On 04.09.2020 15:52, Andrew Cooper wrote:
> The comments in save_segments(), _toggle_guest_pt() and write_cr() are false.
> The %fs and %gs bases can be updated at any time by the guest.
>
> As a consequence, Xen's fs_base/etc tracking state is always stale when the
> vcpu is in context, and must
The comments in save_segments(), _toggle_guest_pt() and write_cr() are false.
The %fs and %gs bases can be updated at any time by the guest.
As a consequence, Xen's fs_base/etc tracking state is always stale when the
vcpu is in context, and must not be used to complete MSR_{FS,GS}_BASE reads,
etc
