[Bugme-new] [Bug 11427] New: AMD systems with c1e enabled freeze without "nolapic_timer" option

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=11427

           Summary: AMD systems with c1e enabled freeze without
                    "nolapic_timer" option
           Product: Timers
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Fedora
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: johnstul at us.ibm.com
        ReportedBy: cebbert at redhat.com


Latest working kernel version:
2.6.25.11

Earliest failing kernel version:
2.6.26.3

Distribution:
Fedora 8

Hardware Environment:
Acer Aspire 5102
AMD RS480 chipset, Turion dual-core CPU

Software Environment:
x86 kernel compiled for i686 32-bit CPU

Problem Description:
Local APIC timer does not get disabled because it is set up and marked
operational before c1e gets detected on the second CPU. You can sometimes make
progress by pressing keys but the system can get stuck in __do_softirq() and
must be powered off manually.

In 2.6.25.11, c1e gets detected before the timers are set up.

Adding "nolapic_timer" option fixes it.


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