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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 455D2186B; Sat, 3 Aug 2019 06:50:36 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id AE0221837 for ; Sat, 3 Aug 2019 06:48:18 +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 smtp1.linuxfoundation.org (Postfix) with ESMTPS id 370D1712 for ; Sat, 3 Aug 2019 06:48:18 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id 3208868BFE; Sat, 3 Aug 2019 08:48:13 +0200 (CEST) Date: Sat, 3 Aug 2019 08:48:12 +0200 From: Christoph Hellwig To: Will Deacon Subject: Re: [PATCH] dma-mapping: fix page attributes for dma_mmap_* Message-ID: <20190803064812.GA29746@lst.de> References: <20190801142118.21225-1-hch@lst.de> <20190801142118.21225-2-hch@lst.de> <20190801162305.3m32chycsdjmdejk@willie-the-truck> <20190801163457.GB26588@lst.de> <20190801164411.kmsl4japtfkgvzxe@willie-the-truck> <20190802081441.GA9725@lst.de> <20190802103803.3qrbhqwxlasojsco@willie-the-truck> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190802103803.3qrbhqwxlasojsco@willie-the-truck> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Shawn Anastasio , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Russell King , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Catalin Marinas , Robin Murphy , Christoph Hellwig , linux-arm-kernel@lists.infradead.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 T24gRnJpLCBBdWcgMDIsIDIwMTkgYXQgMTE6Mzg6MDNBTSArMDEwMCwgV2lsbCBEZWFjb24gd3Jv dGU6Cj4gCj4gU28gdGhpcyBib2lscyBkb3duIHRvIGEgdGVybWlub2xvZ3kgbWlzbWF0Y2guIFRo ZSBBcm0gYXJjaGl0ZWN0dXJlIGRvZXNuJ3QgaGF2ZQo+IGFueXRoaW5nIGNhbGxlZCAid3JpdGUg Y29tYmluZSIsIHNvIGluIExpbnV4IHdlIGluc3RlYWQgcHJvdmlkZSB3aGF0IHRoZSBBcm0KPiBh cmNoaXRlY3R1cmUgY2FsbHMgIk5vcm1hbCBub24tY2FjaGVhYmxlIiBtZW1vcnkgZm9yIHBncHJv dF93cml0ZWNvbWJpbmUoKS4KPiBBbW9uZ3N0IG90aGVyIHRoaW5ncywgdGhpcyBtZW1vcnkgdHlw ZSBwZXJtaXRzIHNwZWN1bGF0aW9uLCB1bmFsaWduZWQgYWNjZXNzZXMKPiBhbmQgbWVyZ2luZyBv ZiB3cml0ZXMuIEkgZm91bmQgc29tZXRoaW5nIGluIHRoZSBhcmNoaXRlY3R1cmUgc3BlYyBhYm91 dAo+IG5vbi1jYWNoYWJsZSBtZW1vcnksIGJ1dCBpdCdzIHdyaXR0ZW4gaW4gQXJtZ2xpc2hbMV0u Cj4gCj4gcGdwcm90X25vbmNhY2hlZCgpLCBvbiB0aGUgb3RoZXIgaGFuZCwgcHJvdmlkZXMgd2hh dCB0aGUgYXJjaGl0ZWN0dXJlIGNhbGxzCj4gU3Ryb25nbHkgT3JkZXJlZCBvciBEZXZpY2Utbkdu Um5FIG1lbW9yeS4gVGhpcyBpcyBpbnRlbmRlZCBmb3IgbWFwcGluZyBNTUlPCj4gKGkuZS4gUENJ IGNvbmZpZyBzcGFjZSkgYW5kIHRoZXJlZm9yZSBmb3JiaWRzIHNwZWN1bGF0aW9uLCBwcmVzZXJ2 ZXMgYWNjZXNzCj4gc2l6ZSwgcmVxdWlyZXMgc3RyaWN0IGFsaWdubWVudCBhbmQgYWxzbyBmb3Jj ZXMgd3JpdGUgcmVzcG9uc2VzIHRvIGNvbWUgZnJvbQo+IHRoZSBlbmRwb2ludC4KPiAKPiBJIHRo aW5rIHRoZSBuYW1pbmcgbWlzbWF0Y2ggaXMgaGlzdG9yaWNhbCwgYnV0IG9uIGFybTY0IHdlIHdh bnRlZCB0byB1c2UgdGhlCj4gc2FtZSBuYW1lcyBhcyBhcm0zMiBzbyB0aGF0IGFueSBkcml2ZXJz IHVzaW5nIHRoZXNlIHRoaW5ncyBkaXJlY3RseSB3b3VsZCBnZXQKPiB0aGUgc2FtZSBiZWhhdmlv dXIuCgpUaGF0IGFsbCBtYWtlcyBzZW5zZSwgYnV0IGl0IHRvdGFsbHkgbmVlZHMgYSBjb21tZW50 LiAgSSdsbCB0cnkgdG8gZHJhZnQKb25lIGJhc2VkIG9uIHRoaXMuICBJJ3ZlIGFsc28gbG9va2Vk IGF0IHRoZSBhcm0zMiBjb2RlIGEgYml0IG1vcmUsIGFuZAppdCBzZWVtcyBhcm0gYWx3YXlzICg/ KSBzdXBwb3J0ZWQgTm9ybWFsIG5vbi1jYWNoZWFibGUgYXR0cmlidXRlLCBidXQKTGludXggb25s eSBvcHRpb25hbGx5IHVzZXMgaXQgZm9yIGFybSB2NisgYmVjYXVzZSBvZiBmZWFycyBvZiBkcml2 ZXJzCm1pc3NpbmcgYmFycmllcnMuICBUaGUgb3RoZXIgcmVhbGx5IHdlaXJkIHRoaW5ncyBpcyB0 aGF0IGluIGFybTMyCnBncHJvdF9kbWFjb2hlcmVudCBpbmN1ZGVzIHRoZSBMX1BURV9YTiBiaXQs IHdoaWNoIGZyb20gbXkgdW5kZXJzdGFuZGluZwppcyB0aGUgbm8tZXhlY3R1cmUgYml0LCBidXQg cGdwcm90X3dyaXRlY29tYmluZSBkb2VzIG5vdC4gIFRoaXMgc2VlbXMgdG8Kbm90IHZlcnkgdW5p bnRlbnRpb25hbC4gIFNvIG1pbnVzIHRoYXQgdGhlIHdob2xlIERNQV9BVFRSX1dSSVRFX0NPTULQ hk5FCnNlZW1zIHRvIGJlIGFib3V0IGZsYWdnaW5nIG9sZCBhcm0gc3BlY2lmaWMgZHJpdmVycyBh cyBoYXZpbmcgdGhlIHByb3BlcgpiYXJyaWVycyBpbiBwbGFjZXMgYW5kIG90aGVyd2lzZSBpcyBh IG5vLW9wLgoKSGVyZSBpcyBteSB0ZW50YXRpdmUgcGxhbjoKCiAtIHJlc3BpbiB0aGlzIHBhdGNo IHdpdGggYSBzbWFsbCBmaXggdG8gaGFuZGxlIHRoZQogICBETUFfQVRUUl9OT05fQ09OU0lTVEVO VCAoYXMgaW4gaWdub3JlIGl0IHVubGVzcyBhY3R1YWxseSBzdXBwb3J0ZWQpLAogICBidXQga2Vl cCB0aGUgbmFtZSBhcy1pcyB0byBhdm9pZCBjaHVybi4gIFRoaXMgc2hvdWxkIGFsbG93IDUuMwog ICBpbmNsdXNpb24gYW5kIGJhY2twb3J0cwogLSByZW1vdmUgRE1BX0FUVFJfV1JJVEVfQ09NQklO RSBzdXBwb3J0IGZyb20gbWlwcywgcHJvYmFibHkgYWxzbyA1LjMKICAgbWF0ZXJpYWwuCiAtIG1v dmUgYWxsIGFyY2hpdGVjdHVyZXMgYnV0IGFybSBvdmVyIHRvIGp1c3QgZGVmaW5lCiAgIHBncHJv dF9kbWFjb2hlcmVudCwgaW5jbHVkaW5nIGEgY29tbWVudCB3aXRoIHRoZSBhYm92ZSBleHBsYW5h dGlvbgogICBmb3IgYXJtNjQuCiAtIG1ha2UgRE1BX0FUVFJfV1JJVEVfQ09NQklORSBhIG5vLW9w IGFuZCBzY2hlZHVsZSBpdCBmb3IgcmVtb3ZhbCwKICAgdGh1cyByZW1vdmluZyB0aGUgbGFzdCBp bnN0YW5jZXMgb2YgYXJjaF9kbWFfbW1hcF9wZ3Byb3QKX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxp bnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWls bWFuL2xpc3RpbmZvL2lvbW11