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powerpc/powermac: Fix occasional SMP boot failure
[deliverable/linux.git]
/
arch
/
powerpc
/
kernel
/
head_64.S
diff --git
a/arch/powerpc/kernel/head_64.S
b/arch/powerpc/kernel/head_64.S
index b4bcf5a930fafd50a350d6e97bf8cf8cde833764..ebaedafc8e67403efe716703d6110825d589a77d 100644
(file)
--- a/
arch/powerpc/kernel/head_64.S
+++ b/
arch/powerpc/kernel/head_64.S
@@
-1518,6
+1518,15
@@
_GLOBAL(pmac_secondary_start)
/* turn on 64-bit mode */
bl .enable_64b_mode
+ li r0,0
+ mfspr r3,SPRN_HID4
+ rldimi r3,r0,40,23 /* clear bit 23 (rm_ci) */
+ sync
+ mtspr SPRN_HID4,r3
+ isync
+ sync
+ slbia
+
/* get TOC pointer (real address) */
bl .relative_toc
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