From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [RFC PATCH 3/7] powerpc/nohash: Update 64K nohash config to have 32 pte fragement
Date: Wed, 21 Oct 2015 01:42:29 +0530 [thread overview]
Message-ID: <1445371953-9627-4-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1445371953-9627-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
They don't need to track 4k subpage slot details and hence don't need
second half of pgtable_t.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/nohash/64/pgtable-64k.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable-64k.h b/arch/powerpc/include/asm/nohash/64/pgtable-64k.h
index 1d8e26e8167b..dbd9de9264c2 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable-64k.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable-64k.h
@@ -10,14 +10,14 @@
#define PGD_INDEX_SIZE 12
/*
- * we support 8 fragments per PTE page of 64K size
+ * we support 32 fragments per PTE page of 64K size
*/
-#define PTE_FRAG_NR 8
+#define PTE_FRAG_NR 32
/*
* We use a 2K PTE page fragment and another 4K for storing
* real_pte_t hash index. Rounding the entire thing to 8K
*/
-#define PTE_FRAG_SIZE_SHIFT 13
+#define PTE_FRAG_SIZE_SHIFT 11
#define PTE_FRAG_SIZE (1UL << PTE_FRAG_SIZE_SHIFT)
--
2.5.0
next prev parent reply other threads:[~2015-10-20 20:12 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-20 20:12 [RFC PATCH 0/7] Remove 4k subpage tracking with hash 64K config Aneesh Kumar K.V
2015-10-20 20:12 ` [RFC PATCH 1/7] powerpc/mm: Don't hardcode page table size Aneesh Kumar K.V
2015-10-20 20:12 ` [RFC PATCH 2/7] powerpc/mm: Don't hardcode the hash pte slot shift Aneesh Kumar K.V
2015-10-20 20:12 ` Aneesh Kumar K.V [this message]
2015-10-20 20:12 ` [RFC PATCH 4/7] powerpc/mm: Don't track 4k subpage information with 64k linux page size Aneesh Kumar K.V
2015-10-20 20:12 ` [RFC PATCH 5/7] powerpc/mm: update frag size Aneesh Kumar K.V
2015-10-20 20:12 ` [RFC PATCH 6/7] powerpc/mm: Update pte_iterate_hashed_subpaes args Aneesh Kumar K.V
2015-10-20 20:12 ` [RFC PATCH 7/7] powerpc/mm: getrid of real_pte_t Aneesh Kumar K.V
2015-10-29 3:00 ` [RFC PATCH 0/7] Remove 4k subpage tracking with hash 64K config Paul Mackerras
2015-11-03 5:08 ` Aneesh Kumar K.V
2015-11-03 5:30 ` Benjamin Herrenschmidt
2015-11-03 9:18 ` Michael Ellerman
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