Hi, Enclosed patch allows to configure out the doublefault exception handler. The original patch of Matt Mackall added the option in init/Kconfig, but because this is a x86-specific thing, I thought arch/x86/Kconfig would be a better place. Is that correct ? This patch applies on top on the DMI scanning code patch I've sent yesterday, because the DOUBLEFAULT config option is right after the DMI config option. Is that ok, or should I propose a patch on top of a vanilla 2.6.25-rc1 ? Thanks for your review and comments, Thomas --- This patch adds the ability to disable the doublefault exception handler, in order to save some kernel space. The doublefault exception handler was already conditionnaly compiled using CONFIG_DOUBLEFAULT, but there was no way to change the value of this configuration option. The option is only visible if CONFIG_EMBEDDED is selected, in order to not confuse other users. The kernel space savings are as follows: text data bss dec hex filename 1076076 128656 98304 1303036 13e1fc vmlinux.before 1075772 119952 94208 1289932 13aecc vmlinux.after -304 -8704 -4096 -13104 -3330 +/- This patch is part of the Linux Tiny project, and is based on previous work by Matt Mackall . Signed-off-by: Thomas Petazzoni --- arch/x86/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) Index: linux/arch/x86/Kconfig =================================================================== --- linux.orig/arch/x86/Kconfig +++ linux/arch/x86/Kconfig @@ -439,6 +439,13 @@ affected by entries in the DMI blacklist. Required by PNP BIOS code. +config DOUBLEFAULT + default y + bool "Enable doublefault exception handler" if EMBEDDED + help + This option allows trapping of rare doublefault exceptions + that would otherwise cause a system to silently reboot. + config GART_IOMMU bool "GART IOMMU support" if EMBEDDED default y -- Thomas Petazzoni, thomas.petazzoni@enix.org, http://thomas.enix.org Jabber, thomas.petazzoni@jabber.dk Toulibre, http://www.toulibre.org - APRIL, http://www.april.org Fingerprint : 0BE1 4CF3 CEA4 AC9D CC6E 1624 F653 CB30 98D3 F7A7