diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-02-03 23:34:21 +0100 |
|---|---|---|
| committer | Scott Wood <oss@buserror.net> | 2016-03-09 17:44:17 +0100 |
| commit | 921fff351c3a7d2895f22d4a7a36b2f667709b9c (patch) | |
| tree | c2065fdb41a6fba6ca686bc4a34bf6e12f476302 | |
| parent | powerpc/885: set SDCR to 0x40 (diff) | |
| download | linux-921fff351c3a7d2895f22d4a7a36b2f667709b9c.tar.xz linux-921fff351c3a7d2895f22d4a7a36b2f667709b9c.zip | |
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>
| -rw-r--r-- | arch/powerpc/kernel/head_8xx.S | 2 |
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 */ |