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author | Aneesh Kumar K.V | 2015-12-01 04:36:54 +0100 |
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committer | Michael Ellerman | 2015-12-14 05:19:14 +0100 |
commit | 6a119eae942c51ccf1091936c534bac12cae630e (patch) | |
tree | f1124f47f1e7b9d94777623e3914f74ea4aad8a3 /certs | |
parent | powerpc/mm: Move THP headers around (diff) | |
download | kernel-qcow2-linux-6a119eae942c51ccf1091936c534bac12cae630e.tar.gz kernel-qcow2-linux-6a119eae942c51ccf1091936c534bac12cae630e.tar.xz kernel-qcow2-linux-6a119eae942c51ccf1091936c534bac12cae630e.zip |
powerpc/mm: Add a _PAGE_PTE bit
For a pte entry we will have _PAGE_PTE set. Our pte page
address have a minimum alignment requirement of HUGEPD_SHIFT_MASK + 1.
We use the lower 7 bits to indicate hugepd. ie.
For pmd and pgd we can find:
1) _PAGE_PTE set pte -> indicate PTE
2) bits [2..6] non zero -> indicate hugepd.
They also encode the size. We skip bit 1 (_PAGE_PRESENT).
3) othewise pointer to next table.
Acked-by: Scott Wood <scottwood@freescale.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 'certs')
0 files changed, 0 insertions, 0 deletions