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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-03-22 06:36:59 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-01 13:12:27 +0300 |
| commit | bb1832217a859f6dbe4a45ff2ba7fdcab0bb3958 (patch) | |
| tree | c69f520be8c0f319fdef84b867eb6ab8944198d8 /arch/powerpc/kernel/paca.c | |
| parent | 957b778a166e32e242a33fdab693ffb256a19cbd (diff) | |
| download | linux-bb1832217a859f6dbe4a45ff2ba7fdcab0bb3958.tar.xz | |
powerpc/mm/hash: Store addr_limit in PACA
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>
Diffstat (limited to 'arch/powerpc/kernel/paca.c')
| -rw-r--r-- | arch/powerpc/kernel/paca.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index a2c7a6456ee6..8d63627e067f 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -254,6 +254,7 @@ void copy_mm_to_paca(struct mm_struct *mm) get_paca()->mm_ctx_id = context->id; #ifdef CONFIG_PPC_MM_SLICES VM_BUG_ON(!mm->context.addr_limit); + get_paca()->addr_limit = mm->context.addr_limit; get_paca()->mm_ctx_low_slices_psize = context->low_slices_psize; memcpy(&get_paca()->mm_ctx_high_slices_psize, &context->high_slices_psize, TASK_SLICE_ARRAY_SZ(mm)); |