Date: Thu, 10 May 2012 11:20:24 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Alfred Bartsch <bartsch@dssgmbh.de> Cc: freebsd-stable@FreeBSD.org Subject: Re: FreeBSD 8 i386 gptboot corrupt - SOLVED Message-ID: <4FAB7A48.4070502@FreeBSD.org> In-Reply-To: <4FAB7500.7020204@dssgmbh.de> References: <4FAA3912.3030801@dssgmbh.de> <4FAA4A11.808@FreeBSD.org> <4FAA5E70.7030508@dssgmbh.de> <4FAA83BD.2030204@FreeBSD.org> <4FAB6A7B.9050500@dssgmbh.de> <4FAB6BE7.9060500@FreeBSD.org> <4FAB7500.7020204@dssgmbh.de>
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on 10/05/2012 10:57 Alfred Bartsch said the following: > Am 10.05.2012 09:19, schrieb Andriy Gapon: >> on 10/05/2012 10:12 Alfred Bartsch said the following: >>> I got this stupid idea of a "16k limit" during testing. It was >>> unobvious to me that the build process in a standard environment (i386) >>> simply produces invalid code. In i386 (32-bit) hardware, we don't use >>> zfs at all, so I can't tell anything about gptzfsboot. For now, >>> modifying /sys/boot/i386/gptboot/Makefile completely solves this actual >>> build problem. >>> >>> IMHO the compiler should always know perfectly well in which hardware >>> environment it runs and for which target environment it produces code. >>> So the build environment should be modified to fix this. I would >>> certainly give it a try, but unfortunately this is far beyond my >>> knowledge. :-( > >> That's an interesting theory. What kind of hardware do you have? Is it >> something non-mainstream or sufficiently old? As far as I can tell, our >> base GCC uses i686 target arch if none is explicitly requested. > > > Our i386 hardware is sufficiently old, and IMHO mainstream, e.g.: Intel > SR1325 with Pentium-4 CPU, 2GB RAM Intel SR2200 with Pentium-III CPU(s), > 2/4 GB RAM, Intel SR2300 with dual XEON, 4 GB RAM > > Even on my desktop (Intel MB DQ965CO, Intel Core2 CPU), this (wrong) > behavior can be reproduced. dmesg output: > > FreeBSD 8.3-STABLE #0: Tue May 8 16:15:10 CEST 2012 > root@pcadmin.incore:/usr/obj/usr/src/sys/PCADMIN i386 Timecounter "i8254" > frequency 1193182 Hz quality 0 CPU: Intel(R) Core(TM)2 CPU 6400 @ > 2.13GHz (2141.96-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x6f6 > Family = 6 Model = f Stepping = 6 > > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > > Features2=0xe3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM> > AMD Features=0x20100000<NX,LM> AMD Features2=0x1<LAHF> TSC: P-state > invariant > > If you do need more information, let me know. This is not too old, indeed. I'd say relatively modern :-) You said that in some cases you were getting BTX error messages. Could you please get a screen capture of that (e.g. with a digital camera)? -- Andriy Gapon
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