m32r: fix tme_handler

Fix pmd_bad check code of tme_handler (TLB Miss Exception handler).
The correct _KERNPG_TABLE value is not 0x263(=611) but 0x163.

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>

diff --git a/arch/m32r/mm/mmu.S b/arch/m32r/mm/mmu.S
index 49a6d16a3d585d5b2a4d567ce7256162340130cc..e9491a5ae827a99f530afd409f1800ff4e54a9fd 100644 (file)
--- a/arch/m32r/mm/mmu.S
+++ b/arch/m32r/mm/mmu.S
@@ -150,9 +150,13 @@ ENTRY(tme_handler)
 
        ; pmd = pmd_offset(pgd, address);
        ld      r3, @r3                 ; r3: pmd data
-       ldi     r2, #-4096
        beqz    r3, 3f                  ; pmd_none(*pmd) ?
 
+       and3    r2, r3, #0xfff
+       add3    r2, r2, #-355           ; _KERNPG_TABLE(=0x163)
+       bnez    r2, 3f                  ; pmd_bad(*pmd) ?
+       ldi     r2, #-4096
+
        ; pte = pte_offset(pmd, address);
        and     r2, r3                  ; r2: pte base addr
        srl3    r3, r0, #10
@@ -263,9 +267,9 @@ ENTRY(tme_handler)
        ld      r1, @r3                 ; r1: pmd
        beqz    r1, 3f                  ; pmd_none(*pmd) ?
 ;
-       and3    r1, r1, #0xeff
-       ldi     r4, #611                ; _KERNPG_TABLE(=611)
-       bne     r1, r4, 3f              ; !pmd_bad(*pmd) ?
+       and3    r1, r1, #0x3ff
+       ldi     r4, #0x163              ; _KERNPG_TABLE(=0x163)
+       bne     r1, r4, 3f              ; pmd_bad(*pmd) ?
 
        .fillinsn
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