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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-06-01 20:05:04 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2017-06-08 20:42:56 +1000 |
| commit | 92d9dfda8b547cc292af27e11e11c9eff3bb574f (patch) | |
| tree | 1fa68d2a4d3a5857040e388f2d514ef25222b050 /arch/powerpc/mm/mmu_context_book3s64.c | |
| parent | cxl: Fix error path on bad ioctl (diff) | |
| download | linux-dev-92d9dfda8b547cc292af27e11e11c9eff3bb574f.tar.xz linux-dev-92d9dfda8b547cc292af27e11e11c9eff3bb574f.zip | |
powerpc/mm/4k: Limit 4k page size config to 64TB virtual address space
Supporting 512TB requires us to do a order 3 allocation for level 1 page
table (pgd). This results in page allocation failures with certain workloads.
For now limit 4k linux page size config to 64TB.
Fixes: f6eedbba7a26 ("powerpc/mm/hash: Increase VA range to 128TB")
Reported-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/mmu_context_book3s64.c')
| -rw-r--r-- | arch/powerpc/mm/mmu_context_book3s64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/mmu_context_book3s64.c b/arch/powerpc/mm/mmu_context_book3s64.c index c6dca2ae78ef..a3edf813d455 100644 --- a/arch/powerpc/mm/mmu_context_book3s64.c +++ b/arch/powerpc/mm/mmu_context_book3s64.c @@ -99,7 +99,7 @@ static int hash__init_new_context(struct mm_struct *mm) * mm->context.addr_limit. Default to max task size so that we copy the * default values to paca which will help us to handle slb miss early. */ - mm->context.addr_limit = TASK_SIZE_128TB; + mm->context.addr_limit = DEFAULT_MAP_WINDOW_USER64; /* * The old code would re-promote on fork, we don't do that when using |