Re: [PATCH 1/2] VMware detection support for x86 and x86-64 | KernelTrap

Re: [PATCH 1/2] VMware detection support for x86 and x86-64

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From: H. Peter Anvin

Subject: Re: [PATCH 1/2] VMware detection support for x86 and x86-64

Date: Wednesday, September 24, 2008 - 9:38 pm

Alok kataria wrote:
quoted text> 
> Even if there is anything on that port on native hardware it would
> work perfectly well and is _safe_.
> First let me post the code to access this backdoor port (the way it
> should really be done )
> 
> So whenever we query port  0x5658 , with the GETVERSION command (which
> is the first thing we do with this port), we expect that  eax !=
> 0xFFFFFFFF   and ebx has a  VMWARE specific MAGIC value.  Please note
> that ebx has been initialized to zero in the code above.
> 

You have no idea what you just did to a real piece of hardware.

	-hpa
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Messages in current thread:

[PATCH] X86: remove WARN_ON if MTRRs are all blank, Joerg Roedel, (Thu Feb 21, 4:32 am)

Re: [PATCH] X86: remove WARN_ON if MTRRs are all blank, Ingo Molnar, (Thu Feb 21, 4:54 am)

Re: [PATCH] X86: remove WARN_ON if MTRRs are all blank, Joerg Roedel, (Thu Feb 21, 5:47 am)

Re: [PATCH] X86: remove WARN_ON if MTRRs are all blank, Ingo Molnar, (Thu Feb 21, 6:03 am)

Re: [PATCH] X86: remove WARN_ON if MTRRs are all blank, Joerg Roedel, (Thu Feb 21, 6:27 am)

[PATCH 1/2] VMware detection support for x86 and x86-64, Yan Li, (Sun Sep 7, 4:45 pm)

[PATCH 2/2] avoid mtrr warning message when running as VMw ..., Yan Li, (Sun Sep 7, 4:47 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, David Dillow, (Sun Sep 7, 5:36 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Yan Li, (Sun Sep 7, 6:49 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Ingo Molnar, (Mon Sep 8, 7:04 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Yan Li, (Mon Sep 8, 5:20 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Mon Sep 8, 5:34 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Yan Li, (Tue Sep 9, 5:28 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Tue Sep 9, 1:12 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Yan Li, (Tue Sep 16, 6:32 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Ingo Molnar, (Wed Sep 17, 3:52 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Yan Li, (Wed Sep 17, 7:03 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Ingo Molnar, (Wed Sep 17, 7:10 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Wed Sep 17, 8:38 am)

[PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 5:22 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Cristi Magherusan, (Wed Sep 24, 7:10 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 7:23 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 9:19 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Alok kataria, (Wed Sep 24, 9:19 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 9:21 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Cristi Magherusan, (Wed Sep 24, 11:13 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 11:16 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 5:15 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 5:19 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 5:23 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 5:26 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 5:32 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 5:37 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Bernd Eckenfels, (Wed Sep 24, 6:28 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Greg KH, (Wed Sep 24, 7:23 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Alok kataria, (Wed Sep 24, 7:28 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 7:34 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 7:47 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 7:48 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Greg KH, (Wed Sep 24, 7:55 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Wed Sep 24, 8:29 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 9:38 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Alok Kataria, (Wed Sep 24, 9:46 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 9:54 pm)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 9:54 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Alok Kataria, (Wed Sep 24, 10:02 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 10:04 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Alok Kataria, (Wed Sep 24, 10:23 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Wed Sep 24, 10:30 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Alan Cox, (Thu Sep 25, 1:45 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, David Sanders, (Thu Sep 25, 2:56 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Thu Sep 25, 3:23 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Greg KH, (Thu Sep 25, 5:56 am)

Re: [PATCH 1/2] VMware guest detection for x86 and x86-64, Yan Li, (Thu Sep 25, 7:38 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Zachary Amsden, (Thu Sep 25, 1:48 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Thu Sep 25, 2:59 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, David Sanders, (Thu Sep 25, 3:17 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Zachary Amsden, (Thu Sep 25, 3:20 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Thu Sep 25, 3:27 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Valdis.Kletnieks, (Fri Sep 26, 5:27 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Gerd Hoffmann, (Fri Sep 26, 5:47 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Valdis.Kletnieks, (Fri Sep 26, 6:22 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, H. Peter Anvin, (Fri Sep 26, 10:37 am)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Zachary Amsden, (Fri Sep 26, 1:35 pm)

Re: [PATCH 1/2] VMware detection support for x86 and x86-64, Pavel Machek, (Fri Oct 3, 7:12 am)