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Thu, 5 Nov 2020 17:08:20 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PTvEMzqR5sn2 for ; Thu, 5 Nov 2020 17:08:20 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 01D9D854DB for ; Thu, 5 Nov 2020 17:08:19 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id E83EA68B02; Thu, 5 Nov 2020 18:08:16 +0100 (CET) Date: Thu, 5 Nov 2020 18:08:16 +0100 From: Christoph Hellwig To: Jason Gunthorpe Subject: Re: [PATCH 4/6] PCI/P2PDMA: Remove the DMA_VIRT_OPS hacks Message-ID: <20201105170816.GC7502@lst.de> References: <20201105074205.1690638-1-hch@lst.de> <20201105074205.1690638-5-hch@lst.de> <20201105143418.GA4142106@ziepe.ca> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201105143418.GA4142106@ziepe.ca> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Zhu Yanjun , Dennis Dalessandro , linux-rdma@vger.kernel.org, linux-pci@vger.kernel.org, Mike Marciniszyn , iommu@lists.linux-foundation.org, Bjorn Helgaas , Bernard Metzler , Logan Gunthorpe , Christoph Hellwig 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" T24gVGh1LCBOb3YgMDUsIDIwMjAgYXQgMTA6MzQ6MThBTSAtMDQwMCwgSmFzb24gR3VudGhvcnBl IHdyb3RlOgo+IFRoZSBjaGVjayBpcyByZW1vdmVkIGhlcmUsIGJ1dCBJIGRpZG4ndCBzZWUgYSBt YXRjaGluZyBjaGVjayBhZGRlZCB0bwo+IHRoZSBJQiBzaWRlPyBTb21ldGhpbmcgbGlrZToKPiAK PiBzdGF0aWMgaW50IHJkbWFfcndfbWFwX3NnKHN0cnVjdCBpYl9kZXZpY2UgKmRldiwgc3RydWN0 IHNjYXR0ZXJsaXN0ICpzZywKPiAJCQkgIHUzMiBzZ19jbnQsIGVudW0gZG1hX2RhdGFfZGlyZWN0 aW9uIGRpcikKPiB7Cj4gCWlmIChpc19wY2lfcDJwZG1hX3BhZ2Uoc2dfcGFnZShzZykpKSB7Cj4g CQlpZiAoaWJfdXNlc192aXJ0X2RtYShkZXYpKQo+IAkJCXJldHVybiAwOwo+IAkJcmV0dXJuIHBj aV9wMnBkbWFfbWFwX3NnKGRldi0+ZG1hX2RldmljZSwgc2csIHNnX2NudCwgZGlyKTsKPiAJfQo+ IAlyZXR1cm4gaWJfZG1hX21hcF9zZyhkZXYsIHNnLCBzZ19jbnQsIGRpcik7Cj4gfQoKV2Ugc2hv dWxkIG5ldmVyIGdldCBhIFAyUCBwYWdlIGludG8gdGhlIHJkbWFfcndfbWFwX3NnIG9yIG90aGVy IGliX2RtYSoKcm91dGluZXMgZm9yIHRoZSBzb2Z0d2FyZSBkcml2ZXJzLCBhcyB0aGVpciBzdHJ1 Y3QgZGV2aWNlcyBkb24ndCBjb25uZWN0CnRvIGEgUEPQhiBkZXZpY2UgdW5kZXJuZWF0aCwgYW5k IHRodXMgbm8gdmFsaWQgUDJQIGRpc3RhbmNlIGNhbiBiZQpyZXRvdXJuZWQuICBUaGF0IGJlaW5n IHNhaWQgSUZGIHdlIHdhbnQgdG8gaW1wbGVtZW50IFAyUCBmb3IgdGhvc2UKd2UnZCBuZWVkIHNv bWV0aGlnbiBsaWtlIHRoZSBhYm92ZSBjaGVjaywgZXhjZXB0IHRoYXQgd2Ugc3RpbGwgbmVlZAp0 byBjYWwgaWJfZG1hX21hcF9zZywgaS5lLjoKCnN0YXRpYyBpbnQgcmRtYV9yd19tYXBfc2coc3Ry dWN0IGliX2RldmljZSAqZGV2LCBzdHJ1Y3Qgc2NhdHRlcmxpc3QgKnNnLAogCQkJICB1MzIgc2df Y250LCBlbnVtIGRtYV9kYXRhX2RpcmVjdGlvbiBkaXIpCnsKCWlmIChpc19wY2lfcDJwZG1hX3Bh Z2Uoc2dfcGFnZShzZykpICYmICFpYl91c2VzX3ZpcnRfZG1hKGRldikpCgkJcmV0dXJuIHBjaV9w MnBkbWFfbWFwX3NnKGRldi0+ZG1hX2RldmljZSwgc2csIHNnX2NudCwgZGlyKTsKCXJldHVybiBp Yl9kbWFfbWFwX3NnKGRldiwgc2csIHNnX2NudCwgZGlyKTsKfQpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlz dHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3Jn L21haWxtYW4vbGlzdGluZm8vaW9tbXU=