Received: by 2002:a6b:fb09:0:0:0:0:0 with SMTP id h9csp5654275iog; Thu, 23 Jun 2022 02:39:35 -0700 (PDT) X-Google-Smtp-Source: AGRyM1uJpjUWWDbrnfVZ/TnCfDW33QgQgXoDMcYfOZpcb/v6+GulMt8qGRFMohBgItOSvYzabzHJ X-Received: by 2002:a17:907:7f0e:b0:722:a7e9:6f7f with SMTP id qf14-20020a1709077f0e00b00722a7e96f7fmr7390163ejc.228.1655977175344; Thu, 23 Jun 2022 02:39:35 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1655977175; cv=none; d=google.com; s=arc-20160816; b=Us+OEqvKC8WI2AN6GWWFX6QcDnSHG2NGJ5mrrb4MUAuxT2Bz6cQhA8PqWZU5QHK+bx znfd69g4nCskvJw9TH3lYOSo294k9Cz5JD7aLMYdsS7LyLd+pu8mVkhIZktogUNB0tkz VKWXVgZWm44GDDH6DKEhKSGrtjM2n1BNM2Vabfp0jSOlMnvntcmunQBpzM7SU30Qbs0z 1S8ToJ7ePIlezOUR0wROeilzQwbS6YA+XMJK9WlFHEvKJipYzWSK3N3fg6FyTE0ue6iy 4XU4/s7TXT2SZrpmosXBmDoaXQ/a9eMPz7SVh86XQbSl8+gt8L2RPxTKofX66aDX8Y0P 174w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :dkim-signature:dkim-signature; bh=sD3bTgg438R/xlPh35R/pRi8nACfuVU2+pQ/XzpwbpE=; b=w/Bd5+e11ltTL991Fs6bDvUoGJyIVX6S6iLbb8F0qMGUE4oJp8TJVq8yP2Zr6300Gi bKbbJRdcf95w315J7Vo91yf6G9VrD8MByIjE/KxsNVyRA2eDhjJj6bYxvv7HWojBH579 cN1/lvfDsX4aw+GRaQOUqVEq02GrtGsaNbUYhOZ5aWSIT47o3tcQ1nxOBfdsdUFnEGtH coBU1p+XLY9M53sxjpVV5V/RwcbQ3PSGx0nF/7N59QKvqstXnVPTOQya+S3pZsfDCKZ/ EXxTHWDQ7QLK1ZWajOTTho1Qo0fVTD/B46fAYQu6t6JI3R6lnC+b9m/Taqjy4O8OZKP+ X4yg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b=yOLt126V; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519 header.b="ENyeTl/J"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id dr7-20020a170907720700b006fec302305asi17800287ejc.281.2022.06.23.02.39.10; Thu, 23 Jun 2022 02:39:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b=yOLt126V; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519 header.b="ENyeTl/J"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230394AbiFWImy (ORCPT + 99 others); Thu, 23 Jun 2022 04:42:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52374 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229704AbiFWImw (ORCPT ); Thu, 23 Jun 2022 04:42:52 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 231B848E7C; Thu, 23 Jun 2022 01:42:51 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id D70CD21DAB; Thu, 23 Jun 2022 08:42:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1655973769; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=sD3bTgg438R/xlPh35R/pRi8nACfuVU2+pQ/XzpwbpE=; b=yOLt126VjwmgVhVtMJvQXIfxMSX3pTDHUj7eZiO5LikO24ep+OKG5uvJ4V3HvSLa5nPeG+ JrZrdbeHH5RgrOLNBLlLA5XgsJGFOCxt5qJiBajjGpnuLepfcDFpSe7Ia8GHht7Lah0yzg k/WhDVbmHjBEuSgZRTtxDSGOThqfboQ= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1655973769; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=sD3bTgg438R/xlPh35R/pRi8nACfuVU2+pQ/XzpwbpE=; b=ENyeTl/Jo1Vi+HvfHE/2AhjgCXvcI37V1VlY55RmaH8FvXHIJTvj1HEyYAheiD1Dqtmg5c ChKL5hVQjn1sN7Bw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id AFEB013461; Thu, 23 Jun 2022 08:42:49 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id gIYAKokntGLuDQAAMHmgww (envelope-from ); Thu, 23 Jun 2022 08:42:49 +0000 Message-ID: <4988ab02-dbdb-e452-7106-771c2a1ebbca@suse.de> Date: Thu, 23 Jun 2022 10:42:49 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: DMA-buf and uncached system memory Content-Language: en-US To: =?UTF-8?Q?Christian_K=c3=b6nig?= , linux-media , dri-devel , linaro-mm-sig@lists.linaro.org, lkml Cc: "Sharma, Shashank" References: <91ff0bbb-ea3a-2663-3453-dea96ccd6dd8@amd.com> <58e11013-01ab-8a2c-732e-860ae83a3df6@suse.de> From: Thomas Zimmermann In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------OFTYXzYkyT04oFpF7yLvli0j" X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------OFTYXzYkyT04oFpF7yLvli0j Content-Type: multipart/mixed; boundary="------------myyGSpB720BVRwpnx5jni6sb"; protected-headers="v1" From: Thomas Zimmermann To: =?UTF-8?Q?Christian_K=c3=b6nig?= , linux-media , dri-devel , linaro-mm-sig@lists.linaro.org, lkml Cc: "Sharma, Shashank" Message-ID: <4988ab02-dbdb-e452-7106-771c2a1ebbca@suse.de> Subject: Re: DMA-buf and uncached system memory References: <91ff0bbb-ea3a-2663-3453-dea96ccd6dd8@amd.com> <58e11013-01ab-8a2c-732e-860ae83a3df6@suse.de> In-Reply-To: --------------myyGSpB720BVRwpnx5jni6sb Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 SGkNCg0KQW0gMjMuMDYuMjIgdW0gMTA6MjYgc2NocmllYiBDaHJpc3RpYW4gS8O2bmlnOg0K PiBBbSAyMy4wNi4yMiB1bSAxMDoxMyBzY2hyaWViIFRob21hcyBaaW1tZXJtYW5uOg0KPj4g SGkgQ2hyaXN0aWFuDQo+Pg0KPj4gQW0gMTUuMDIuMjEgdW0gMDk6NTggc2NocmllYiBDaHJp c3RpYW4gS8O2bmlnOg0KPj4+IEhpIGd1eXMsDQo+Pj4NCj4+PiB3ZSBhcmUgY3VycmVudGx5 IHdvcmtpbmcgYW4gRnJlZXN5bmMgYW5kIGRpcmVjdCBzY2FuIG91dCBmcm9tIHN5c3RlbSAN Cj4+PiBtZW1vcnkgb24gQU1EIEFQVXMgaW4gQStBIGxhcHRvcHMuDQo+Pj4NCj4+PiBPbiBw cm9ibGVtIHdlIHN0dW1ibGVkIG92ZXIgaXMgdGhhdCBvdXIgZGlzcGxheSBoYXJkd2FyZSBu ZWVkcyB0byANCj4+PiBzY2FuIG91dCBmcm9tIHVuY2FjaGVkIHN5c3RlbSBtZW1vcnkgYW5k IHdlIGN1cnJlbnRseSBkb24ndCBoYXZlIGEgDQo+Pj4gd2F5IHRvIGNvbW11bmljYXRlIHRo YXQgdGhyb3VnaCBETUEtYnVmLg0KPj4+DQo+Pj4gRm9yIG91ciBzcGVjaWZpYyB1c2UgY2Fz ZSBhdCBoYW5kIHdlIGFyZSBnb2luZyB0byBpbXBsZW1lbnQgc29tZXRoaW5nIA0KPj4+IGRy aXZlciBzcGVjaWZpYywgYnV0IHRoZSBxdWVzdGlvbiBpcyBzaG91bGQgd2UgaGF2ZSBzb21l dGhpbmcgbW9yZSANCj4+PiBnZW5lcmljIGZvciB0aGlzPw0KPj4NCj4+IEkgaGFkIGEgcGF0 Y2hzZXQgaGVyZSB0aGF0IGV4dGVuZHMgaW9zeXMtbWFwIChmb3JtZXIgZG1hLWJ1Zi1tYXAp IHdpdGggDQo+PiBjYWNoaW5nIGluZm9ybWF0aW9uLiBJJ2xsIHBvc3QgYSBjb3B5Lg0KPiAN Cj4gT2gsIG5pY2UuIEJ1dCB3aHkgb24gaW9zeXMtbWFwPyBXZSBuZWVkIHRoYXQgcGVyIERN QS1idWYuDQoNCkl0J3MgcmV0dXJuZWQgdmlhIHRoZSBkbWEtYnVmJ3Mgdm1hcCBjYWxsIHdp dGhpbiB0aGUgaW9zeXMtbWFwIA0Kc3RydWN0dXJlLiBJZiB0aGUgZG1hLWJ1ZiBtb3Zlcywg dGhlIGZvbGxvd2luZyB2bWFwIGNhbGxzIGFsd2F5cyByZXR1cm4gDQp1cGRhdGVkIGNhY2hp bmcgaW5mb3JtYXRpb24uIE1heWJlIGl0J3Mgbm90IHF1aXRlIHdoYXQgeW91IG5lZWQgZm9y IA0KRnJlZXN5bmM/DQoNCkknbGwgdXNlIHRoaXMgZm9yIGZvcm1hdC1jb252ZXJzaW9uIGhl bHBlcnMsIHdoaWNoIGRvIHNvbWUgb3B0aW1pemF0aW9ucyANCmZvciB1bmNhY2hlZCBtZW1v cnkuDQoNCkFueXdheSwgSSBoYXZlIHRvIGxvb2sgZm9yIHRoYXQgcGF0Y2guLi4NCg0KQmVz dCByZWdhcmRzDQpUaG9tYXMNCg0KPiANCj4gVGhhbmtzLA0KPiBDaHJpc3RpYW4uDQo+IA0K Pj4NCj4+IFNvcnJ5IGZvciBiZWluZyBsYXRlIHRvIHJlcGx5Lg0KPj4NCj4+IEJlc3QgcmVn YXJkcw0KPj4gVGhvbWFzDQo+Pg0KPj4+DQo+Pj4gQWZ0ZXIgYWxsIHRoZSBzeXN0ZW0gbWVt b3J5IGFjY2VzcyBwYXR0ZXJuIGlzIGEgUENJZSBleHRlbnNpb24gYW5kIGFzIA0KPj4+IHN1 Y2ggc29tZXRoaW5nIGdlbmVyaWMuDQo+Pj4NCj4+PiBSZWdhcmRzLA0KPj4+IENocmlzdGlh bi4NCj4+PiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Xw0KPj4+IGRyaS1kZXZlbCBtYWlsaW5nIGxpc3QNCj4+PiBkcmktZGV2ZWxAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnDQo+Pj4gaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1h bi9saXN0aW5mby9kcmktZGV2ZWwNCj4+DQo+IA0KDQotLSANClRob21hcyBaaW1tZXJtYW5u DQpHcmFwaGljcyBEcml2ZXIgRGV2ZWxvcGVyDQpTVVNFIFNvZnR3YXJlIFNvbHV0aW9ucyBH ZXJtYW55IEdtYkgNCk1heGZlbGRzdHIuIDUsIDkwNDA5IE7DvHJuYmVyZywgR2VybWFueQ0K KEhSQiAzNjgwOSwgQUcgTsO8cm5iZXJnKQ0KR2VzY2jDpGZ0c2bDvGhyZXI6IEl2byBUb3Rl dg0K --------------myyGSpB720BVRwpnx5jni6sb-- --------------OFTYXzYkyT04oFpF7yLvli0j Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature" -----BEGIN PGP SIGNATURE----- wsF5BAABCAAjFiEExndm/fpuMUdwYFFolh/E3EQov+AFAmK0J4kFAwAAAAAACgkQlh/E3EQov+B7 YRAApxYE2c7ND8+f3+6Pb52FGy24VVNeAU84N4QiFMoEpWR+3aKnxm+vJ5ATwT/rgBltjQzuGi0P 4IEQeDvjSQfFEYcICM9RaI8LHgIZ0aLGNcETRI/hRDtmcoYuxI5bHG4ZlE8rMjgyDDsuv0wDr06P PdrLMoIPTbTsQFHvVhJnJN6Ma5U1gr+5LHtl4v1aqNoKM4SB01gqARjjRuqCf6TjNK20OtiXrf6j UTFDmV+nIGnaqVv1Vsnyo4LDuQG56Euqukj000STCSq7HJBFnR+XYpxUw+PUREZghbrh6nDSwxmP seHg5qW7DT0nVaHv7J2AnecNKsUtdOfag0m+AtRcbIfTDtnUqetSmRcOgjYyqLQ09uWVQX62NGPA l0SXUrC0/FeVmnr09gZPKBLMOYXkIW4bwYAUogUxjqtZNvCeS3obrQ+yA90KRK8t4G+S6WRUtadh tOCU+8dSQ1wqVOd0YXbzFbC6B+NHMiZdKQc2w3PBOB5fUUE2TqWKffzX+GWKH2siDi0OZjm4mpxt eca8KcyqeTesewXKr/Pvda2qhvivA0t9vzwnc/dyqrHVxarav/qEsXkKbdyOr8XpOEPnT8QjbqKU XERka4C+OWYvfmHa329/3lgkaBMW9EFDguDb6nNcCEd/sToOJEJM+4mhs+WZGaoQaXK3XYIZkV8f sQ0= =Nj+f -----END PGP SIGNATURE----- --------------OFTYXzYkyT04oFpF7yLvli0j--