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authorChristophe Leroy <christophe.leroy@c-s.fr>2016-02-03 23:34:21 +0100
committerScott Wood <oss@buserror.net>2016-03-09 10:44:17 -0600
commit921fff351c3a7d2895f22d4a7a36b2f667709b9c (patch)
treec2065fdb41a6fba6ca686bc4a34bf6e12f476302 /arch/powerpc/kernel/head_8xx.S
parent501ea76687ef16a88a96cc9848e5d760f1c68e4e (diff)
powerpc/8xx: CONFIG_DEBUG_PAGEALLOC requires ITLBmiss for kernel addresses
When CONFIG_DEBUG_PAGEALLOC is activated, the initial TLB mapping gets flushed to track accesses to wrong areas. Therefore, kernel addresses will also generate ITLB misses. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/kernel/head_8xx.S')
-rw-r--r--arch/powerpc/kernel/head_8xx.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 78c1eba4c04a..e629e28b57e1 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S
@@ -329,7 +329,7 @@ InstructionTLBMiss:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
-#ifdef CONFIG_MODULES
+#if defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC)
/* Only modules will cause ITLB Misses as we always
* pin the first 8MB of kernel memory */
mfspr r11, SPRN_SRR0 /* Get effective address of fault */