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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org
Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH -V5 04/25] powerpc: Reduce the PTE_INDEX_SIZE
Date: Thu,  4 Apr 2013 11:27:42 +0530	[thread overview]
Message-ID: <1365055083-31956-5-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1365055083-31956-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>

From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>

This make one PMD cover 16MB range. That helps in easier implementation of THP
on power. THP core code make use of one pmd entry to track the hugepage and
the range mapped by a single pmd entry should be equal to the hugepage size
supported by the hardware.

Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/pgtable-ppc64-64k.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/include/asm/pgtable-ppc64-64k.h b/arch/powerpc/include/asm/pgtable-ppc64-64k.h
index be4e287..3c529b4 100644
--- a/arch/powerpc/include/asm/pgtable-ppc64-64k.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64-64k.h
@@ -4,10 +4,10 @@
 #include <asm-generic/pgtable-nopud.h>
 
 
-#define PTE_INDEX_SIZE  12
+#define PTE_INDEX_SIZE  8
 #define PMD_INDEX_SIZE  12
 #define PUD_INDEX_SIZE	0
-#define PGD_INDEX_SIZE  6
+#define PGD_INDEX_SIZE  10
 
 #ifndef __ASSEMBLY__
 #define PTE_TABLE_SIZE	(sizeof(real_pte_t) << PTE_INDEX_SIZE)
-- 
1.7.10

  parent reply	other threads:[~2013-04-04  5:58 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-04  5:57 [PATCH -V5 00/25] THP support for PPC64 Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 01/25] powerpc: Use signed formatting when printing error Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 02/25] powerpc: Save DAR and DSISR in pt_regs on MCE Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 03/25] powerpc: Don't hard code the size of pte page Aneesh Kumar K.V
2013-04-04  5:57 ` Aneesh Kumar K.V [this message]
2013-04-11  7:10   ` [PATCH -V5 04/25] powerpc: Reduce the PTE_INDEX_SIZE David Gibson
2013-04-04  5:57 ` [PATCH -V5 05/25] powerpc: Move the pte free routines from common header Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 06/25] powerpc: Reduce PTE table memory wastage Aneesh Kumar K.V
2013-04-10  4:46   ` David Gibson
2013-04-10  6:29     ` Aneesh Kumar K.V
2013-04-10  7:04       ` David Gibson
2013-04-10  7:53         ` Aneesh Kumar K.V
2013-04-10 17:47           ` Aneesh Kumar K.V
2013-04-11  1:20             ` David Gibson
2013-04-11  1:12           ` David Gibson
2013-04-10  7:14   ` Michael Ellerman
2013-04-10  7:54     ` Aneesh Kumar K.V
2013-04-10  8:52       ` Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 07/25] powerpc: Use encode avpn where we need only avpn values Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 08/25] powerpc: Decode the pte-lp-encoding bits correctly Aneesh Kumar K.V
2013-04-10  7:19   ` David Gibson
2013-04-10  8:11     ` Aneesh Kumar K.V
2013-04-10 17:49       ` Aneesh Kumar K.V
2013-04-11  1:28       ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 09/25] powerpc: Fix hpte_decode to use the correct decoding for page sizes Aneesh Kumar K.V
2013-04-11  3:20   ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 10/25] powerpc: print both base and actual page size on hash failure Aneesh Kumar K.V
2013-04-11  3:21   ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 11/25] powerpc: Print page size info during boot Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 12/25] powerpc: Return all the valid pte ecndoing in KVM_PPC_GET_SMMU_INFO ioctl Aneesh Kumar K.V
2013-04-11  3:24   ` David Gibson
2013-04-11  5:11     ` Aneesh Kumar K.V
2013-04-11  5:57       ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 13/25] powerpc: Update tlbie/tlbiel as per ISA doc Aneesh Kumar K.V
2013-04-11  3:30   ` David Gibson
2013-04-11  5:20     ` Aneesh Kumar K.V
2013-04-11  6:16       ` David Gibson
2013-04-11  6:36         ` Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 14/25] mm/THP: HPAGE_SHIFT is not a #define on some arch Aneesh Kumar K.V
2013-04-11  3:36   ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 15/25] mm/THP: Add pmd args to pgtable deposit and withdraw APIs Aneesh Kumar K.V
2013-04-11  3:40   ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 16/25] mm/THP: withdraw the pgtable after pmdp related operations Aneesh Kumar K.V
2013-04-04  5:57 ` [PATCH -V5 17/25] powerpc/THP: Implement transparent hugepages for ppc64 Aneesh Kumar K.V
2013-04-11  5:38   ` David Gibson
2013-04-11  7:40     ` Aneesh Kumar K.V
2013-04-12  0:51       ` David Gibson
2013-04-12  5:06         ` Aneesh Kumar K.V
2013-04-12  5:39           ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 18/25] powerpc/THP: Double the PMD table size for THP Aneesh Kumar K.V
2013-04-11  6:18   ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 19/25] powerpc/THP: Differentiate THP PMD entries from HUGETLB PMD entries Aneesh Kumar K.V
2013-04-10  7:21   ` Michael Ellerman
2013-04-10 18:26     ` Aneesh Kumar K.V
2013-04-12  1:28   ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 20/25] powerpc/THP: Add code to handle HPTE faults for large pages Aneesh Kumar K.V
2013-04-12  4:01   ` David Gibson
2013-04-04  5:57 ` [PATCH -V5 21/25] powerpc: Handle hugepage in perf callchain Aneesh Kumar K.V
2013-04-12  1:34   ` David Gibson
2013-04-12  5:05     ` Aneesh Kumar K.V
2013-04-04  5:58 ` [PATCH -V5 22/25] powerpc/THP: get_user_pages_fast changes Aneesh Kumar K.V
2013-04-12  1:41   ` David Gibson
2013-04-04  5:58 ` [PATCH -V5 23/25] powerpc/THP: Enable THP on PPC64 Aneesh Kumar K.V
2013-04-04  5:58 ` [PATCH -V5 24/25] powerpc: Optimize hugepage invalidate Aneesh Kumar K.V
2013-04-12  4:21   ` David Gibson
2013-04-14 10:02     ` Aneesh Kumar K.V
2013-04-15  1:18       ` David Gibson
2013-04-04  5:58 ` [PATCH -V5 25/25] powerpc: Handle hugepages in kvm Aneesh Kumar K.V
2013-04-04  6:00 ` [PATCH -V5 00/25] THP support for PPC64 Simon Jeons
2013-04-04  6:10   ` Aneesh Kumar K.V
2013-04-04  6:14 ` Simon Jeons
2013-04-04  8:38   ` Aneesh Kumar K.V
2013-04-19  1:55 ` Simon Jeons

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