Project Home
Project Home		 Wiki
Wiki		 Discussion Forums
Discussions		 Project Information
Project Info
QNX RTOS v4 [EOL]/Discussion/General/Proc32 Updates/List of Posts
Forum Topic - Proc32 Updates: (6 Items)
   
Update
Paul Graham
09/30/2020 12:04 PM
post120974
Proc32 Updates   
Hi All

Recently I am investigating some issues on our system with QNX where processes randomly crash supposedly with SIGSEGV 
issues.  

I have been looking around and came across an update to Proc32 on this site.  The description in its read me states that
 the change is in place to work around 386 memory protections issues on more modern boards.

I am wondering if anyone could shed some more light on this change as to how issues manifested etc.

Thanks

Paul
Oleg Bolshakov
09/30/2020 3:24 PM
post120976
Re: Proc32 Updates   
Hi Paul,

What Proc32 version do you ask about? What version of Proc32 do you use?

Respectfully,
Oleg

> Hi All
> 
> Recently I am investigating some issues on our system with QNX where processes
>  randomly crash supposedly with SIGSEGV issues.  
> 
> I have been looking around and came across an update to Proc32 on this site.  
> The description in its read me states that the change is in place to work 
> around 386 memory protections issues on more modern boards.
> 
> I am wondering if anyone could shed some more light on this change as to how 
> issues manifested etc.
> 
> Thanks
> 
> Paul
Paul Graham
10/01/2020 6:19 AM
post120987
Re: Proc32 Updates   
Currently we use 4.25Q and the version in the foundry27 archives with regard to the -E0 issue is 4.25R
Paul Graham
10/01/2020 6:20 AM
post120988
Re: Proc32 Updates   
The readme file for 4.25R is not very clear.  it just states modern boards.  Currently we use Ampro CM420 boards from 
around 2005 with CompactFlash storage.
Oleg Bolshakov
10/01/2020 6:58 AM
post120989
Re: Proc32 Updates   
Hi Paul,

The readme says about -E0 option of Proc32 only. This is workaround for internal QNX kernel PCI handler (alternate code 
for BIOS PCI functions calls). The issue with PCI handler occurs at the very beginning of OS booting (i.g., when Fsys.* 
driver starts). So the QNX can't launch at all. If you can launch QNX on Ampro CM420 without -E0 then you do not have 
this PCI issue. -E0 option doesn't affect any other aspects of memory usage.

Respectfully,
Oleg

> The readme file for 4.25R is not very clear.  it just states modern boards.  
> Currently we use Ampro CM420 boards from around 2005 with CompactFlash storage
> .
Paul Graham
10/01/2020 7:13 AM
post120990
Re: Proc32 Updates   
HI Oleg

Thanks for the information.  Yeah ours fails  usually couple of days into execution so not this.  

Thanks again

Paul

Return


  A subsidiary of BlackBerry             All content ©2004-2013, QNX Software Systems