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powerpc/mm: vmalloc abstraction in preparation for radix

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The vmalloc range differs between hash and radix config. Hence make
VMALLOC_START and related constants a variable which will be runtime
initialized depending on whether hash or radix mode is active.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Fix missing init of ioremap_bot in pgtable_64.c for ppc64e]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V
2016-04-29 23:26:21 +10:00
committed by Michael Ellerman
parent 4dfb88ca9b
commit d6a9996e84
8 changed files with 118 additions and 14 deletions
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2
arch/powerpc/mm/slb_low.S
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@@ -91,7 +91,7 @@ slb_miss_kernel_load_vmemmap:
* can be demoted from 64K -> 4K dynamically on some machines
*/
clrldi r11,r10,48
cmpldi r11,(VMALLOC_SIZE >> 28) - 1
cmpldi r11,(H_VMALLOC_SIZE >> 28) - 1
bgt 5f
lhz r11,PACAVMALLOCSLLP(r13)
b 6f