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powerpc/mm: Use 32bit array for slb cache

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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>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Aneesh Kumar K.V 2012-09-10 02:52:54 +00:00 committed by Benjamin Herrenschmidt
parent ac8dc2823a
commit 735cafc32b
2 changed files with 5 additions and 5 deletions
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2
arch/powerpc/include/asm/paca.h
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@ -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

8
arch/powerpc/mm/slb_low.S
View file

@ -270,10 +270,10 @@ _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 */