[PATCH] x86_64: Move kernel to 2MB

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@linux.intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index e18eb79bf85544fa67cbb287353b5fba29a7f3db..9fad9df866262db83c1e4e8e61ea0aa57138d935 100644 (file)
--- a/arch/x86_64/Kconfig
+++ b/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
 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
        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
          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