From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB0B0C43382 for ; Tue, 25 Sep 2018 10:02:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E887206B6 for ; Tue, 25 Sep 2018 10:02:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7E887206B6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728317AbeIYQJf (ORCPT ); Tue, 25 Sep 2018 12:09:35 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:48244 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726927AbeIYQJf (ORCPT ); Tue, 25 Sep 2018 12:09:35 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id F1ADB80D; Tue, 25 Sep 2018 03:02:47 -0700 (PDT) Received: from localhost (e105922-lin.emea.arm.com [10.4.13.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7368F3F5B3; Tue, 25 Sep 2018 03:02:47 -0700 (PDT) From: Punit Agrawal To: Anshuman Khandual Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, mike.kravetz@oracle.com, mhocko@kernel.org, will.deacon@arm.com, akpm@linux-foundation.org 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> Date: Tue, 25 Sep 2018 11:02:45 +0100 In-Reply-To: <1537841300-6979-1-git-send-email-anshuman.khandual@arm.com> (Anshuman Khandual's message of "Tue, 25 Sep 2018 07:38:20 +0530") Message-ID: <871s9hsxmi.fsf@e105922-lin.cambridge.arm.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Anshuman Khandual writes: > 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 Thanks for adding the encodings. Acked-by: Punit Agrawal > --- > > Changes in V2: > - Updated SHM and MFD definitions per Mike > > 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