From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yb1-f200.google.com (mail-yb1-f200.google.com [209.85.219.200]) by kanga.kvack.org (Postfix) with ESMTP id 96DF98E00A4 for ; Tue, 25 Sep 2018 12:39:44 -0400 (EDT) Received: by mail-yb1-f200.google.com with SMTP id b15-v6so2495130ybg.6 for ; Tue, 25 Sep 2018 09:39:44 -0700 (PDT) Received: from aserp2120.oracle.com (aserp2120.oracle.com. [141.146.126.78]) by mx.google.com with ESMTPS id l202-v6si710388ywc.611.2018.09.25.09.39.43 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 25 Sep 2018 09:39:43 -0700 (PDT) Subject: Re: [PATCH V2] mm/hugetlb: Add mmap() encodings for 32MB and 512MB page sizes References: <1537797985-2406-1-git-send-email-anshuman.khandual@arm.com> <1537841300-6979-1-git-send-email-anshuman.khandual@arm.com> From: Mike Kravetz Message-ID: Date: Tue, 25 Sep 2018 09:39:34 -0700 MIME-Version: 1.0 In-Reply-To: <1537841300-6979-1-git-send-email-anshuman.khandual@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Anshuman Khandual , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: mhocko@kernel.org, punit.agrawal@arm.com, will.deacon@arm.com, akpm@linux-foundation.org On 9/24/18 7:08 PM, Anshuman Khandual wrote: > 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 > --- > > Changes in V2: > - Updated SHM and MFD definitions per Mike Thanks Anshuman, Acked-by: Mike Kravetz -- Mike Kravetz > > 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(+) > > 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/memfd.h b/include/uapi/linux/memfd.h > index 015a4c0..7a8a267 100644 > --- a/include/uapi/linux/memfd.h > +++ b/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 > 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 > diff --git a/include/uapi/linux/shm.h b/include/uapi/linux/shm.h > index dde1344..6507ad0 100644 > --- a/include/uapi/linux/shm.h > +++ b/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 >