> -----Original Message----- > From: kvm-owner@xxxxxxxxxxxxxxx [mailto:kvm-owner@xxxxxxxxxxxxxxx] On > Behalf Of Peter Wu > Sent: Sunday, March 23, 2014 6:00 AM > To: Gleb Natapov > Cc: Venkatesh Srinivas; Peter Zijlstra; Ingo Molnar; Andi Kleen; Linux Kernel > Developers List; H. Peter Anvin; kvm@xxxxxxxxxxxxxxx; Paolo Bonzini > Subject: Re: GPF in intel_pmu_lbr_reset() with qemu -cpu host > > On Saturday 22 March 2014 14:27:59 Gleb Natapov wrote: > > > but now I have a NULL dereference (in rapl_pmu_init). Previously, when > > > `-cpu SandyBridge` was passed to qemu, it would show this: > > > > > > [ 0.016995] Performance Events: unsupported p6 CPU model 42 > no PMU driver, software events only. > > > > > > The same NULL pointer deref would be visible (slightly different > > > addresses, but the Code lines are equal). With `-host`, the NULL deref > > > with `-cpu host` contains: > > > > > > [ 0.016445] Performance Events: 16-deep LBR, IvyBridge events, > Intel PMU driver. > > > > > > Full dmesg below. > > > > > I am confused. Do you see crash now with -cpu SandyBridge and -cpu host, or > -cpu host only? > > The RAPL crash is seen with both SandyBridge and host, I mentioned SB > because that environment should be more constant than "host" (which > depends on the CPU you have on, well, the host). > > Peter Is there a solution for this issue right now? I also met this GPF crash. > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html Thanks, Feng -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
