On Tue, Oct 02, 2018 at 09:31:17PM +1000, Paul Mackerras wrote: > This adds a new hypercall, H_ENTER_NESTED, which is used by a nested > hypervisor to enter one of its nested guests. The hypercall supplies > register values in two structs. Those values are copied by the level 0 > (L0) hypervisor (the one which is running in hypervisor mode) into the > vcpu struct of the L1 guest, and then the guest is run until an > interrupt or error occurs which needs to be reported to L1 via the > hypercall return value. > > Currently this assumes that the L0 and L1 hypervisors are the same > endianness, and the structs passed as arguments are in native > endianness. If they are of different endianness, the version number > check will fail and the hcall will be rejected. > > Nested hypervisors do not support indep_threads_mode=N, so this adds > code to print a warning message if the administrator has set > indep_threads_mode=N, and treat it as Y. > > Signed-off-by: Paul Mackerras <paulus@xxxxxxxxxx> Reviewed-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx> -- David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson
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