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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 7769AC433EF for ; Thu, 16 Sep 2021 23:41:20 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 324ED6120D for ; Thu, 16 Sep 2021 23:41:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 324ED6120D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=deltatee.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 2FEA44049E; Thu, 16 Sep 2021 23:41:19 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ELoRh8zONoYq; Thu, 16 Sep 2021 23:41:18 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp2.osuosl.org (Postfix) with ESMTPS id B1A984049D; Thu, 16 Sep 2021 23:41:17 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8C5DAC001E; Thu, 16 Sep 2021 23:41:17 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 7A7CDC0011 for ; Thu, 16 Sep 2021 23:41:15 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 5BF5361407 for ; Thu, 16 Sep 2021 23:41:15 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp3.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=deltatee.com Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id O1l3mzJxNhgy for ; Thu, 16 Sep 2021 23:41:14 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from ale.deltatee.com (ale.deltatee.com [204.191.154.188]) by smtp3.osuosl.org (Postfix) with ESMTPS id AC853608ED for ; Thu, 16 Sep 2021 23:41:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:References:In-Reply-To: Message-Id:Date:Cc:To:From:content-disposition; bh=8bOXOFnckmEc8LCJ9PH0f4LyphVDIcC24zx3B6oadvQ=; b=RFVdJzEG1LYX/cCVSoDTFqrqzO eWbPdYWb6JTWgxd1VH8508Ykwd0ArTzEQflE+Zf39KsZT9V44tJlNZw1MlNDh1hGjxjce55nxShDO X/F436UI2JS6/1dTCeIfETkJCAsaFHpRzZm6+NPQz/uAWz5V8vOZbLFY5Qiz6QpbF+jkldK5QYtF1 gQOyJeepovW7eyPIRZWyBJDz7xMCCcf/+Do9AeM4IG5nlQyYeXPmFJ+XU8umkONBVEMIJdLUc1ZAz 1GKlO8AgAHAE0o1zX1N4kppCztLqedObZwWaCeAcEEUSw7bDG8VKfc1vq1+4pA1jClAbKym8zA+Dv EySiIlGg==; Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mR107-0008I0-JT; Thu, 16 Sep 2021 17:41:08 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.94.2) (envelope-from ) id 1mR103-000Vqp-JU; Thu, 16 Sep 2021 17:41:03 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org Date: Thu, 16 Sep 2021 17:40:41 -0600 Message-Id: <20210916234100.122368-2-logang@deltatee.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210916234100.122368-1-logang@deltatee.com> References: <20210916234100.122368-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, sbates@raithlin.com, hch@lst.de, jgg@ziepe.ca, christian.koenig@amd.com, jhubbard@nvidia.com, ddutile@redhat.com, willy@infradead.org, daniel.vetter@ffwll.ch, jason@jlekstrand.net, dave.hansen@linux.intel.com, helgaas@kernel.org, dan.j.williams@intel.com, andrzej.jakowski@intel.com, dave.b.minturn@intel.com, jianxin.xiong@intel.com, ira.weiny@intel.com, robin.murphy@arm.com, martin.oliveira@eideticom.com, ckulkarnilinux@gmail.com, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v3 01/20] lib/scatterlist: add flag for indicating P2PDMA segments in an SGL X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Cc: Minturn Dave B , Martin Oliveira , Ira Weiny , John Hubbard , Dave Hansen , Robin Murphy , Matthew Wilcox , =?UTF-8?q?Christian=20K=C3=B6nig?= , Jason Gunthorpe , Logan Gunthorpe , Chaitanya Kulkarni , Jason Ekstrand , Daniel Vetter , Bjorn Helgaas , Dan Williams , Stephen Bates , Jakowski Andrzej , Christoph Hellwig , Xiong Jianxin X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" TWFrZSB1c2Ugb2YgdGhlIHRoaXJkIGZyZWUgTFNCIGluIHNjYXR0ZXJsaXN0J3MgcGFnZV9saW5r IG9uIDY0Yml0IHN5c3RlbXMuCgpUaGUgZXh0cmEgYml0IHdpbGwgYmUgdXNlZCBieSBkbWFfW3Vu XW1hcF9zZ19wMnBkbWEoKSB0byBkZXRlcm1pbmUgd2hlbiBhCmdpdmVuIFNHTCBzZWdtZW50cyBk bWFfYWRkcmVzcyBwb2ludHMgdG8gYSBQQ0kgYnVzIGFkZHJlc3MuCmRtYV91bm1hcF9zZ19wMnBk bWEoKSB3aWxsIG5lZWQgdG8gcGVyZm9ybSBkaWZmZXJlbnQgY2xlYW51cCB3aGVuIGEKc2VnbWVu dCBpcyBtYXJrZWQgYXMgUDJQRE1BLgoKVXNpbmcgdGhpcyBiaXQgcmVxdWlyZXMgYWRkaW5nIGFu IGFkZGl0aW9uYWwgZGVwZW5kZW5jeSBvbiBDT05GSUdfNjRCSVQgdG8KQ09ORklHX1BDSV9QMlBE TUEuIFRoaXMgc2hvdWxkIGJlIGFjY2VwdGFibGUgYXMgdGhlIG1ham9yaXR5IG9mIFAyUERNQQp1 c2UgY2FzZXMgYXJlIHJlc3RyaWN0ZWQgdG8gbmV3ZXIgcm9vdCBjb21wbGV4ZXMgYW5kIHJvdWdo bHkgcmVxdWlyZSB0aGUKZXh0cmEgYWRkcmVzcyBzcGFjZSBmb3IgbWVtb3J5IEJBUnMgdXNlZCBp biB0aGUgdHJhbnNhY3Rpb25zLgoKU2lnbmVkLW9mZi1ieTogTG9nYW4gR3VudGhvcnBlIDxsb2dh bmdAZGVsdGF0ZWUuY29tPgpSZXZpZXdlZC1ieTogSm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlk aWEuY29tPgotLS0KIGRyaXZlcnMvcGNpL0tjb25maWcgICAgICAgICB8ICAyICstCiBpbmNsdWRl L2xpbnV4L3NjYXR0ZXJsaXN0LmggfCA1MCArKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrLS0tCiAyIGZpbGVzIGNoYW5nZWQsIDQ3IGluc2VydGlvbnMoKyksIDUgZGVsZXRpb25zKC0p CgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9wY2kvS2NvbmZpZyBiL2RyaXZlcnMvcGNpL0tjb25maWcK aW5kZXggMGM0NzNkNzVlNjI1Li45MGI0YmRkYjMzMDAgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvcGNp L0tjb25maWcKKysrIGIvZHJpdmVycy9wY2kvS2NvbmZpZwpAQCAtMTYzLDcgKzE2Myw3IEBAIGNv bmZpZyBQQ0lfUEFTSUQKIAogY29uZmlnIFBDSV9QMlBETUEKIAlib29sICJQQ0kgcGVlci10by1w ZWVyIHRyYW5zZmVyIHN1cHBvcnQiCi0JZGVwZW5kcyBvbiBaT05FX0RFVklDRQorCWRlcGVuZHMg b24gWk9ORV9ERVZJQ0UgJiYgNjRCSVQKIAlzZWxlY3QgR0VORVJJQ19BTExPQ0FUT1IKIAloZWxw CiAJICBFbmFibGXRlSBkcml2ZXJzIHRvIGRvIFBDSSBwZWVyLXRvLXBlZXIgdHJhbnNhY3Rpb25z IHRvIGFuZCBmcm9tCmRpZmYgLS1naXQgYS9pbmNsdWRlL2xpbnV4L3NjYXR0ZXJsaXN0LmggYi9p bmNsdWRlL2xpbnV4L3NjYXR0ZXJsaXN0LmgKaW5kZXggMjY2NzU0YTU1MzI3Li5lNjJiMWNmNjM4 NmYgMTAwNjQ0Ci0tLSBhL2luY2x1ZGUvbGludXgvc2NhdHRlcmxpc3QuaAorKysgYi9pbmNsdWRl L2xpbnV4L3NjYXR0ZXJsaXN0LmgKQEAgLTY0LDYgKzY0LDIxIEBAIHN0cnVjdCBzZ19hcHBlbmRf dGFibGUgewogI2RlZmluZSBTR19DSEFJTgkweDAxVUwKICNkZWZpbmUgU0dfRU5ECQkweDAyVUwK IAorLyoKKyAqIGJpdCAyIGlzIHRoZSB0aGlyZCBmcmVlIGJpdCBpbiB0aGUgcGFnZV9saW5rIG9u IDY0Yml0IHN5c3RlbXMgd2hpY2gKKyAqIGlzIHVzZWQgYnkgZG1hX3VubWFwX3NnKCkgdG8gZGV0 ZXJtaW5lIGlmIHRoZSBkbWFfYWRkcmVzcyBpcyBhIFBDSQorICogYnVzIGFkZHJlc3Mgd2hlbiBk b2luZyBQMlBETUEuCisgKiBOb3RlOiBDT05GSUdfUENJX1AyUERNQSBkZXBlbmRzIG9uIENPTkZJ R182NEJJVCBiZWNhdXNlIG9mIHRoaXMuCisgKi8KKworI2lmZGVmIENPTkZJR19QQ0lfUDJQRE1B CisjZGVmaW5lIFNHX0RNQV9QQ0lfUDJQRE1BCTB4MDRVTAorI2Vsc2UKKyNkZWZpbmUgU0dfRE1B X1BDSV9QMlBETUEJMHgwMFVMCisjZW5kaWYKKworI2RlZmluZSBTR19QQUdFX0xJTktfTUFTSyAo U0dfQ0hBSU4gfCBTR19FTkQgfCBTR19ETUFfUENJX1AyUERNQSkKKwogLyoKICAqIFdlIG92ZXJs b2FkIHRoZSBMU0Igb2YgdGhlIHBhZ2UgcG9pbnRlciB0byBpbmRpY2F0ZSB3aGV0aGVyIGl0J3MK ICAqIGEgdmFsaWQgc2cgZW50cnksIG9yIHdoZXRoZXIgaXQgcG9pbnRzIHRvIHRoZSBzdGFydCBv ZiBhIG5ldyBzY2F0dGVybGlzdC4KQEAgLTcyLDcgKzg3LDkgQEAgc3RydWN0IHNnX2FwcGVuZF90 YWJsZSB7CiAjZGVmaW5lIHNnX2lzX2NoYWluKHNnKQkJKChzZyktPnBhZ2VfbGluayAmIFNHX0NI QUlOKQogI2RlZmluZSBzZ19pc19sYXN0KHNnKQkJKChzZyktPnBhZ2VfbGluayAmIFNHX0VORCkK ICNkZWZpbmUgc2dfY2hhaW5fcHRyKHNnKQlcCi0JKChzdHJ1Y3Qgc2NhdHRlcmxpc3QgKikgKChz ZyktPnBhZ2VfbGluayAmIH4oU0dfQ0hBSU4gfCBTR19FTkQpKSkKKwkoKHN0cnVjdCBzY2F0dGVy bGlzdCAqKSgoc2cpLT5wYWdlX2xpbmsgJiB+U0dfUEFHRV9MSU5LX01BU0spKQorCisjZGVmaW5l IHNnX2lzX2RtYV9wY2lfcDJwZG1hKHNnKSAoKHNnKS0+cGFnZV9saW5rICYgU0dfRE1BX1BDSV9Q MlBETUEpCiAKIC8qKgogICogc2dfYXNzaWduX3BhZ2UgLSBBc3NpZ24gYSBnaXZlbiBwYWdlIHRv IGFuIFNHIGVudHJ5CkBAIC04NiwxMyArMTAzLDEzIEBAIHN0cnVjdCBzZ19hcHBlbmRfdGFibGUg ewogICoqLwogc3RhdGljIGlubGluZSB2b2lkIHNnX2Fzc2lnbl9wYWdlKHN0cnVjdCBzY2F0dGVy bGlzdCAqc2csIHN0cnVjdCBwYWdlICpwYWdlKQogewotCXVuc2lnbmVkIGxvbmcgcGFnZV9saW5r ID0gc2ctPnBhZ2VfbGluayAmIChTR19DSEFJTiB8IFNHX0VORCk7CisJdW5zaWduZWQgbG9uZyBw YWdlX2xpbmsgPSBzZy0+cGFnZV9saW5rICYgU0dfUEFHRV9MSU5LX01BU0s7CiAKIAkvKgogCSAq IEluIG9yZGVyIGZvciB0aGUgbG93IGJpdCBzdGVhbGluZyBhcHByb2FjaCB0byB3b3JrLCBwYWdl cwogCSAqIG11c3QgYmUgYWxpZ25lZCBhdCBhIDMyLWJpdCBib3VuZGFyeSBhcyBhIG1pbmltdW0u CiAJICovCi0JQlVHX09OKCh1bnNpZ25lZCBsb25nKSBwYWdlICYgKFNHX0NIQUlOIHwgU0dfRU5E KSk7CisJQlVHX09OKCh1bnNpZ25lZCBsb25nKXBhZ2UgJiBTR19QQUdFX0xJTktfTUFTSyk7CiAj aWZkZWYgQ09ORklHX0RFQlVHX1NHCiAJQlVHX09OKHNnX2lzX2NoYWluKHNnKSk7CiAjZW5kaWYK QEAgLTEyNiw3ICsxNDMsNyBAQCBzdGF0aWMgaW5saW5lIHN0cnVjdCBwYWdlICpzZ19wYWdlKHN0 cnVjdCBzY2F0dGVybGlzdCAqc2cpCiAjaWZkZWYgQ09ORklHX0RFQlVHX1NHCiAJQlVHX09OKHNn X2lzX2NoYWluKHNnKSk7CiAjZW5kaWYKLQlyZXR1cm4gKHN0cnVjdCBwYWdlICopKChzZyktPnBh Z2VfbGluayAmIH4oU0dfQ0hBSU4gfCBTR19FTkQpKTsKKwlyZXR1cm4gKHN0cnVjdCBwYWdlICop KChzZyktPnBhZ2VfbGluayAmIH5TR19QQUdFX0xJTktfTUFTSyk7CiB9CiAKIC8qKgpAQCAtMjI4 LDYgKzI0NSwzMSBAQCBzdGF0aWMgaW5saW5lIHZvaWQgc2dfdW5tYXJrX2VuZChzdHJ1Y3Qgc2Nh dHRlcmxpc3QgKnNnKQogCXNnLT5wYWdlX2xpbmsgJj0gflNHX0VORDsKIH0KIAorLyoqCisgKiBz Z19kbWFfbWFya19wY2lfcDJwZG1hIC0gTWFyayB0aGUgc2NhdHRlcmxpc3QgZW50cnkgZm9yIFBD SSBwMnBkbWEKKyAqIEBzZzoJCSBTRyBlbnRyeVNjYXR0ZXJsaXN0CisgKgorICogRGVzY3JpcHRp b246CisgKiAgIE1hcmtzIHRoZSBwYXNzZWQgaW4gc2cgZW50cnkgdG8gaW5kaWNhdGUgdGhhdCB0 aGUgZG1hX2FkZHJlc3MgaXMKKyAqICAgYSBQQ0kgYnVzIGFkZHJlc3MuCisgKiovCitzdGF0aWMg aW5saW5lIHZvaWQgc2dfZG1hX21hcmtfcGNpX3AycGRtYShzdHJ1Y3Qgc2NhdHRlcmxpc3QgKnNn KQoreworCXNnLT5wYWdlX2xpbmsgfD0gU0dfRE1BX1BDSV9QMlBETUE7Cit9CisKKy8qKgorICog c2dfdW5tYXJrX3BjaV9wMnBkbWEgLSBVbm1hcmsgdGhlIHNjYXR0ZXJsaXN0IGVudHJ5IGZvciBQ Q0kgcDJwZG1hCisgKiBAc2c6CQkgU0cgZW50cnlTY2F0dGVybGlzdAorICoKKyAqIERlc2NyaXB0 aW9uOgorICogICBDbGVhcnMgdGhlIFBDSSBQMlBETUEgbWFyaworICoqLworc3RhdGljIGlubGlu ZSB2b2lkIHNnX2RtYV91bm1hcmtfcGNpX3AycGRtYShzdHJ1Y3Qgc2NhdHRlcmxpc3QgKnNnKQor eworCXNnLT5wYWdlX2xpbmsgJj0gflNHX0RNQV9QQ0lfUDJQRE1BOworfQorCiAvKioKICAqIHNn X3BoeXMgLSBSZXR1cm4gcGh5c2ljYWwgYWRkcmVzcyBvZiBhbiBzZyBlbnRyeQogICogQHNnOgkg ICAgIFNHIGVudHJ5Ci0tIAoyLjMwLjIKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21tdUBsaXN0cy5saW51eC1mb3Vu ZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0 aW5mby9pb21tdQ==