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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_2 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 B0DF3C31E40 for ; Tue, 6 Aug 2019 14:07:04 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 8B62620C01 for ; Tue, 6 Aug 2019 14:07:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B62620C01 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 628F7CC8; Tue, 6 Aug 2019 14:07:04 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 94B25CC6 for ; Tue, 6 Aug 2019 14:07:03 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [85.220.165.71]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 2699A82F for ; Tue, 6 Aug 2019 14:07:03 +0000 (UTC) Received: from kresse.hi.pengutronix.de ([2001:67c:670:100:1d::2a]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1hv07A-00031G-2a; Tue, 06 Aug 2019 16:07:00 +0200 Message-ID: <1565100418.2323.32.camel@pengutronix.de> Subject: Re: Regression due to d98849aff879 (dma-direct: handle DMA_ATTR_NO_KERNEL_MAPPING in common code) From: Lucas Stach To: Christoph Hellwig , "Lendacky, Thomas" Date: Tue, 06 Aug 2019 16:06:58 +0200 In-Reply-To: <20190806140408.GA22902@lst.de> References: <1565082809.2323.24.camel@pengutronix.de> <20190806113318.GA20215@lst.de> <41cc93b1-62b5-7fb6-060d-01982e68503b@amd.com> <20190806140408.GA22902@lst.de> X-Mailer: Evolution 3.22.6-1+deb9u2 Mime-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::2a X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: iommu@lists.linux-foundation.org Cc: Halil Pasic , "iommu@lists.linux-foundation.org" , "linux-kernel@vger.kernel.org" X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 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 Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org QW0gRGllbnN0YWcsIGRlbiAwNi4wOC4yMDE5LCAxNjowNCArMDIwMCBzY2hyaWViIENocmlzdG9w aCBIZWxsd2lnOgo+IE9rLCBkb2VzIHRoaXMgd29yaz8KPiAKPiAtLQo+IEZyb20gMzRkMzVmMzM1 YTk4ZjUxNWYyNTE2YjUxNTA1MWUxMmVhZTc0NGM4ZCBNb24gU2VwIDE3IDAwOjAwOjAwIDIwMDEK PiA+IEZyb206IENocmlzdG9waCBIZWxsd2lnIDxoY2hAbHN0LmRlPgo+IERhdGU6IFR1ZSwgNiBB dWcgMjAxOSAxNDozMzoyMyArMDMwMAo+IFN1YmplY3Q6IGRtYS1kaXJlY3Q6IGZpeCBETUFfQVRU Ul9OT19LRVJORUxfTUFQUElORwo+IAo+IFRoZSBuZXcgRE1BX0FUVFJfTk9fS0VSTkVMX01BUFBJ TkcgbmVlZHMgdG8gYWN0dWFsbHkgYXNzaWduCj4gYSBkbWFfYWRkciB0byB3b3JrLsKgwqBBbHNv IHNraXAgaXQgaWYgdGhlIGFyY2hpdGVjdHVyZSBuZWVkcwo+IGZvcmNlZCBkZWNyeXB0aW9uIGhh bmRsaW5nLCBhcyB0aGF0IG5lZWRzIGEga2VybmVsIHZpcnR1YWwKPiBhZGRyZXNzLgo+IAo+IEZp eGVzOiBkOTg4NDlhZmY4NzkgKGRtYS1kaXJlY3Q6IGhhbmRsZSBETUFfQVRUUl9OT19LRVJORUxf TUFQUElORyBpbiBjb21tb24gY29kZSkKPiA+IFNpZ25lZC1vZmYtYnk6IENocmlzdG9waCBIZWxs d2lnIDxoY2hAbHN0LmRlPgo+IC0tLQo+IMKga2VybmVsL2RtYS9kaXJlY3QuYyB8IDQgKysrLQo+ IMKgMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQo+IAo+IGRp ZmYgLS1naXQgYS9rZXJuZWwvZG1hL2RpcmVjdC5jIGIva2VybmVsL2RtYS9kaXJlY3QuYwo+IGlu ZGV4IDU5YmRjZWVhMzczNy4uYjAxMDY0ZDg4NGYyIDEwMDY0NAo+IC0tLSBhL2tlcm5lbC9kbWEv ZGlyZWN0LmMKPiArKysgYi9rZXJuZWwvZG1hL2RpcmVjdC5jCj4gQEAgLTEzMCwxMSArMTMwLDEz IEBAIHZvaWQgKmRtYV9kaXJlY3RfYWxsb2NfcGFnZXMoc3RydWN0IGRldmljZSAqZGV2LCBzaXpl X3Qgc2l6ZSwKPiA+IMKgCWlmICghcGFnZSkKPiA+IMKgCQlyZXR1cm4gTlVMTDsKPiDCoAo+ID4g LQlpZiAoYXR0cnMgJiBETUFfQVRUUl9OT19LRVJORUxfTUFQUElORykgewo+ID4gKwlpZiAoKGF0 dHJzICYgRE1BX0FUVFJfTk9fS0VSTkVMX01BUFBJTkcpICYmCj4gKwnCoMKgwqDCoCFmb3JjZV9k bWFfdW5lbmNyeXB0ZWQoZGV2KSkgewoKZG1hX2RpcmVjdF9mcmVlX3BhZ2VzKCkgdGhlbiBuZWVk cyB0aGUgc2FtZSBjaGVjaywgYXMgb3RoZXJ3aXNlIHRoZSBjcHUKYWRkcmVzcyBpcyB0cmVhdGVk IGFzIGEgY29va2llIGluc3RlYWQgb2YgYSByZWFsIGFkZHJlc3MgYW5kIHRoZQplbmNyeXB0aW9u IG5lZWRzIHRvIGJlIHJlLWVuYWJsZWQuCgpSZWdhcmRzLApMdWNhcwoKPiDCoAkJLyogcmVtb3Zl IGFueSBkaXJ0eSBjYWNoZSBsaW5lcyBvbiB0aGUga2VybmVsIGFsaWFzICovCj4gPiDCoAkJaWYg KCFQYWdlSGlnaE1lbShwYWdlKSkKPiA+IMKgCQkJYXJjaF9kbWFfcHJlcF9jb2hlcmVudChwYWdl LCBzaXplKTsKPiA+IMKgCQkvKiByZXR1cm4gdGhlIHBhZ2UgcG9pbnRlciBhcyB0aGUgb3BhcXVl IGNvb2tpZSAqLwo+ID4gKwkJKmRtYV9oYW5kbGUgPSBwaHlzX3RvX2RtYShkZXYsIHBhZ2VfdG9f cGh5cyhwYWdlKSk7Cj4gPiDCoAkJcmV0dXJuIHBhZ2U7Cj4gPiDCoAl9Cj4gwqAKX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0 CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3Vu ZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11