Philippe Bergheaud <fe...@linux.ibm.com> writes: > Skiboot used to set the default Tunnel BAR register value when capi mode > was enabled. This approach was ok for the cxl driver, but prevented other > drivers from choosing different values. > > Skiboot versions > 5.11 will not set the default value any longer. This > patch modifies the cxl driver to set/reset the Tunnel BAR register when > entering/exiting the cxl mode, with pnv_pci_set_tunnel_bar(). > > That should work with old skiboot (since we are re-writing the value > already set) and new skiboot.
But doesn't that mean new skiboot can't boot any old kernel? That seems undesirable. cheers
