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powerpc/mm: Increase the slice range to 64TB

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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>
This commit is contained in:
Aneesh Kumar K.V
2012-09-10 02:52:52 +00:00
committed by Benjamin Herrenschmidt
parent 67550080b8
commit 7aa0727f33
5 changed files with 109 additions and 55 deletions
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6
arch/powerpc/include/asm/page_64.h
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@@ -82,7 +82,11 @@ extern u64 ppc64_pft_size;
struct slice_mask {
u16 low_slices;
u16 high_slices;
/*
* This should be derived out of PGTABLE_RANGE. For the current
* max 64TB, u64 should be ok.
*/
u64 high_slices;
};
struct mm_struct;