[Bugme-new] [Bug 16636] New: The boot process freezes and needs keyboard input to continue - Bisected to Commit 988888c, bootup hangs

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Thu Aug 19 17:22:27 PDT 2010


https://bugzilla.kernel.org/show_bug.cgi?id=16636

           Summary: The boot process freezes and needs keyboard input to
                    continue - Bisected to Commit 988888c, bootup hangs
           Product: Platform Specific/Hardware
           Version: 2.5
    Kernel Version: 2.6.36-rc1
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: x86-64
        AssignedTo: platform_x86_64 at kernel-bugs.osdl.org
        ReportedBy: Larry.Finger at lwfinger.net
        Regression: Yes


My x86_64 system with an AMD Turion 64 X2 TL-60 CPU pauses/freezes as soon as
the kernel is loaded during boot. It will only proceed if some key is pressed
and stops many times. I have never stayed with it, thus it may run OK once
booted.

The problem was bisected to:

commit 9d8888c2a214aece2494a49e699a097c2ba9498b
Author: Hans Rosenfeld <hans.rosenfeld at amd.com>
Date:   Wed Jul 28 19:09:31 2010 +0200

    x86, cpu: Clean up AMD erratum 400 workaround

    Remove check_c1e_idle() and use the new AMD errata checking framework
    instead.

    Signed-off-by: Hans Rosenfeld <hans.rosenfeld at amd.com>
    LKML-Reference: <1280336972-865982-2-git-send-email-hans.rosenfeld at amd.com>
    Signed-off-by: H. Peter Anvin <hpa at linux.intel.com>

----- /proc/cpuinfo -----
  processor     : 0
  vendor_id     : AuthenticAMD
  cpu family    : 15
  model         : 104
  model name    : AMD Turion(tm) 64 X2 TL-60
  stepping      : 2
  cpu MHz               : 2000.000
  cache size    : 512 KB
  physical id   : 0
  siblings      : 2
  core id               : 0
  cpu cores     : 2
  apicid                : 0
  initial apicid        : 0
  fpu           : yes
  fpu_exception : yes
  cpuid level   : 1
  wp            : yes
  flags         : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm
3dnowext 3dnow rep_good extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic
cr8_legacy 3dnowprefetch lbrv
  bogomips      : 4000.93
  TLB size      : 1024 4K pages
  clflush size  : 64
  cache_alignment       : 64
  address sizes : 40 bits physical, 48 bits virtual
  power management: ts fid vid ttp tm stc 100mhzsteps

CPU #1 is the same.

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