Messages in this thread | | | Date | Wed, 24 Sep 2008 21:38:51 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 1/2] VMware detection support for x86 and x86-64 |
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Alok kataria wrote: > > 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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