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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2023-07-25 00:37:55 +0530 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 10:12:55 -0700 |
| commit | 27af67f35631ac4b61b5e4455b44c9aee8d2cc4b (patch) | |
| tree | f73ea1ff4b659455df3261cae9596d1b62c4520a /include/linux/page_ext.h | |
| parent | powerpc/mm/trace: convert trace event to trace event class (diff) | |
| download | wireguard-linux-27af67f35631ac4b61b5e4455b44c9aee8d2cc4b.tar.xz wireguard-linux-27af67f35631ac4b61b5e4455b44c9aee8d2cc4b.zip | |
powerpc/book3s64/mm: enable transparent pud hugepage
This is enabled only with radix translation and 1G hugepage size. This
will be used with devdax device memory with a namespace alignment of 1G.
Anon transparent hugepage is not supported even though we do have helpers
checking pud_trans_huge(). We should never find that return true. The
only expected pte bit combination is _PAGE_PTE | _PAGE_DEVMAP.
Some of the helpers are never expected to get called on hash translation
and hence is marked to call BUG() in such a case.
Link: https://lkml.kernel.org/r/20230724190759.483013-10-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/page_ext.h')
0 files changed, 0 insertions, 0 deletions