From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
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 [thread overview]
Message-ID: <1453972285-8822-1-git-send-email-khandual@linux.vnet.ibm.com> (raw)
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 <khandual@linux.vnet.ibm.com>
---
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
next reply other threads:[~2016-01-28 9:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-28 9:11 Anshuman Khandual [this message]
2016-01-28 9:11 ` [PATCH 2/2] selfttest/powerpc: Add memory page migration tests Anshuman Khandual
2016-01-28 11:04 ` [PATCH 1/2] powerpc/mm: Enable HugeTLB page migration Anshuman Khandual
2016-01-28 14:44 ` Aneesh Kumar K.V
2016-01-29 9:15 ` Anshuman Khandual
2016-02-02 6:19 ` Anshuman Khandual
2016-02-24 12:20 ` Anshuman Khandual
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