From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f198.google.com (mail-qt0-f198.google.com [209.85.216.198]) by kanga.kvack.org (Postfix) with ESMTP id 1756C6B0279 for ; Tue, 23 May 2017 05:20:35 -0400 (EDT) Received: by mail-qt0-f198.google.com with SMTP id a46so57835318qte.3 for ; Tue, 23 May 2017 02:20:35 -0700 (PDT) Received: from mail-qt0-x244.google.com (mail-qt0-x244.google.com. [2607:f8b0:400d:c0d::244]) by mx.google.com with ESMTPS id r190si21185662qkb.125.2017.05.23.02.20.33 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 23 May 2017 02:20:34 -0700 (PDT) Received: by mail-qt0-x244.google.com with SMTP id a46so21445744qte.0 for ; Tue, 23 May 2017 02:20:33 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20170523040524.13717-5-oohall@gmail.com> References: <20170523040524.13717-1-oohall@gmail.com> <20170523040524.13717-5-oohall@gmail.com> From: Balbir Singh Date: Tue, 23 May 2017 19:20:32 +1000 Message-ID: Subject: Re: [PATCH 5/6] mm, x86: Add ARCH_HAS_ZONE_DEVICE Content-Type: text/plain; charset="UTF-8" Sender: owner-linux-mm@kvack.org List-ID: To: Oliver O'Halloran Cc: "open list:LINUX FOR POWERPC (32-BIT AND 64-BIT)" , linux-mm , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" On Tue, May 23, 2017 at 2:05 PM, Oliver O'Halloran 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@kernel.org > Signed-off-by: Oliver O'Halloran > --- > 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org