r334494 kernel worked >>> head -r334528 kernel failed >>> >>> (There is nothing between those for: >>> >>> https://artifact.ci.freebsd.org/snapshot/head/r*/powerpc/powerpc64/kernel.txz >>> >>> so getting a smaller range requires builds. >>> I've not attempted that.) >>> >>> The only machine-dependent powerpc64 change between >>> those 2 that I see is: >>> >>> Author: jhibbits >>> Date: Fri Jun 1 21:37:20 2018 >>> New Revision: 334498 >>> URL: >>> https://svnweb.freebsd.org/changeset/base/334498 >>> >>> >>> Log: >>> Increase powerpc64 KVA from ~7.25GB to 32GB >>> . . . >>> >>> . . . >> >> In my -r339076 build context I reverted -r334498, did a >> buildkernel, installed it, and rebooted into -r339076. >> >> The result booted just fine. >> >> It does appear that, for head, -r334498 makes the difference >> for some reason. > > Unfortunately I have to confirm your findings. Mark, how much physical ram do you have? Can you adjust the VM_MAX_KERNEL_ADDRESS just below the amount of RAM you have and see if -CURRENT boots? Here it does, I have 14GB and I adjusted VM_MAX_KERNEL_ADDRESS to 12GB. It is just a trial to find out what is happening. Thanks, Andreas
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