powerpc/64s/hash: Fix 512T hint detection to use >= 128T

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commit 7ece370996 upstream.

Currently userspace is able to request mmap() search between 128T-512T
by specifying a hint address that is greater than 128T. But that means
a hint of 128T exactly will return an address below 128T, which is
confusing and wrong.

So fix the logic to check the hint is greater than *or equal* to 128T.

Fixes: f4ea6dcb08 ("powerpc/mm: Enable mappings above 128TB")
Suggested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Suggested-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Split out of Nick's bigger patch]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Michael Ellerman 2017-11-13 23:17:28 +11:00 • committed by Greg Kroah-Hartman

parent de9c35508f

commit 45567ab598

1 changed files with 2 additions and 2 deletions

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arch/powerpc/mm/slice.c

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