As suggested by Andi (and Alan), move the default kernel location from 1Mb to 2Mb, to align to the start of a TLB entry. Signed-off-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx> Signed-off-by: Andi Kleen <ak@xxxxxxx> --- arch/x86_64/Kconfig | 12 ++++++++++-- 1 files changed, 10 insertions(+), 2 deletions(-) Index: linux/arch/x86_64/Kconfig =================================================================== --- linux.orig/arch/x86_64/Kconfig +++ linux/arch/x86_64/Kconfig @@ -429,10 +429,10 @@ config CRASH_DUMP config PHYSICAL_START hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP) default "0x1000000" if CRASH_DUMP - default "0x100000" + default "0x200000" help This gives the physical address where the kernel is loaded. Normally - for regular kernels this value is 0x100000 (1MB). But in the case + for regular kernels this value is 0x200000 (2MB). But in the case of kexec on panic the fail safe kernel needs to run at a different address than the panic-ed kernel. This option is used to set the load address for kernels used to capture crash dump on being kexec'ed @@ -464,6 +464,14 @@ config SECCOMP source kernel/Kconfig.hz +config REORDER + bool "Function reordering" + default n + help + This option enables the toolchain to reorder functions for a more + optimal TLB usage. If you have pretty much any version of binutils, + this can increase your kernel build time by roughly one minute. + endmenu # - : send the line "unsubscribe linux-x86_64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
