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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org
Cc: linuxppc-dev@lists.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH -V5 09/13] arch/powerpc: Use 32bit array for slb cache
Date: Mon, 30 Jul 2012 16:52:15 +0530	[thread overview]
Message-ID: <1343647339-25576-10-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1343647339-25576-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>

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

With larger vsid we need to track more bits of ESID in slb cache
for slb invalidate.

Reviewed-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/paca.h |    2 +-
 arch/powerpc/mm/slb_low.S       |    8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index daf813f..3e7abba 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -100,7 +100,7 @@ struct paca_struct {
 	/* SLB related definitions */
 	u16 vmalloc_sllp;
 	u16 slb_cache_ptr;
-	u16 slb_cache[SLB_CACHE_ENTRIES];
+	u32 slb_cache[SLB_CACHE_ENTRIES];
 #endif /* CONFIG_PPC_STD_MMU_64 */
 
 #ifdef CONFIG_PPC_BOOK3E
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 8e5c9bd..db2cb3f 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -273,10 +273,10 @@ _GLOBAL(slb_compare_rr_to_size)
 	bge	1f
 
 	/* still room in the slb cache */
-	sldi	r11,r3,1		/* r11 = offset * sizeof(u16) */
-	rldicl	r10,r10,36,28		/* get low 16 bits of the ESID */
-	add	r11,r11,r13		/* r11 = (u16 *)paca + offset */
-	sth	r10,PACASLBCACHE(r11)	/* paca->slb_cache[offset] = esid */
+	sldi	r11,r3,2		/* r11 = offset * sizeof(u32) */
+	srdi    r10,r10,28		/* get the 36 bits of the ESID */
+	add	r11,r11,r13		/* r11 = (u32 *)paca + offset */
+	stw	r10,PACASLBCACHE(r11)	/* paca->slb_cache[offset] = esid */
 	addi	r3,r3,1			/* offset++ */
 	b	2f
 1:					/* offset >= SLB_CACHE_ENTRIES */
-- 
1.7.10

  parent reply	other threads:[~2012-07-30 11:22 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-30 11:22 [PATCH -V5 0/13] arch/powerpc: Add 64TB support to ppc64 Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 01/13] arch/powerpc: Use hpt_va to compute virtual address Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 02/13] arch/powerpc: Simplify hpte_decode Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 03/13] arch/powerpc: Convert virtual address to vpn Aneesh Kumar K.V
2012-08-01  4:33   ` Paul Mackerras
2012-08-01  7:23     ` Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 04/13] arch/powerpc: Rename va " Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 05/13] arch/powerpc: Make KERN_VIRT_SIZE not dependend on PGTABLE_RANGE Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 06/13] arch/powerpc: Increase the slice range to 64TB Aneesh Kumar K.V
2012-08-01  5:16   ` Paul Mackerras
2012-08-01  7:43     ` Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 07/13] arch/powerpc: Make some of the PGTABLE_RANGE dependency explicit Aneesh Kumar K.V
2012-08-01  5:18   ` Paul Mackerras
2012-08-01  7:45     ` Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 08/13] arch/powerpc: Use the rquired number of VSID bits in slbmte Aneesh Kumar K.V
2012-08-01  5:19   ` Paul Mackerras
2012-07-30 11:22 ` Aneesh Kumar K.V [this message]
2012-07-30 11:22 ` [PATCH -V5 10/13] arch/powerpc: Add 64TB support Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 11/13] arch/powerpc: properly isolate kernel and user proto-VSID Aneesh Kumar K.V
2012-08-01  4:31   ` Paul Mackerras
2012-08-01  7:58     ` Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 12/13] arch/powerpc: Replace open coded CONTEXT_BITS value Aneesh Kumar K.V
2012-08-01  5:29   ` Paul Mackerras
2012-08-01  9:56     ` Aneesh Kumar K.V
2012-07-30 11:22 ` [PATCH -V5 13/13] arch/powerpc: Update VSID allocation documentation Aneesh Kumar K.V
2012-08-01  5:35   ` Paul Mackerras
2012-08-01 10:01     ` Aneesh Kumar K.V

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