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* kvm hangs w/o nolapic
@ 2009-11-20 11:11 Johannes Berg
  2009-11-20 18:18 ` Cyrill Gorcunov
  0 siblings, 1 reply; 6+ messages in thread
From: Johannes Berg @ 2009-11-20 11:11 UTC (permalink / raw)
  To: linux-kernel
  Cc: Avi Kivity, Marcelo Tosatti, kvm, Cyrill Gorcunov, Suresh Siddha,
	Yinghai Lu, Ingo Molnar

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My 2.6.32-rc7 kvm (both guest+host, x86_64) hangs w/o "nolapic" here:

  while (lapic_cal_loops <= LAPIC_CAL_LOOPS)
     cpu_relax();

because lapic_cal_loops never changes from -1.

Code was last changed by
commit 2f04fa888d270951b9e0fe9e641ddd560d77ad1b
Author: Yinghai Lu <yhlu.kernel@gmail.com>
Date:   Sun Aug 24 02:01:54 2008 -0700

    x86: apic copy calibrate_APIC_clock to each other in apic_32/64.c

but I haven't tested reverting that.

johannes

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^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2009-11-23 23:57 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-11-20 11:11 kvm hangs w/o nolapic Johannes Berg
2009-11-20 18:18 ` Cyrill Gorcunov
2009-11-20 21:25   ` Johannes Berg
2009-11-22 20:44     ` Cyrill Gorcunov
2009-11-23 19:05     ` Marcelo Tosatti
2009-11-23 23:57       ` Johannes Berg

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