VirtualBox

Changes between Initial Version and Version 1 of Ticket #9756, comment 1


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Timestamp:
09/03/12 18:43:18 (20 months ago)
Author:
rschmied
Comment:

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  • Ticket #9756, comment 1

    initial v1  
    66}}} 
    77 
    8 The kernel obviously uses some mechanism to realize it's running on virtualized h/w and pulls some additional info thru some hypervisor API 
     8The kernel obviously uses some mechanism to realize it's running on virtualized h/w and pulls some additional info thru some hypervisor API. 
     9 
     10[https://lkml.org/lkml/2008/10/20/469 Here's a link] to the relevant post on LKML, it's quite date and VirtualBox could use the same / similar mechanism as the original poster mentioned: "This patch also adds a hypervisor_get_tsc_freq function, instead of 
     11calibrating the frequency which can be error prone in virtualized 
     12environment, we ask the hypervisor for it. We get the frequency from 
     13the hypervisor by accessing the backdoor port if we are running on VMware. 
     14'''Other hypervisors too can add code to get frequency on their platform 
     15to this routine.''' " 

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