From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) Description of problem: On generic (non-numaq) systems with 8 physical P4s (16 logical), AS 2.1 kernel panic()s during boot, complaining about "Max APIC ID exceeded!". The system has 16 - logical processors and 4 IO-APICs. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1.Try booting AS 2.1 kernel on this system, the system panic()s 2.Also tried running AS 2.1 summit kernel on this system. That too fails at the same stage. 3. Actual Results: panic() Expected Results: normal boot of the system. Additional info:
Created attachment 89982 [details] Patch to support generic (non-numaq) > 8 CPU system, with summit kernel
A simple patch on AS 2.1 summit kernel boots up the above system. With this patch summit kernel can be used to support such systems. The patch on top of AS 2.1 summit tree is attached.
Red Hat Linux AS2.1 does not support more than 8 CPU's.
If this is a request for future products to support more than 8 CPUs, please work with Keve Gabbert to submit through proper channels.