From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH v6 07/24] IB/umem: use get_user_pages_fast() to pin DMA pages Date: Tue, 19 Nov 2019 00:16:26 -0800 Message-ID: <20191119081643.1866232-8-jhubbard@nvidia.com> References: <20191119081643.1866232-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from hqemgate16.nvidia.com (hqemgate16.nvidia.com [216.228.121.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6C9116ECA3 for ; Tue, 19 Nov 2019 08:16:56 +0000 (UTC) In-Reply-To: <20191119081643.1866232-1-jhubbard@nvidia.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Andrew Morton Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Christoph Hellwig , Jason Gunthorpe , Jason Gunthorpe , Vlastimil Babka , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-media@vger.kernel.org, Shuah Khan , John Hubbard , linux-block@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Al Viro List-Id: dri-devel@lists.freedesktop.org QW5kIGdldCByaWQgb2YgdGhlIG1tYXBfc2VtIGNhbGxzLCBhcyBwYXJ0IG9mIHRoYXQuIE5vdGUK dGhhdCBnZXRfdXNlcl9wYWdlc19mYXN0KCkgd2lsbCwgaWYgbmVjZXNzYXJ5LCBmYWxsIGJhY2sg dG8KX19ndXBfbG9uZ3Rlcm1fdW5sb2NrZWQoKSwgd2hpY2ggdGFrZXMgdGhlIG1tYXBfc2VtIGFz IG5lZWRlZC4KClJldmlld2VkLWJ5OiBKYW4gS2FyYSA8amFja0BzdXNlLmN6PgpSZXZpZXdlZC1i eTogSmFzb24gR3VudGhvcnBlIDxqZ2dAbWVsbGFub3guY29tPgpSZXZpZXdlZC1ieTogSXJhIFdl aW55IDxpcmEud2VpbnlAaW50ZWwuY29tPgpTaWduZWQtb2ZmLWJ5OiBKb2huIEh1YmJhcmQgPGpo dWJiYXJkQG52aWRpYS5jb20+Ci0tLQogZHJpdmVycy9pbmZpbmliYW5kL2NvcmUvdW1lbS5jIHwg MTcgKysrKysrLS0tLS0tLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCA2IGluc2VydGlvbnMoKyksIDEx IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvaW5maW5pYmFuZC9jb3JlL3VtZW0u YyBiL2RyaXZlcnMvaW5maW5pYmFuZC9jb3JlL3VtZW0uYwppbmRleCAyNDI0NGEyZjY4Y2MuLjNk NjY0YTI1MzllYiAxMDA2NDQKLS0tIGEvZHJpdmVycy9pbmZpbmliYW5kL2NvcmUvdW1lbS5jCisr KyBiL2RyaXZlcnMvaW5maW5pYmFuZC9jb3JlL3VtZW0uYwpAQCAtMjcxLDE2ICsyNzEsMTMgQEAg c3RydWN0IGliX3VtZW0gKmliX3VtZW1fZ2V0KHN0cnVjdCBpYl91ZGF0YSAqdWRhdGEsIHVuc2ln bmVkIGxvbmcgYWRkciwKIAlzZyA9IHVtZW0tPnNnX2hlYWQuc2dsOwogCiAJd2hpbGUgKG5wYWdl cykgewotCQlkb3duX3JlYWQoJm1tLT5tbWFwX3NlbSk7Ci0JCXJldCA9IGdldF91c2VyX3BhZ2Vz KGN1cl9iYXNlLAotCQkJCSAgICAgbWluX3QodW5zaWduZWQgbG9uZywgbnBhZ2VzLAotCQkJCQkg ICBQQUdFX1NJWkUgLyBzaXplb2YgKHN0cnVjdCBwYWdlICopKSwKLQkJCQkgICAgIGd1cF9mbGFn cyB8IEZPTExfTE9OR1RFUk0sCi0JCQkJICAgICBwYWdlX2xpc3QsIE5VTEwpOwotCQlpZiAocmV0 IDwgMCkgewotCQkJdXBfcmVhZCgmbW0tPm1tYXBfc2VtKTsKKwkJcmV0ID0gZ2V0X3VzZXJfcGFn ZXNfZmFzdChjdXJfYmFzZSwKKwkJCQkJICBtaW5fdCh1bnNpZ25lZCBsb25nLCBucGFnZXMsCisJ CQkJCQlQQUdFX1NJWkUgLworCQkJCQkJc2l6ZW9mKHN0cnVjdCBwYWdlICopKSwKKwkJCQkJICBn dXBfZmxhZ3MgfCBGT0xMX0xPTkdURVJNLCBwYWdlX2xpc3QpOworCQlpZiAocmV0IDwgMCkKIAkJ CWdvdG8gdW1lbV9yZWxlYXNlOwotCQl9CiAKIAkJY3VyX2Jhc2UgKz0gcmV0ICogUEFHRV9TSVpF OwogCQlucGFnZXMgICAtPSByZXQ7CkBAIC0yODgsOCArMjg1LDYgQEAgc3RydWN0IGliX3VtZW0g KmliX3VtZW1fZ2V0KHN0cnVjdCBpYl91ZGF0YSAqdWRhdGEsIHVuc2lnbmVkIGxvbmcgYWRkciwK IAkJc2cgPSBpYl91bWVtX2FkZF9zZ190YWJsZShzZywgcGFnZV9saXN0LCByZXQsCiAJCQlkbWFf Z2V0X21heF9zZWdfc2l6ZShjb250ZXh0LT5kZXZpY2UtPmRtYV9kZXZpY2UpLAogCQkJJnVtZW0t PnNnX25lbnRzKTsKLQotCQl1cF9yZWFkKCZtbS0+bW1hcF9zZW0pOwogCX0KIAogCXNnX21hcmtf ZW5kKHNnKTsKLS0gCjIuMjQuMAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRl c2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8v ZHJpLWRldmVs 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 A57D0C33CA2 for ; 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Tue, 19 Nov 2019 00:16:56 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 19 Nov 2019 00:16:56 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 19 Nov 2019 00:16:56 -0800 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 19 Nov 2019 08:16:54 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 19 Nov 2019 08:16:54 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Tue, 19 Nov 2019 00:16:53 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v6 07/24] IB/umem: use get_user_pages_fast() to pin DMA pages Date: Tue, 19 Nov 2019 00:16:26 -0800 Message-ID: <20191119081643.1866232-8-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191119081643.1866232-1-jhubbard@nvidia.com> References: <20191119081643.1866232-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Original-DKIM-Signature: v=1; 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Miller" , Mike Kravetz Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Message-ID: <20191119081626.pHwPf87kAbjbEC4K1aF4zQ9e87tFv6agePyIL-NWa4M@z> QW5kIGdldCByaWQgb2YgdGhlIG1tYXBfc2VtIGNhbGxzLCBhcyBwYXJ0IG9mIHRoYXQuIE5vdGUK dGhhdCBnZXRfdXNlcl9wYWdlc19mYXN0KCkgd2lsbCwgaWYgbmVjZXNzYXJ5LCBmYWxsIGJhY2sg dG8KX19ndXBfbG9uZ3Rlcm1fdW5sb2NrZWQoKSwgd2hpY2ggdGFrZXMgdGhlIG1tYXBfc2VtIGFz IG5lZWRlZC4KClJldmlld2VkLWJ5OiBKYW4gS2FyYSA8amFja0BzdXNlLmN6PgpSZXZpZXdlZC1i eTogSmFzb24gR3VudGhvcnBlIDxqZ2dAbWVsbGFub3guY29tPgpSZXZpZXdlZC1ieTogSXJhIFdl aW55IDxpcmEud2VpbnlAaW50ZWwuY29tPgpTaWduZWQtb2ZmLWJ5OiBKb2huIEh1YmJhcmQgPGpo dWJiYXJkQG52aWRpYS5jb20+Ci0tLQogZHJpdmVycy9pbmZpbmliYW5kL2NvcmUvdW1lbS5jIHwg MTcgKysrKysrLS0tLS0tLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCA2IGluc2VydGlvbnMoKyksIDEx IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvaW5maW5pYmFuZC9jb3JlL3VtZW0u YyBiL2RyaXZlcnMvaW5maW5pYmFuZC9jb3JlL3VtZW0uYwppbmRleCAyNDI0NGEyZjY4Y2MuLjNk NjY0YTI1MzllYiAxMDA2NDQKLS0tIGEvZHJpdmVycy9pbmZpbmliYW5kL2NvcmUvdW1lbS5jCisr KyBiL2RyaXZlcnMvaW5maW5pYmFuZC9jb3JlL3VtZW0uYwpAQCAtMjcxLDE2ICsyNzEsMTMgQEAg c3RydWN0IGliX3VtZW0gKmliX3VtZW1fZ2V0KHN0cnVjdCBpYl91ZGF0YSAqdWRhdGEsIHVuc2ln bmVkIGxvbmcgYWRkciwKIAlzZyA9IHVtZW0tPnNnX2hlYWQuc2dsOwogCiAJd2hpbGUgKG5wYWdl cykgewotCQlkb3duX3JlYWQoJm1tLT5tbWFwX3NlbSk7Ci0JCXJldCA9IGdldF91c2VyX3BhZ2Vz KGN1cl9iYXNlLAotCQkJCSAgICAgbWluX3QodW5zaWduZWQgbG9uZywgbnBhZ2VzLAotCQkJCQkg ICBQQUdFX1NJWkUgLyBzaXplb2YgKHN0cnVjdCBwYWdlICopKSwKLQkJCQkgICAgIGd1cF9mbGFn cyB8IEZPTExfTE9OR1RFUk0sCi0JCQkJICAgICBwYWdlX2xpc3QsIE5VTEwpOwotCQlpZiAocmV0 IDwgMCkgewotCQkJdXBfcmVhZCgmbW0tPm1tYXBfc2VtKTsKKwkJcmV0ID0gZ2V0X3VzZXJfcGFn ZXNfZmFzdChjdXJfYmFzZSwKKwkJCQkJICBtaW5fdCh1bnNpZ25lZCBsb25nLCBucGFnZXMsCisJ CQkJCQlQQUdFX1NJWkUgLworCQkJCQkJc2l6ZW9mKHN0cnVjdCBwYWdlICopKSwKKwkJCQkJICBn dXBfZmxhZ3MgfCBGT0xMX0xPTkdURVJNLCBwYWdlX2xpc3QpOworCQlpZiAocmV0IDwgMCkKIAkJ CWdvdG8gdW1lbV9yZWxlYXNlOwotCQl9CiAKIAkJY3VyX2Jhc2UgKz0gcmV0ICogUEFHRV9TSVpF OwogCQlucGFnZXMgICAtPSByZXQ7CkBAIC0yODgsOCArMjg1LDYgQEAgc3RydWN0IGliX3VtZW0g KmliX3VtZW1fZ2V0KHN0cnVjdCBpYl91ZGF0YSAqdWRhdGEsIHVuc2lnbmVkIGxvbmcgYWRkciwK IAkJc2cgPSBpYl91bWVtX2FkZF9zZ190YWJsZShzZywgcGFnZV9saXN0LCByZXQsCiAJCQlkbWFf Z2V0X21heF9zZWdfc2l6ZShjb250ZXh0LT5kZXZpY2UtPmRtYV9kZXZpY2UpLAogCQkJJnVtZW0t PnNnX25lbnRzKTsKLQotCQl1cF9yZWFkKCZtbS0+bW1hcF9zZW0pOwogCX0KIAogCXNnX21hcmtf ZW5kKHNnKTsKLS0gCjIuMjQuMAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRl c2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8v ZHJpLWRldmVs