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powerpc/mm/hash: Store addr_limit in PACA

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We optmize the slice page size array copy to paca by copying only the
range based on addr_limit. This will require us to not look at page size
array beyond addr_limit in PACA on slb fault. To enable that copy task
size to paca which will be used during slb fault.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Rename from task_size to addr_limit, consolidate #ifdefs]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V
2017-03-22 09:06:59 +05:30
committed by Michael Ellerman
parent 957b778a16
commit bb1832217a
4 changed files with 10 additions and 1 deletions
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arch/powerpc/include/asm/paca.h
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@@ -139,6 +139,7 @@ struct paca_struct {
#ifdef CONFIG_PPC_MM_SLICES
u64 mm_ctx_low_slices_psize;
unsigned char mm_ctx_high_slices_psize[SLICE_ARRAY_SIZE];
unsigned long addr_limit;
#else
u16 mm_ctx_user_psize;
u16 mm_ctx_sllp;