From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f200.google.com (mail-pf0-f200.google.com [209.85.192.200]) by kanga.kvack.org (Postfix) with ESMTP id 321A46B02F4 for ; Tue, 23 May 2017 00:05:48 -0400 (EDT) Received: by mail-pf0-f200.google.com with SMTP id c6so151300933pfj.5 for ; Mon, 22 May 2017 21:05:48 -0700 (PDT) Received: from mail-pf0-x243.google.com (mail-pf0-x243.google.com. [2607:f8b0:400e:c00::243]) by mx.google.com with ESMTPS id v2si19693434plk.313.2017.05.22.21.05.47 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 22 May 2017 21:05:47 -0700 (PDT) Received: by mail-pf0-x243.google.com with SMTP id u26so24494412pfd.2 for ; Mon, 22 May 2017 21:05:47 -0700 (PDT) From: Oliver O'Halloran Subject: [PATCH 5/6] mm, x86: Add ARCH_HAS_ZONE_DEVICE Date: Tue, 23 May 2017 14:05:23 +1000 Message-Id: <20170523040524.13717-5-oohall@gmail.com> In-Reply-To: <20170523040524.13717-1-oohall@gmail.com> References: <20170523040524.13717-1-oohall@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: linuxppc-dev@lists.ozlabs.org Cc: linux-mm@kvack.org, Oliver O'Halloran , x86@kernel.org 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, -- 2.9.3 -- 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