From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-x241.google.com (mail-pg0-x241.google.com [IPv6:2607:f8b0:400e:c05::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3wy4zm04XrzDr3d for ; Wed, 28 Jun 2017 11:32:52 +1000 (AEST) Received: by mail-pg0-x241.google.com with SMTP id j186so6235653pge.1 for ; Tue, 27 Jun 2017 18:32:51 -0700 (PDT) From: Oliver O'Halloran To: linuxppc-dev@lists.ozlabs.org Cc: Oliver O'Halloran , linux-mm@kvack.org Subject: [PATCH v4 1/6] mm, x86: Add ARCH_HAS_ZONE_DEVICE to Kconfig Date: Wed, 28 Jun 2017 11:32:31 +1000 Message-Id: <20170628013236.413-1-oohall@gmail.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Currently ZONE_DEVICE depends on X86_64 and this will get unwieldly as new architectures (and platforms) get ZONE_DEVICE support. Move to an arch selected Kconfig option to save us the trouble. Cc: linux-mm@kvack.org Acked-by: Ingo Molnar Acked-by: Balbir Singh Signed-off-by: Oliver O'Halloran --- Andew, the rest of the series should be going in via the ppc tree, but since there's nothing ppc specific about this patch do you want to take it via mm? -- v2: Added missing hunk. --- arch/x86/Kconfig | 1 + mm/Kconfig | 6 +++++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 37a14d7a4e3f..569e39a8293d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -61,6 +61,7 @@ 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 5027cbc251f9..48b1af447fa7 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -668,12 +668,16 @@ config IDLE_PAGE_TRACKING See Documentation/vm/idle_page_tracking.txt for more details. +# arch_add_memory() comprehends device memory +config ARCH_HAS_ZONE_DEVICE + bool + 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, -- 2.9.4