[asterisk-bugs] [JIRA] (ASTERISK-20128) Virtualized asterisk.org 1.8.14.0 no longer runs in a KVM virtualized environment. Compiles without error, but fails with Illegal instruction on launch Regression since 1.8.13.0 Last good 1.8.12.2

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-20128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=201294#comment-201294 ] 

Matt Jordan commented on ASTERISK-20128:
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That isn't behavior any one else has reported. So far, people who have run into this issue have been able to build successfully by specifying the correct CPU architecture in {{CFLAGS}} and not building native. This, in effect, is what the patch reverted - except that we no longer attempt to guess the values for you (as we would usually guess wrong).

It sounds like not all modules were compiled in the correct fashion, so that some modules were not loaded.

Either way, as I said previously on this issue, no one has identified a good solution to being able to build Asterisk reliably for virtualized CPUs. If someone would like to propose a good patch to be able to accomplish this, that would be much appreciated.
                
> Virtualized asterisk.org 1.8.14.0  no longer runs in a KVM virtualized environment.     Compiles without error,  but fails with Illegal instruction on launch  Regression since 1.8.13.0     Last good 1.8.12.2  
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-20128
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20128
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: .Release/Targets
>    Affects Versions: 1.8.13.0, 1.8.14.0
>         Environment: verified on Centos 6.2 and 6.3 - 64 bit
> running in KVM virtualized instances with the following  /proc/cpuinfo 
> processor	: 0
> vendor_id	: AuthenticAMD
> cpu family	: 6
> model		: 2
> model name	: QEMU Virtual CPU version 0.15.1
> stepping	: 3
> cpu MHz		: 1497.505
> cache size	: 512 KB
> fpu		: yes
> fpu_exception	: yes
> cpuid level	: 4
> wp		: yes
> flags		: fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx lm up unfair_spinlock pni cx16 popcnt hypervisor lahf_lm svm abm sse4a
> bogomips	: 2995.01
> TLB size	: 1024 4K pages
> clflush size	: 64
> cache_alignment	: 64
> address sizes	: 40 bits physical, 48 bits virtual
> power management:
>            Reporter: linux ninja1
>            Assignee: Kinsey Moore
>         Attachments: cat-proc-cpuinfo-with-different-settings.txt, console-logfile.txt, cpu-flags-defaultKVM-forcedKVM-baremetal.txt, KVM-Virt-Manager-defaults.png, KVM-Virt-Manager-forced-CPU.png
>
>
> We are running asterisk 1.8.X instances in virtual machines.
> The asterisk virtual machines are running Centos 6.2 and 6.3.
> Kernel of virtual machines is :  2.6.32-279.1.1.el6.x86_64 #1 SMP Tue Jul 10 13:47:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> KVM Hypervisor / host is a Fedora 16 with the latest kernel :  3.4.4-4.fc16.x86_64 #1 SMP Thu Jul 5 20:01:38 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> Hardware is HP ProLiant N40L  MicroServer 
> Any asterisk version higher than 1.8.12.2 fails with a "illegal instruction" on launch of asterisk.

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