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1b41735f48
'struct nept_desc' is used to associate guest EPTP with a shadow EPTP. It's created in the first reference and be freed while no reference. The life cycle seems like, While guest VMCS VMX_EPT_POINTER_FULL is changed, the 'struct nept_desc' of the new guest EPTP is referenced; the 'struct nept_desc' of the old guest EPTP is dereferenced. While guest VMCS be cleared(by VMCLEAR in L1 VM), the 'struct nept_desc' of the old guest EPTP is dereferenced. While a new guest VMCS be loaded(by VMPTRLD in L1 VM), the 'struct nept_desc' of the new guest EPTP is referenced. The 'struct nept_desc' of the old guest EPTP is dereferenced. Tracked-On: #5923 Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com> Signed-off-by: Zide Chen <zide.chen@intel.com> Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com> Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>