On 08/09/2013 08:38 AM, H. Peter Anvin wrote: > On 08/09/2013 08:32 AM, James Bottomley wrote: >> On Fri, 2013-08-09 at 08:23 -0700, H. Peter Anvin wrote: >>> I would like to change the defaults for CONFIG_EFI and CONFIG_EFI_STUB >>> to y. There is little reason to omit this since EFI now is a >>> significant percentage of all systems. >> >> You didn't actually attach the patch, but I presume this is for 64 bit >> compiles on x86 only? We still have significant problems getting 64 bit >> EFI to interact with 32 bit kernels, so I don't believe we should enable >> CONFIG_EFI globally for all of x86. >> > > Well, it doesn't *solve* the problem with cross-mode, but it should work > as-is for EFI32->32-bit kernel and EFI64->64-bit kernel. For the > cross-mode kernels they will simply not do anything. > > Either way, nothing bad should come from it. The worst thing that will > happen is that the kernel says "I don't have any EFI that I recognize." > > Cross-mode support will always require a secondary bootloader (since as > far as I know there is no concept of "fat binaries" for EFI), but Matt > Fleming is working on genuine cross-mode support for both the boot stub > and (eventually) run time support. > James, does this address your concerns? -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
