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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org,
	michael@ellerman.id.au, anton@samba.org
Cc: linuxppc-dev@lists.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH -V1 8/9] arch/powerpc: Use 32bit array for slb cache
Date: Fri, 29 Jun 2012 19:47:36 +0530	[thread overview]
Message-ID: <1340979457-26018-9-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1340979457-26018-1-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.

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 c1fc81c..d522679 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -269,10 +269,10 @@ _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) */
+	rldicl	r10,r10,36,28		/* 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:[~2012-06-29 14:18 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-29 14:17 [PATCH -V1 0/9] arch/powerpc: Add 64TB support to ppc64 Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 1/9] arch/powerpc: Use hpt_va to compute virtual address Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 2/9] arch/powerpc: Convert virtual address to a struct Aneesh Kumar K.V
2012-06-29 17:44   ` Cody P Schafer
2012-06-29 21:43   ` Benjamin Herrenschmidt
2012-06-29 14:17 ` [PATCH -V1 3/9] arch/powerpc: Simplify hpte_decode Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 4/9] arch/powerpc: Use vsid and segment offset to represent virtual address Aneesh Kumar K.V
2012-06-29 21:45   ` Benjamin Herrenschmidt
2012-07-01  7:53     ` Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 5/9] arch/powerpc: Make KERN_VIRT_SIZE not dependend on PGTABLE_RANGE Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 6/9] arch/powerpc: Increase the slice range to 64TB Aneesh Kumar K.V
2012-06-29 14:17 ` [PATCH -V1 7/9] arch/powerpc: Use 50 bits of VSID in slbmte Aneesh Kumar K.V
2012-06-29 14:17 ` Aneesh Kumar K.V [this message]
2012-06-29 14:17 ` [PATCH -V1 9/9] arch/powerpc: Add 64TB support Aneesh Kumar K.V

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