Date: Sun, 01 Feb 2015 08:02:55 -0800 From: Nathan Whitehorn <nwhitehorn@freebsd.org> To: freebsd-ppc@freebsd.org Subject: Re: HEADS UP: powerpc64 kernel format change [booted a PowerMac G5 quad-core] Message-ID: <54CE4E2F.3080807@freebsd.org> In-Reply-To: <2AD25D1A-80C0-473B-BD04-9AA512811AF6@dsl-only.net> References: <2AD25D1A-80C0-473B-BD04-9AA512811AF6@dsl-only.net>
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So this has to be some kind of icache issue. If you unload and reload the *same* kernel, does it also help? -Nathan On 02/01/15 00:04, Mark Millard wrote: > Just an FYI, not a request for anything. > > I've booted my powerpc64 11.0-CURRENT -r277990 "GENERIC64vtsc" variant on a PowerMac G5 quad core, but a little oddly. I've also used the new loader to boot 10.1-RELEASE-p5 and 10.1-STABLE (-r277808), 10.1-RELEASE-p5 being a normal boot but 10.1-STABLE also being odd in the same way as 11.0-CURRENT. (The oddity is not new to the -r277990 context.) > > Before attempting this I'd already adapted my powermac-g5-more-reliable-booting-investigation-hacks to powerpc64 11-CURRENT after the relocatable kernel changes touched ofwcall64.S and I had booted a with-hack 11.0-CURRENT kernel before this. (The recent Justin H. patch for fan/pump RPMs is also present, although the problem powermac is gone.) > > Like for 10.1-STABLE, for 11-CURRENT (-R277990) the sequence buildworld, buildkernel, installkernel, installworld, reboot failed to boot before getting to the "any other key for a command prompt" stage, although the SRR0 figure was different. > > %SRR0: 00000000.01c287ac (10.1-STABLE reports 1c277fc) > %SRR1: 10000000.00003030 > > But the same technique that allows me to boot 10.1-STABLE works for 11-CURRENT as well. More below for what I did to have 11-CURRENT kernel+world running despite the above. > > To make swapping contexts easier I've established copies of the 3 vintages of loader, each copy established just after the matching installworld: > > $ ls -F /boot/loader /boot/loader1* > /boot/loader* /boot/loader10.1S_from_usr_obj* > /boot/loader10.1RE* /boot/loader11C* > /boot/loader10.1RE_from_usr_obj* /boot/loader11C_from_usr_obj* > /boot/loader10.1S* > > and I copy /boot/loader11C to /boot/loader to test using it for whatever I'm going to boot with it. (I've not tried any that I copied from /usr/obj/... I may just delete those.) "RE" stands for RelEng, "S" for Stable, "C" for Current. > > Note that 10.1RE here is 10.1-RELEASE-p5 (RELENG -r277807) but with my original powermac-g5-more-reliable-booting-investigation-hacks and the fan/pump RPM patch. (My 10.1-STABLE has those as well.) > > I also have separate kernel copies (via INSTKERNNAME use): > > $ ls -Fd /boot/kernel* > /boot/kernel/ /boot/kernel10.1RE/ /boot/kernel10.1S/ /boot/kernel11C/ > > (Ignore /boot/kernel here. I tend to use the other ones.) > > And I use /boot/loader.conf to control which kernel is initially started, such as: > > $ more /boot/loader.conf > kernel="kernel10.1RE" > verbose_loading="YES" > kern.vty=vt > > The kernel10.RE one boots and runs fine with any of the 3 vintages of loader. Listing kernel10.1S or kernel11C in loader.conf instead gets the SRR0/SRR1 failures referenced above, even when loader (and world) is from the matching buildworld. > > So I boot as above (kernel10.1RE) but use the "any other key for a command prompt" to stop it and then (for example): > > unload > boot kernel11C > > and that boots and runs fine if I've done the 11-CURRENT installworld before the reboot. > > (At this point 10.1-RELEASE-p5 and 10.1-STABLE buildworlds (loader updated) do not mix very well with 11-CURRENT kernels. "init: getting kqueues resource limit invalid argument" notices are an example. And I had kernel panics after a while for such combinations. So far the above 11-CURRENT kernel+world combination seems okay despite the boot sequence having a 10.1-RELEASE-p5 kernel variant involved for a bit.) > > $ freebsd-version -ku; uname -a > 10.1-RELEASE-p5 > 11.0-CURRENT > FreeBSD FBSDG5M1 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r277990M: Sat Jan 31 18:27:29 PST 2015 root@FBSDG5M1:/usr/obj/usr/home/markmi/src_11_current/sys/GENERIC64vtsc powerpc > > > > Other details controlling how things were built (all 3 are built similarly): > > $ more /etc/make.conf > WRKDIRPREFIX=/usr/obj/portswork > WITH_DEBUG= > MALLOC_PRODUCTION= > > $ more /etc/src.conf > #WITH_DEBUG_FILES= > #WITHOUT_CLANG= > > (I have separate svn source directory trees for 10.1-RELEASE-p5, 10.1-STABLE (-r277808), and 11.0-CURRENT (-r277990).) > > $ more ~markmi/src_11_current/sys/powerpc/conf/GENERIC64vtsc > include GENERIC64 > ident GENERIC64vtsc > > nooptions PS3 #Sony Playstation 3 HACK!!! to allow sc > > options DDB # HACK!!! to dump early crash info (but 11.0-CURRENT already has it) > options GDB # HACK!!! ... > #options KTR > #options KTR_MASK=KTR_TRAP > #options KTR_CPUMASK=0xF > #options KTR_VERBOSE > > # HACK!!! to allow sc for 2560x1440 display on Radeon X1950 that vt historically mishandled during booting > device sc > #device kbdmux # HACK: already listed by vt > options SC_OFWFB # OFW frame buffer > options SC_DFLT_FONT # compile font in > makeoptions SC_DFLT_FONT=cp437 > > > # Disable extra checking typically used for FreeBSD 11.0-CURRENT: > nooptions DEADLKRES #Enable the deadlock resolver > nooptions INVARIANTS #Enable calls of extra sanity checking > nooptions INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS > nooptions WITNESS #Enable checks to detect deadlocks and cycles > nooptions WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed > nooptions MALLOC_DEBUG_MAXZONES # Separate malloc(9) zones > > (My 10.1-RELEASE-p5 and 10.1-STABLE variants use the same file contents as above.) > > $ svnlite status ~markmi/src_11_current/ > M /home/markmi/src_11_current/sys/ddb/db_main.c > M /home/markmi/src_11_current/sys/ddb/db_script.c > ? /home/markmi/src_11_current/sys/powerpc/conf/GENERIC64vtsc > M /home/markmi/src_11_current/sys/powerpc/ofw/ofw_machdep.c > M /home/markmi/src_11_current/sys/powerpc/ofw/ofwcall64.S > M /home/markmi/src_11_current/sys/powerpc/powermac/powermac_thermal.c > > $ svnlite info ~markmi/src_11_current/ > Path: /home/markmi/src_11_current > Working Copy Root Path: /home/markmi/src_11_current > URL: https://svn0.us-west.freebsd.org/base/head > Relative URL: ^/head > Repository Root: https://svn0.us-west.freebsd.org/base > Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f > Revision: 277990 > Node Kind: directory > Schedule: normal > Last Changed Author: nwhitehorn > Last Changed Rev: 277990 > Last Changed Date: 2015-01-31 11:16:51 -0800 (Sat, 31 Jan 2015) > > === > Mark Millard > markmi at dsl-only.net > > _______________________________________________ > freebsd-ppc@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-ppc > To unsubscribe, send any mail to "freebsd-ppc-unsubscribe@freebsd.org" >help
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