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powerpc/mm: Add 64TB support

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Increase max addressable range to 64TB. This is not tested on
real hardware yet.

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 02:52:55 +00:00
committed by Benjamin Herrenschmidt
parent 735cafc32b
commit 048ee0993e
7 changed files with 54 additions and 16 deletions
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12
arch/powerpc/mm/slb_low.S
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@@ -56,6 +56,12 @@ _GLOBAL(slb_allocate_realmode)
*/
_GLOBAL(slb_miss_kernel_load_linear)
li r11,0
li r9,0x1
/*
* for 1T we shift 12 bits more. slb_finish_load_1T will do
* the necessary adjustment
*/
rldimi r10,r9,(CONTEXT_BITS + USER_ESID_BITS),0
BEGIN_FTR_SECTION
b slb_finish_load
END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT)
@@ -85,6 +91,12 @@ _GLOBAL(slb_miss_kernel_load_vmemmap)
_GLOBAL(slb_miss_kernel_load_io)
li r11,0
6:
li r9,0x1
/*
* for 1T we shift 12 bits more. slb_finish_load_1T will do
* the necessary adjustment
*/
rldimi r10,r9,(CONTEXT_BITS + USER_ESID_BITS),0
BEGIN_FTR_SECTION
b slb_finish_load
END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT)