From: Aneesh Kumar K.V Date: Mon, 10 Sep 2012 02:52:54 +0000 (+0000) Subject: powerpc/mm: Use 32bit array for slb cache X-Git-Tag: upstream/snapshot3+hdmi~6528^2~33 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=735cafc32b661f08a266a8d754e6cfbd82c11704;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git powerpc/mm: Use 32bit array for slb cache With larger vsid we need to track more bits of ESID in slb cache for slb invalidate. Reviewed-by: Paul Mackerras Signed-off-by: Aneesh Kumar K.V Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index 7796519..e9e7a69 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 3b75f19..f6a2625 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -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 */