Re: [gentoo-hardened] erlang fails to install on kvm guest (illegal instruction)

[Yannis Kontekakis]

On 11/20/2012 05:34 PM, Alexander Tsoy wrote:
> В Tue, 20 Nov 2012 16:54:39 +0200
> Yannis Kontekakis<tolis@×××××××××××.gr>  пишет:
>
>> Hello,
>>
>> I am trying to install erlang on a hardened amd64 gentoo system running
>> on a kvm guest. The use flags and version of erlang are the following:
>>
>> dev-lang/erlang-15.2  USE="hipe java kpoll odbc smp ssl -compat-ethread
>> -doc -emacs -halfword -sctp -tk -wxwidgets"
>>
>> my CFLAGS are:
>> CFLAGS="-march=core2 -O2 -pipe"
>> CXXFLAGS="${CFLAGS}"
>>
>> cat /proc/cpuinfo reports 4 cores of:
>>
>> processor    : 3
>> vendor_id    : AuthenticAMD
>> cpu family    : 6
>> model        : 2
>> model name    : QEMU Virtual CPU version 1.0
>> stepping    : 3
>> microcode    : 0x1000065
>> cpu MHz        : 2100.278
>> cache size    : 512 KB
>> fpu        : yes
>> fpu_exception    : yes
>> cpuid level    : 4
>> wp        : yes
>> flags        : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
>> pat pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 popcnt
>> hypervisor lahf_lm svm abm sse4a
>> bogomips    : 4200.55
>> TLB size    : 1024 4K pages
>> clflush size    : 64
>> cache_alignment    : 64
>> address sizes    : 40 bits physical, 48 bits virtual
>> power management:
>>
>> the error message that emerge prints while dying:
>>
>> === Entering application hipe
>> make[3]: Entering directory
>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/rtl'
>> (cd ../main&&  make hipe.hrl)
>> make[4]: Entering directory
>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/main'
>> sed -e "s;%VSN%;3.9;" ../../hipe/main/hipe.hrl.src>
>> ../../hipe/main/hipe.hrl
>> make[4]: Leaving directory
>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/main'
>> erlc -W  +debug_info +inline -o../ebin hipe_rtl.erl
>> make[3]: *** [../ebin/hipe_rtl.beam] Illegal instruction
>> make[3]: Leaving directory
>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe/rtl'
>> make[2]: *** [opt] Error 2
>> make[2]: Leaving directory
>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib/hipe'
>> make[1]: *** [opt] Error 2
>> make[1]: Leaving directory
>> `/var/tmp/portage/dev-lang/erlang-15.2/work/otp_src_R15B/lib'
>> make: *** [secondary_bootstrap_build] Error 2
>> emake failed
>>    * ERROR: dev-lang/erlang-15.2 failed (compile phase):
>>    *   (no error message)
>>    *
>>    * Call stack:
>>    *     ebuild.sh, line  93:  Called src_compile
>>    *   environment, line 3965:  Called die
>>    * The specific snippet of code:
>>    *       emake -j1 || die;
>>    *
>>
>> And finally, dmesg reports:
>> beam.smp[27752] trap invalid opcode ip:54b49c00c4 sp:3d9f459d3f0 error:0
>> in beam.smp[54b48e4000+261000]
>>
>> Emerging erlang on my desktop(a similar hardened gentoo setup) completes
>> successfully. The only thing I can think of is that something is wrong
>> with my CFLAGS(but this is just an assumption).
>>
>> Any help would be appreciated
>>
>> Regards,
>>
>> Yannis
>>
> It seems that KVM host is and AMD-based system. I suggest you to drop
> "-march=core2" from CFLAGS. Or if you do not plan to migrate this VM
> you can also try to replace it with something like "-march=amdfam10
> -mno-3dnow". :)
>

I thought so... I now have to rebuild the whole world :) Is anyone aware 
of an -march value that can be used interchangeably between 64bit intel 
& amd cpus? The kvm host is not under my administration, so at any time 
my guest could be switched between hosts.