search for: cpl1

...hen restoring the guest state. This may require the guest to save + the segment register value before issuing a hypervisor API call + which will update the descriptor table.* + + Because the hypervisor must protect its own memory space from + privileged code running in the guest at CPL1-2, descriptors may not + provide access to the 64 megabyte region of high linear space. To + achieve this, the hypervisor will truncate descriptors in the + descriptor tables. This means that attempts by the guest to access + through negative offsets to the segment base will fault...

...hen restoring the guest state. This may require the guest to save + the segment register value before issuing a hypervisor API call + which will update the descriptor table.* + + Because the hypervisor must protect its own memory space from + privileged code running in the guest at CPL1-2, descriptors may not + provide access to the 64 megabyte region of high linear space. To + achieve this, the hypervisor will truncate descriptors in the + descriptor tables. This means that attempts by the guest to access + through negative offsets to the segment base will fault...