From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [103.22.144.67]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id D8CA71A030F for ; Thu, 28 Jan 2016 20:12:19 +1100 (AEDT) Received: from e23smtp06.au.ibm.com (e23smtp06.au.ibm.com [202.81.31.148]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id AD0C61402CD for ; Thu, 28 Jan 2016 20:12:19 +1100 (AEDT) Received: from localhost by e23smtp06.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 28 Jan 2016 19:12:19 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id 3BF6E2BB005E for ; Thu, 28 Jan 2016 20:12:16 +1100 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u0S9C8Wu60293340 for ; Thu, 28 Jan 2016 20:12:16 +1100 Received: from d23av02.au.ibm.com (localhost [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u0S9BhmR028898 for ; Thu, 28 Jan 2016 20:11:43 +1100 From: Anshuman Khandual To: linuxppc-dev@ozlabs.org Cc: aneesh.kumar@linux.vnet.ibm.com, mpe@ellerman.id.au Subject: [PATCH 1/2] powerpc/mm: Enable HugeTLB page migration Date: Thu, 28 Jan 2016 14:41:24 +0530 Message-Id: <1453972285-8822-1-git-send-email-khandual@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This enables HugeTLB page migration for PPC64_BOOK3S systems which implement HugeTLB page at the PMD level. It enables the kernel configuration option CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION by default which turns on the function hugepage_migration_supported() during migration. After the recent changes to the PTE format, HugeTLB page migration happens successfully. Signed-off-by: Anshuman Khandual --- arch/powerpc/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index e4824fd..65d52a0 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -82,6 +82,10 @@ config GENERIC_HWEIGHT config ARCH_HAS_DMA_SET_COHERENT_MASK bool +config ARCH_ENABLE_HUGEPAGE_MIGRATION + def_bool y + depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION + config PPC bool default y -- 2.1.0