On Tue, May 23, 2017 at 2:05 PM, Oliver O'Halloran <oohall@xxxxxxxxx> wrote: > Currently ZONE_DEVICE depends on X86_64. This is fine for now, but it > will get unwieldly as new platforms get ZONE_DEVICE support. Moving it > to an arch selected Kconfig option to save us some trouble in the > future. > > Cc: x86@xxxxxxxxxx > Signed-off-by: Oliver O'Halloran <oohall@xxxxxxxxx> > --- > arch/x86/Kconfig | 1 + > mm/Kconfig | 5 ++++- > 2 files changed, 5 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index cd18994a9555..acbb15234562 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -59,6 +59,7 @@ config X86 > select ARCH_HAS_STRICT_KERNEL_RWX > select ARCH_HAS_STRICT_MODULE_RWX > select ARCH_HAS_UBSAN_SANITIZE_ALL > + select ARCH_HAS_ZONE_DEVICE if X86_64 > select ARCH_HAVE_NMI_SAFE_CMPXCHG > select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI > select ARCH_MIGHT_HAVE_PC_PARPORT > diff --git a/mm/Kconfig b/mm/Kconfig > index beb7a455915d..2d38a4abe957 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -683,12 +683,15 @@ config IDLE_PAGE_TRACKING > > See Documentation/vm/idle_page_tracking.txt for more details. > > +config ARCH_HAS_ZONE_DEVICE > + def_bool n > + > config ZONE_DEVICE > bool "Device memory (pmem, etc...) hotplug support" > depends on MEMORY_HOTPLUG > depends on MEMORY_HOTREMOVE > depends on SPARSEMEM_VMEMMAP > - depends on X86_64 #arch_add_memory() comprehends device memory > + depends on ARCH_HAS_ZONE_DEVICE > > help > Device memory hotplug support allows for establishing pmem, Acked-by: Balbir Singh <bsingharora@xxxxxxxxx> -- 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>
