From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH v6 13/24] mm/process_vm_access: set FOLL_PIN via pin_user_pages_remote() Date: Tue, 19 Nov 2019 00:16:32 -0800 Message-ID: <20191119081643.1866232-14-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 hqemgate14.nvidia.com (hqemgate14.nvidia.com [216.228.121.143]) by gabe.freedesktop.org (Postfix) with ESMTPS id 55FDD6EC7D for ; Tue, 19 Nov 2019 08:17:03 +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 , 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 , Dan Williams List-Id: dri-devel@lists.freedesktop.org Q29udmVydCBwcm9jZXNzX3ZtX2FjY2VzcyB0byB1c2UgdGhlIG5ldyBwaW5fdXNlcl9wYWdlc19y ZW1vdGUoKQpjYWxsLCB3aGljaCBzZXRzIEZPTExfUElOLiBTZXR0aW5nIEZPTExfUElOIGlzIG5v dyByZXF1aXJlZCBmb3IKY29kZSB0aGF0IHJlcXVpcmVzIHRyYWNraW5nIG9mIHBpbm5lZCBwYWdl cy4KCkFsc28sIHJlbGVhc2UgdGhlIHBhZ2VzIHZpYSBwdXRfdXNlcl9wYWdlKigpLgoKQWxzbywg cmVuYW1lICJwYWdlcyIgdG8gInBpbm5lZF9wYWdlcyIsIGFzIHRoaXMgbWFrZXMgZm9yCmVhc2ll ciByZWFkaW5nIG9mIHByb2Nlc3Nfdm1fcndfc2luZ2xlX3ZlYygpLgoKUmV2aWV3ZWQtYnk6IEph biBLYXJhIDxqYWNrQHN1c2UuY3o+ClJldmlld2VkLWJ5OiBKw6lyw7RtZSBHbGlzc2UgPGpnbGlz 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X19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5v cmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2 ZWw= 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 68479C33CA1 for ; Tue, 19 Nov 2019 08:17:25 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4578422316 for ; Tue, 19 Nov 2019 08:17:25 +0000 (UTC) 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Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 19 Nov 2019 08:17:02 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 19 Nov 2019 08:17:01 +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 00:17:01 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v6 13/24] mm/process_vm_access: set FOLL_PIN via pin_user_pages_remote() Date: Tue, 19 Nov 2019 00:16:32 -0800 Message-ID: <20191119081643.1866232-14-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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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 , 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 , Dan Williams , Mauro Carvalho Chehab , Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S . 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: <20191119081632.r63cfUoPa9KMEtTS1QBEx_D24GsR04LWuZCPg35LW_U@z> Q29udmVydCBwcm9jZXNzX3ZtX2FjY2VzcyB0byB1c2UgdGhlIG5ldyBwaW5fdXNlcl9wYWdlc19y ZW1vdGUoKQpjYWxsLCB3aGljaCBzZXRzIEZPTExfUElOLiBTZXR0aW5nIEZPTExfUElOIGlzIG5v dyByZXF1aXJlZCBmb3IKY29kZSB0aGF0IHJlcXVpcmVzIHRyYWNraW5nIG9mIHBpbm5lZCBwYWdl cy4KCkFsc28sIHJlbGVhc2UgdGhlIHBhZ2VzIHZpYSBwdXRfdXNlcl9wYWdlKigpLgoKQWxzbywg cmVuYW1lICJwYWdlcyIgdG8gInBpbm5lZF9wYWdlcyIsIGFzIHRoaXMgbWFrZXMgZm9yCmVhc2ll ciByZWFkaW5nIG9mIHByb2Nlc3Nfdm1fcndfc2luZ2xlX3ZlYygpLgoKUmV2aWV3ZWQtYnk6IEph biBLYXJhIDxqYWNrQHN1c2UuY3o+ClJldmlld2VkLWJ5OiBKw6lyw7RtZSBHbGlzc2UgPGpnbGlz c2VAcmVkaGF0LmNvbT4KUmV2aWV3ZWQtYnk6IElyYSBXZWlueSA8aXJhLndlaW55QGludGVsLmNv bT4KU2lnbmVkLW9mZi1ieTogSm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlkaWEuY29tPgotLS0K IG1tL3Byb2Nlc3Nfdm1fYWNjZXNzLmMgfCAyOCArKysrKysrKysrKysrKystLS0tLS0tLS0tLS0t CiAxIGZpbGUgY2hhbmdlZCwgMTUgaW5zZXJ0aW9ucygrKSwgMTMgZGVsZXRpb25zKC0pCgpkaWZm IC0tZ2l0IGEvbW0vcHJvY2Vzc192bV9hY2Nlc3MuYyBiL21tL3Byb2Nlc3Nfdm1fYWNjZXNzLmMK aW5kZXggMzU3YWE3YmVmNmMwLi5mZDIwYWI2NzViODUgMTAwNjQ0Ci0tLSBhL21tL3Byb2Nlc3Nf dm1fYWNjZXNzLmMKKysrIGIvbW0vcHJvY2Vzc192bV9hY2Nlc3MuYwpAQCAtNDIsMTIgKzQyLDEx IEBAIHN0YXRpYyBpbnQgcHJvY2Vzc192bV9yd19wYWdlcyhzdHJ1Y3QgcGFnZSAqKnBhZ2VzLAog CQlpZiAoY29weSA+IGxlbikKIAkJCWNvcHkgPSBsZW47CiAKLQkJaWYgKHZtX3dyaXRlKSB7CisJ CWlmICh2bV93cml0ZSkKIAkJCWNvcGllZCA9IGNvcHlfcGFnZV9mcm9tX2l0ZXIocGFnZSwgb2Zm c2V0LCBjb3B5LCBpdGVyKTsKLQkJCXNldF9wYWdlX2RpcnR5X2xvY2socGFnZSk7Ci0JCX0gZWxz ZSB7CisJCWVsc2UKIAkJCWNvcGllZCA9IGNvcHlfcGFnZV90b19pdGVyKHBhZ2UsIG9mZnNldCwg Y29weSwgaXRlcik7Ci0JCX0KKwogCQlsZW4gLT0gY29waWVkOwogCQlpZiAoY29waWVkIDwgY29w eSAmJiBpb3ZfaXRlcl9jb3VudChpdGVyKSkKIAkJCXJldHVybiAtRUZBVUxUOwpAQCAtOTYsNyAr OTUsNyBAQCBzdGF0aWMgaW50IHByb2Nlc3Nfdm1fcndfc2luZ2xlX3ZlYyh1bnNpZ25lZCBsb25n IGFkZHIsCiAJCWZsYWdzIHw9IEZPTExfV1JJVEU7CiAKIAl3aGlsZSAoIXJjICYmIG5yX3BhZ2Vz ICYmIGlvdl9pdGVyX2NvdW50KGl0ZXIpKSB7Ci0JCWludCBwYWdlcyA9IG1pbihucl9wYWdlcywg bWF4X3BhZ2VzX3Blcl9sb29wKTsKKwkJaW50IHBpbm5lZF9wYWdlcyA9IG1pbihucl9wYWdlcywg bWF4X3BhZ2VzX3Blcl9sb29wKTsKIAkJaW50IGxvY2tlZCA9IDE7CiAJCXNpemVfdCBieXRlczsK IApAQCAtMTA2LDE0ICsxMDUsMTUgQEAgc3RhdGljIGludCBwcm9jZXNzX3ZtX3J3X3NpbmdsZV92 ZWModW5zaWduZWQgbG9uZyBhZGRyLAogCQkgKiBjdXJyZW50L2N1cnJlbnQtPm1tCiAJCSAqLwog CQlkb3duX3JlYWQoJm1tLT5tbWFwX3NlbSk7Ci0JCXBhZ2VzID0gZ2V0X3VzZXJfcGFnZXNfcmVt b3RlKHRhc2ssIG1tLCBwYSwgcGFnZXMsIGZsYWdzLAotCQkJCQkgICAgICBwcm9jZXNzX3BhZ2Vz LCBOVUxMLCAmbG9ja2VkKTsKKwkJcGlubmVkX3BhZ2VzID0gcGluX3VzZXJfcGFnZXNfcmVtb3Rl KHRhc2ssIG1tLCBwYSwgcGlubmVkX3BhZ2VzLAorCQkJCQkJICAgICBmbGFncywgcHJvY2Vzc19w YWdlcywKKwkJCQkJCSAgICAgTlVMTCwgJmxvY2tlZCk7CiAJCWlmIChsb2NrZWQpCiAJCQl1cF9y ZWFkKCZtbS0+bW1hcF9zZW0pOwotCQlpZiAocGFnZXMgPD0gMCkKKwkJaWYgKHBpbm5lZF9wYWdl cyA8PSAwKQogCQkJcmV0dXJuIC1FRkFVTFQ7CiAKLQkJYnl0ZXMgPSBwYWdlcyAqIFBBR0VfU0la RSAtIHN0YXJ0X29mZnNldDsKKwkJYnl0ZXMgPSBwaW5uZWRfcGFnZXMgKiBQQUdFX1NJWkUgLSBz dGFydF9vZmZzZXQ7CiAJCWlmIChieXRlcyA+IGxlbikKIAkJCWJ5dGVzID0gbGVuOwogCkBAIC0x MjIsMTAgKzEyMiwxMiBAQCBzdGF0aWMgaW50IHByb2Nlc3Nfdm1fcndfc2luZ2xlX3ZlYyh1bnNp Z25lZCBsb25nIGFkZHIsCiAJCQkJCSB2bV93cml0ZSk7CiAJCWxlbiAtPSBieXRlczsKIAkJc3Rh cnRfb2Zmc2V0ID0gMDsKLQkJbnJfcGFnZXMgLT0gcGFnZXM7Ci0JCXBhICs9IHBhZ2VzICogUEFH RV9TSVpFOwotCQl3aGlsZSAocGFnZXMpCi0JCQlwdXRfcGFnZShwcm9jZXNzX3BhZ2VzWy0tcGFn ZXNdKTsKKwkJbnJfcGFnZXMgLT0gcGlubmVkX3BhZ2VzOworCQlwYSArPSBwaW5uZWRfcGFnZXMg KiBQQUdFX1NJWkU7CisKKwkJLyogSWYgdm1fd3JpdGUgaXMgc2V0LCB0aGUgcGFnZXMgbmVlZCB0 byBiZSBtYWRlIGRpcnR5OiAqLworCQlwdXRfdXNlcl9wYWdlc19kaXJ0eV9sb2NrKHByb2Nlc3Nf cGFnZXMsIHBpbm5lZF9wYWdlcywKKwkJCQkJICB2bV93cml0ZSk7CiAJfQogCiAJcmV0dXJuIHJj OwotLSAKMi4yNC4wCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5v cmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2 ZWw=