On 15/01/2018 18:49, Thomas Gleixner wrote: > On Mon, 15 Jan 2018, Laurent Dufour wrote: >> On 12/01/2018 19:57, Thomas Gleixner wrote: >>> On Fri, 12 Jan 2018, Laurent Dufour wrote: >>> >>>> Introduce CONFIG_SPF which turns on the Speculative Page Fault handler when >>>> building for 64bits with SMP. >>>> >>>> Signed-off-by: Laurent Dufour <ldufour@xxxxxxxxxxxxxxxxxx> >>>> --- >>>> arch/x86/Kconfig | 4 ++++ >>>> 1 file changed, 4 insertions(+) >>>> >>>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig >>>> index a317d5594b6a..d74353b85aaf 100644 >>>> --- a/arch/x86/Kconfig >>>> +++ b/arch/x86/Kconfig >>>> @@ -2882,6 +2882,10 @@ config X86_DMA_REMAP >>>> config HAVE_GENERIC_GUP >>>> def_bool y >>>> >>>> +config SPF >>>> + def_bool y >>>> + depends on X86_64 && SMP >>> >>> Can you please put that into a generic place as >>> >>> config SPF >>> bool >>> >>> and let the architectures select it. >> >> I'll change that to let the architectures (x86 and ppc64 currently) >> selecting it, but the definition will remain in the arch/xxx/Kconfig file >> since it depends on the architecture support in the page fault handler. > > Errm. No. > > config SPECULATIVE_PAGE_FAULT > bool > > goes into a generic config file, e.g. mm/Kconfig > > Each architecture which implements support does: > > select SPECULATIVE_PAGE_FAULT > > in arch/xxx/Kconfig Oh ok, I think I got it this time ;) Will do this way, this will be smarter. Thanks a lot, Laurent. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
