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George Dunlap
0d19d3aab0
In order to make implementation and testing tractable, we will require specific host functionality. Add a nested_virt bit to hvm_funcs.caps, and return an error if a domain is created with nested virt and this bit isn't set. Create VMX and SVM callbacks to be executed from nestedhvm_setup(), which is guaranteed to execute after all command-line options have been procesed. For VMX, start with always enabling it if HAP is present; this shouldn't change current behvior. For SVM, require some basic functionality, adding a document explaining the rationale. NB that only SVM CPUID bits 0-7 have been considered. Bits 10-16 may be considered in a follow-up patch. Signed-off-by: George Dunlap <george.dunlap@cloud.com> Acked-by: Jan Beulich <jbeulich@suse.com>
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