From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: mike.kravetz@oracle.com, mhocko@kernel.org,
punit.agrawal@arm.com, will.deacon@arm.com,
akpm@linux-foundation.org
Subject: [PATCH] mm/hugetlb: Add mmap() encodings for 32MB and 512MB page sizes
Date: Mon, 24 Sep 2018 19:36:25 +0530 [thread overview]
Message-ID: <1537797985-2406-1-git-send-email-anshuman.khandual@arm.com> (raw)
ARM64 architecture also supports 32MB and 512MB HugeTLB page sizes.
This just adds mmap() system call argument encoding for them.
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
include/uapi/asm-generic/hugetlb_encode.h | 2 ++
include/uapi/linux/mman.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/include/uapi/asm-generic/hugetlb_encode.h b/include/uapi/asm-generic/hugetlb_encode.h
index e4732d3..b0f8e87 100644
--- a/include/uapi/asm-generic/hugetlb_encode.h
+++ b/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)
diff --git a/include/uapi/linux/mman.h b/include/uapi/linux/mman.h
index bfd5938..d0f515d 100644
--- a/include/uapi/linux/mman.h
+++ b/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
--
2.7.4
next reply other threads:[~2018-09-24 14:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-24 14:06 Anshuman Khandual [this message]
2018-09-24 16:48 ` [PATCH] mm/hugetlb: Add mmap() encodings for 32MB and 512MB page sizes Mike Kravetz
2018-09-25 2:08 ` [PATCH V2] " Anshuman Khandual
2018-09-25 10:02 ` Punit Agrawal
2018-09-25 16:39 ` Mike Kravetz
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