hi I am experiencing a very annoying behavior with my HPPA C3600: if I compile the (linux) kernel with -mlong-calls then the IO (e.g. file copy) becomes very slow, and the PCI becomes unstable (i.e. it crashes the machine) kernel gcc binutils with mlong without mlong 4.15.7 4.9.3 2.25.1 13.4 MB/s 27.0 MB/s 4.15.7 6.4.0 2.25.1 13.4 MB/s 27.0 MB/s 4.15.7 6.4.0 2.29.1 14.4 MB/s 25.0 MB/s these tests were performed with dd if=/dev/zero of=here bs=1k count=100000 -mlong-calls is enabled in the kernel by "CONFIG_MLONGCALLS" the help-guide says "If you configure the kernel to include many drivers built-in instead as modules, the kernel executable may become too big, so that the linker will not be able to resolve some long branches and fails to link your vmlinux kernel. In that case enabling this option will help you to overcome this limit by using the -mlong-calls compiler option. Usually you want to say N here, unless you e.g. want to build a kernel which includes all necessary drivers built-in and which can be used for TFTP booting without the need to have an initrd ramdisk. Enabling this option will probably slow down your kernel" I need -mlong-calls because I need to compile the kernel without kernel-modules, all built-in, that makes the size of the kernel of about 23Mbytes, thus without -mlong-calls the linker fails to "link" objects let me know -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
