On 07/12/2017 08:06 PM, Michael Brown wrote: > On 12/07/17 19:03, Heinrich Schuchardt wrote: >>> That patch seems to completely negate the purpose of the existing >>> efi_locate_device() function. What is it that you are trying to >>> achieve? >> >> My understanding is that efi_locate_device is called with the system >> handle from drivers/net/efi/snponly.c:82 to find the device that >> supports the Simple Network Protocol. > > Not quite. It's supposed to find the closest SNP-supporting parent of > the specified device. The idea is not just to find any SNP, but to find > the SNP from which iPXE itself was loaded. This makes a difference if > the system has more than one SNP device.
But iPXE is not loaded via SNP but from a block device. Why do you expect to find any parent supporting SNP? The UEFI spec does not require that on the path from a block device to the root of the device tree there is any SNP supporting device. How will iPXE find any SNP supporting device if the only SNP device is a leaf node and not parent to anything? Best regards Heinrich _______________________________________________ ipxe-devel mailing list [email protected] https://lists.ipxe.org/mailman/listinfo.cgi/ipxe-devel
