On 07/12/2013 11:47 PM, Yinghai Lu wrote: > > for 32 bit, that is ok. > for 64 bit via 32bit bootloader, arch/x86/boot/compressed/head_64.S > will set page table for first 4G still ok. > for 64 bit via 64bit loader, like kexec via bzImage64, First Kernel/Kexec only > set ident mapping for usable range, so mmio just under 64 is not mapped. > > Looks like we need to update boot.txt to add requirement for 64bit bootloader > that 0-4G need to be all ident mapping? > I think that is an unrealistic requirement, especially if this is the sole user. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
