powerpc/mm: Increase the slice range to 64TB
This patch makes the high psizes mask as an unsigned char array
so that we can have more than 16TB. Currently we support upto
64TB
Reviewed-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h
index 6aeb498..7cbd541 100644
--- a/arch/powerpc/include/asm/mmu-hash64.h
+++ b/arch/powerpc/include/asm/mmu-hash64.h
@@ -460,7 +460,11 @@
#ifdef CONFIG_PPC_MM_SLICES
u64 low_slices_psize; /* SLB page size encodings */
- u64 high_slices_psize; /* 4 bits per slice for now */
+ /*
+ * Right now we support 64TB and 4 bits for each
+ * 1TB slice we need 32 bytes for 64TB.
+ */
+ unsigned char high_slices_psize[32]; /* 4 bits per slice for now */
#else
u16 sllp; /* SLB page size encoding */
#endif