Bug#670398: linux-image-2.6.32-5-amd64: SSH logins hang while hpet interrupts multiply on Intel Nehalem CPUs

2012-04-25 Thread John Stultz
On 04/25/2012 08:49 PM, Ben Hutchings wrote: On Wed, 2012-04-25 at 10:36 +0200, Sven Hoexter wrote: Package: linux-image-2.6.32-5-amd64 Version: 2.6.32-41squeeze2 Severity: important Hi, since about December 2011 we've seen systems were SSH sessions suddenly hang and further logins on the

Bug#647095: CPU hyperthreading turned on after soft power-cycle

2011-11-29 Thread John Stultz
On Tue, 2011-11-29 at 13:26 +0100, Clarinet wrote: Using an older known-good kernel, could you build and run the test case at the end of Documentation/rtc.txt a few times and see if it triggers the same problem? I'm suspicious that the setting the alarm is whats tripping the BIOS into

Bug#647095: CPU hyperthreading turned on after soft power-cycle

2011-11-28 Thread John Stultz
On Mon, 2011-11-21 at 22:31 +0100, Jiri Polach wrote: diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index cb9a104..77b5273 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -640,7 +640,7 @@ config HPET_TIMER Choose N to continue using the legacy 8254 timer. config

Bug#647095: CPU hyperthreading turned on after soft power-cycle

2011-11-21 Thread John Stultz
able to bisect without skipping. The result is surprising (at least for me) - believe it or not, the first bad commit is 6610e089 RTC: Rework RTC code to use timerqueue for events from John Stultz (I am sending him a copy of this message). I would never expect this would be a problem, but my

Bug#647095: CPU hyperthreading turned on after soft power-cycle

2011-11-17 Thread John Stultz
: Rework RTC code to use timerqueue for events from John Stultz (I am sending him a copy of this message). I would never expect this would be a problem, but my understanding of this commit is very limited, so I am certainly missing the point. However, I have tried to compile 2.6.38 (which

Bug#647095: CPU hyperthreading turned on after soft power-cycle

2011-11-17 Thread John Stultz
On Fri, 2011-11-18 at 00:42 +0100, Jiri Polach wrote: On 11/17/2011 9:32 PM, John Stultz wrote: On Wed, 2011-11-16 at 23:49 +0100, Clarinet wrote: Hi all, Result of bisecting: v2.6.38-rc1 exhibits the problem. v2.6.37 and many of the topic branches merged in the 2.6.38 merge window work