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powerpc/mm: Add radix support for hugetlb

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Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V
2016-04-29 23:26:25 +10:00
committed by Michael Ellerman
parent 2f5f0dfd1e
commit 484837601d
6 changed files with 132 additions and 1 deletions
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8
arch/powerpc/mm/hugetlbpage.c
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@@ -711,6 +711,9 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
struct hstate *hstate = hstate_file(file);
int mmu_psize = shift_to_mmu_psize(huge_page_shift(hstate));
if (radix_enabled())
return radix__hugetlb_get_unmapped_area(file, addr, len,
pgoff, flags);
return slice_get_unmapped_area(addr, len, flags, mmu_psize, 1);
}
#endif
@@ -823,7 +826,7 @@ static int __init hugetlbpage_init(void)
{
int psize;
if (!mmu_has_feature(MMU_FTR_16M_PAGE))
if (!radix_enabled() && !mmu_has_feature(MMU_FTR_16M_PAGE))
return -ENODEV;
for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) {
@@ -863,6 +866,9 @@ static int __init hugetlbpage_init(void)
HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_16M].shift;
else if (mmu_psize_defs[MMU_PAGE_1M].shift)
HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_1M].shift;
else if (mmu_psize_defs[MMU_PAGE_2M].shift)
HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_2M].shift;
return 0;
}