From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Lieven <pl@dlhnet.de>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>, Avi Kivity <avi@redhat.com>,
Gleb Natapov <gleb@redhat.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] memtest 4.20+ does not work with -cpu host
Date: Thu, 13 Sep 2012 09:55:06 +0200 [thread overview]
Message-ID: <5051915A.2050405@redhat.com> (raw)
In-Reply-To: <505190E5.9080008@dlhnet.de>
Il 13/09/2012 09:53, Peter Lieven ha scritto:
>>>>
>>> rdmsr returns it cannot read those MSRs. regardless if I use -cpu host
>>> or -cpu qemu64.
>> On the host.
>>
>>
> did you get my output?
>
> #rdmsr -0 0x194
> 0000000000011100
> #rdmsr -0 0xce
> 00000c0004011103
Yes, that can help implementing it in KVM. But without a spec to
understand what the bits actually mean, it's just as risky...
Peter, do you have any idea where to get the spec of the memory
controller MSRs in Nehalem and newer processors? Apparently, memtest is
using them (and in particular 0x194) to find the speed of the FSB, or
something like that.
Paolo
next prev parent reply other threads:[~2012-09-13 7:55 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 15:06 [Qemu-devel] memtest 4.20+ does not work with -cpu host Peter Lieven
2012-09-06 14:58 ` Avi Kivity
2012-09-10 11:06 ` Peter Lieven
2012-09-10 11:29 ` Paolo Bonzini
2012-09-10 11:47 ` Peter Lieven
2012-09-10 11:52 ` Peter Lieven
2012-09-10 12:15 ` Paolo Bonzini
2012-09-10 12:21 ` Gleb Natapov
2012-09-10 12:29 ` Peter Lieven
2012-09-10 12:32 ` Avi Kivity
2012-09-10 12:38 ` Peter Lieven
2012-09-13 7:53 ` Peter Lieven
2012-09-13 7:55 ` Paolo Bonzini [this message]
2012-09-13 7:57 ` Gleb Natapov
2012-09-13 8:00 ` Paolo Bonzini
2012-09-13 8:05 ` Gleb Natapov
2012-09-13 12:05 ` Peter Lieven
2012-09-13 12:42 ` Gleb Natapov
2012-09-13 12:56 ` Peter Lieven
2012-09-13 13:43 ` Gleb Natapov
2012-09-10 12:12 ` Avi Kivity
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