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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2019-04-03 15:12:33 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-04-17 21:36:51 +1000 |
| commit | 7a3a4d763837d3aa654cd1059030950410c04d77 (patch) | |
| tree | 7aac3da0f61a6d20c362b9dda93bdcb1d0be833f /arch/powerpc/mm/ppc_mmu_32.c | |
| parent | eb9d7a62c38628ab0ba6e59d22d7cb7930e415d1 (diff) | |
powerpc/mm_iommu: Allow pinning large regions
When called with vmas_arg==NULL, get_user_pages_longterm() allocates
an array of nr_pages*8 which can easily get greater that the max order,
for example, registering memory for a 256GB guest does this and fails
in __alloc_pages_nodemask().
This adds a loop over chunks of entries to fit the max order limit.
Fixes: 678e174c4c16 ("powerpc/mm/iommu: allow migration of cma allocated pages during mm_iommu_do_alloc", 2019-03-05)
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/ppc_mmu_32.c')
0 files changed, 0 insertions, 0 deletions