From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-x243.google.com (mail-pf0-x243.google.com [IPv6:2607:f8b0:400e:c00::243]) (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 3wX24s17xCzDqZp for ; Tue, 23 May 2017 14:05:49 +1000 (AEST) Received: by mail-pf0-x243.google.com with SMTP id n23so24476502pfb.3 for ; Mon, 22 May 2017 21:05:49 -0700 (PDT) From: Oliver O'Halloran To: linuxppc-dev@lists.ozlabs.org Cc: linux-mm@kvack.org, Oliver O'Halloran , x86@kernel.org 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> 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. 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