The patch titled
Subject: mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes
has been added to the -mm tree. Its filename is
mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes.patch
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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Subject: mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes
ARM64 architecture also supports 32MB and 512MB HugeTLB page sizes. This
just adds mmap() system call argument encoding for them.
Link: http://lkml.kernel.org/r/1537841300-6979-1-git-send-email-anshuman.khandual@xxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Acked-by: Punit Agrawal <punit.agrawal@xxxxxxx>
Acked-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/uapi/asm-generic/hugetlb_encode.h | 2 ++
include/uapi/linux/memfd.h | 2 ++
include/uapi/linux/mman.h | 2 ++
include/uapi/linux/shm.h | 2 ++
4 files changed, 8 insertions(+)
--- a/include/uapi/asm-generic/hugetlb_encode.h~mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes
+++ a/include/uapi/asm-generic/hugetlb_encode.h
@@ -26,7 +26,9 @@
#define HUGETLB_FLAG_ENCODE_2MB (21 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_8MB (23 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_16MB (24 << HUGETLB_FLAG_ENCODE_SHIFT)
+#define HUGETLB_FLAG_ENCODE_32MB (25 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_256MB (28 << HUGETLB_FLAG_ENCODE_SHIFT)
+#define HUGETLB_FLAG_ENCODE_512MB (29 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_1GB (30 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_2GB (31 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_16GB (34 << HUGETLB_FLAG_ENCODE_SHIFT)
--- a/include/uapi/linux/memfd.h~mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes
+++ a/include/uapi/linux/memfd.h
@@ -25,7 +25,9 @@
#define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
#define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
#define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
+#define MFD_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
#define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
+#define MFD_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
#define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
#define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
#define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
--- a/include/uapi/linux/mman.h~mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes
+++ a/include/uapi/linux/mman.h
@@ -28,7 +28,9 @@
#define MAP_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
#define MAP_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
#define MAP_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
+#define MAP_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
#define MAP_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
+#define MAP_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
#define MAP_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
#define MAP_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
#define MAP_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
--- a/include/uapi/linux/shm.h~mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes
+++ a/include/uapi/linux/shm.h
@@ -65,7 +65,9 @@ struct shmid_ds {
#define SHM_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
#define SHM_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
#define SHM_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
+#define SHM_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
#define SHM_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
+#define SHM_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
#define SHM_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
#define SHM_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
#define SHM_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
_
Patches currently in -mm which might be from anshuman.khandual@xxxxxxx are
mm-migrate-split-only-transparent-huge-pages-when-allocation-fails.patch
mm-hugetlb-add-mmap-encodings-for-32mb-and-512mb-page-sizes.patch
