Commit 20916d46 authored by Anshuman Khandual's avatar Anshuman Khandual Committed by Greg Kroah-Hartman
Browse files

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@arm.com


Signed-off-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Acked-by: default avatarPunit Agrawal <punit.agrawal@arm.com>
Acked-by: default avatarMike Kravetz <mike.kravetz@oracle.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e6112fc3

include/uapi/asm-generic/hugetlb_encode.h

+2 −0
Original line number Diff line number Diff line
@@ -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)

include/uapi/linux/memfd.h

+2 −0
Original line number Diff line number Diff line
@@ -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

include/uapi/linux/mman.h

+2 −0
Original line number Diff line number Diff line
@@ -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

include/uapi/linux/shm.h

+2 −0
Original line number Diff line number Diff line
@@ -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

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