Received: by 2002:a05:6a10:5594:0:0:0:0 with SMTP id ee20csp152667pxb; Mon, 25 Apr 2022 07:32:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxvhyaWF7hMemDGmuFXPMAEoQPeSGX1tz5QcDBQlDiPgGWfIkdtYOJTKoBqhlcVJvvM+bPm X-Received: by 2002:a17:907:94ca:b0:6da:b785:f067 with SMTP id dn10-20020a17090794ca00b006dab785f067mr16859170ejc.654.1650897178002; Mon, 25 Apr 2022 07:32:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1650897177; cv=none; d=google.com; s=arc-20160816; b=hqum17dh6ByuPQHoxFFvyIhAXRqJVR1R64fGYhh9fW5jy3muiHfVLFwPbWnBYBxEPi /tMVtL9Nkqb8jQr54qMqbJkeLe4D2uFatn5bBxyiojP7N252BnBJucxKdTzClRcRjVzT pQeRVc77BjvTR2supwws8ufCNokVVFxKr1JOrKWRiVPCynwriBaSduQKKTbiuxQRgWv6 eLLQpC0fDGNxEcAByAlUJiH2+w8fiXqf7oywkz1pNYsXCuJPyVAjWuEmxhWxEf/0VbTS 2Vi/57y76WFNRYo70qksnHkHXkpSxUPqX3zyaxCX16Tv0/+ZWxPVPK3kENgpgDZqKOqN GW6g== 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; bh=XOZ4B64PQp3QRZDkrypCGMf/bZ0hCmFjlGKE4h24+mM=; b=eakNmNQvnbg5yIyj2s7xlaNWYWncqlMFNu+kd4jK/F4lKa6N0Mz9IbhL6EPXX0dOCb JFdHwVe9nYxWEEfPVxHySLynITGvd3MxSuQpiZpISDu6UVQRes901ehJr7KhMUubIdzF FpGfQs8RLHRSFXtD3hZ2M02uBUULR95LEXsX6/LQu4B739JVmciAVrjnjpIYvopUsz+/ 44DTXyzz7MvUuQvcO9Vp9FpRxZM8M3vtSI7d/knCGG7bR1XhY/A+5BxAh/8CeR8zfmRL hzEeFKl7fpw1wbpWh9GqZXO5Jt+KMemmP7rt98vL9VFUgV/KjVDLkJET94h745WHHGsD 1jJw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=PK0exDEE; 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=QUARANTINE sp=QUARANTINE dis=NONE) header.from=suse.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id j18-20020a05640211d200b00420a7fdbdd0si9317913edw.594.2022.04.25.07.32.26; Mon, 25 Apr 2022 07:32:57 -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.com header.s=susede1 header.b=PK0exDEE; 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=QUARANTINE sp=QUARANTINE dis=NONE) header.from=suse.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241420AbiDYHvs (ORCPT + 99 others); Mon, 25 Apr 2022 03:51:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45240 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241438AbiDYHvX (ORCPT ); Mon, 25 Apr 2022 03:51:23 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1947863D2 for ; Mon, 25 Apr 2022 00:47:52 -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 D1053210E3; Mon, 25 Apr 2022 07:47:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1650872870; 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=XOZ4B64PQp3QRZDkrypCGMf/bZ0hCmFjlGKE4h24+mM=; b=PK0exDEEY6G0RKSVAYgvQ3K/zqysbdYeTj5P2OWOYQeGD4yDVU0gcaTHnBLurBsf5QgfoT fAH14WNJ9QRhLfjDUm8YmHYbC1hcVVvzXyUCWIBIkc3plaYi3dYcjyxRuQBNzQFZpqmJ1T TXZUceooP1N5NHCaZflRC187gXd97IY= 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 4E2A213AED; Mon, 25 Apr 2022 07:47:50 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id anV8ESZSZmLGaQAAMHmgww (envelope-from ); Mon, 25 Apr 2022 07:47:50 +0000 Message-ID: Date: Mon, 25 Apr 2022 09:47:49 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH V1 3/6] xen/virtio: Add option to restrict memory access under Xen Content-Language: en-US To: Oleksandr , Christoph Hellwig Cc: xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Boris Ostrovsky , Stefano Stabellini , Julien Grall , Oleksandr Tyshchenko , "Michael S. Tsirkin" References: <1650646263-22047-1-git-send-email-olekstysh@gmail.com> <1650646263-22047-4-git-send-email-olekstysh@gmail.com> <6c5042fe-dafc-eb4f-c1fa-03b0faf252de@gmail.com> From: Juergen Gross In-Reply-To: <6c5042fe-dafc-eb4f-c1fa-03b0faf252de@gmail.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------RTRugpKcpQELUP0Gus1cI1VK" X-Spam-Status: No, score=-6.3 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 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) --------------RTRugpKcpQELUP0Gus1cI1VK Content-Type: multipart/mixed; boundary="------------XSdyHfDZ8NSbH9riXD1TXs2C"; protected-headers="v1" From: Juergen Gross To: Oleksandr , Christoph Hellwig Cc: xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Boris Ostrovsky , Stefano Stabellini , Julien Grall , Oleksandr Tyshchenko , "Michael S. Tsirkin" Message-ID: Subject: Re: [PATCH V1 3/6] xen/virtio: Add option to restrict memory access under Xen References: <1650646263-22047-1-git-send-email-olekstysh@gmail.com> <1650646263-22047-4-git-send-email-olekstysh@gmail.com> <6c5042fe-dafc-eb4f-c1fa-03b0faf252de@gmail.com> In-Reply-To: <6c5042fe-dafc-eb4f-c1fa-03b0faf252de@gmail.com> --------------XSdyHfDZ8NSbH9riXD1TXs2C Content-Type: multipart/mixed; boundary="------------AUotc6vkbgM0g5J5WIJwHZMe" --------------AUotc6vkbgM0g5J5WIJwHZMe Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 T24gMjQuMDQuMjIgMTg6NTMsIE9sZWtzYW5kciB3cm90ZToNCj4gDQo+IE9uIDIzLjA0LjIy IDE5OjQwLCBDaHJpc3RvcGggSGVsbHdpZyB3cm90ZToNCj4gDQo+IA0KPiBIZWxsbyBDaHJp c3RvcGgNCj4gDQo+PiBQbGVhc2Ugc3BsaXQgdGhpcyBpbnRvIG9uZSBwYXRjaCB0aGF0IGNy ZWF0ZXMgZ3JhbnQtZG1hLW9wcywgYW5kIGFub3RoZXINCj4+IHRoYXQgc2V0cyB1cCB0aGUg dmlydGlvIHJlc3RyaWN0ZWQgYWNjZXNzIGhlbHBlcnMuDQo+IA0KPiANCj4gU291bmRzIHJl YXNvbmFibGUsIHdpbGwgZG86DQo+IA0KPiAxLiBncmFudC1kbWEtb3BzLmMgd2l0aCBjb25m aWcgWEVOX0dSQU5UX0RNQV9PUFMNCj4gDQo+IDIuIGFyY2hfaGFzX3Jlc3RyaWN0ZWRfdmly dGlvX21lbW9yeV9hY2Nlc3MoKSB3aXRoIGNvbmZpZyBYRU5fVklSVElPDQo+IA0KPiANCj4+ DQo+Pj4gKw0KPj4+ICsjaWZkZWYgQ09ORklHX0FSQ0hfSEFTX1JFU1RSSUNURURfVklSVElP X01FTU9SWV9BQ0NFU1MNCj4+PiAraW50IGFyY2hfaGFzX3Jlc3RyaWN0ZWRfdmlydGlvX21l bW9yeV9hY2Nlc3Modm9pZCkNCj4+PiArew0KPj4+ICvCoMKgwqAgcmV0dXJuICh4ZW5faGFz X3Jlc3RyaWN0ZWRfdmlydGlvX21lbW9yeV9hY2Nlc3MoKSB8fA0KPj4+ICvCoMKgwqDCoMKg wqDCoMKgwqDCoMKgIGNjX3BsYXRmb3JtX2hhcyhDQ19BVFRSX0dVRVNUX01FTV9FTkNSWVBU KSk7DQo+Pj4gK30NCj4+IFNvIGluc3RlYWQgb2YgaGFyZGNvZGluZyBYZW4gaGVyZSwgdGhp cyBzZWVtcyBsaWtlIGEgY2FuZGlkYXRlIGZvcg0KPj4gYW5vdGhlciBjY19wbGF0Zm9ybV9o YXMgZmxhZy4NCj4gDQo+IA0KPiBJIGhhdmUgYSBsaW1pdGVkIGtub3dsZWRnZSBvZiB4ODYg YW5kIFhlbiBvbiB4ODYuDQo+IA0KPiBXb3VsZCB0aGUgWGVuIHNwZWNpZmljIGJpdHMgZml0 IGludG8gQ29uZmlkZW50aWFsIENvbXB1dGluZyBQbGF0Zm9ybSBjaGVja3M/IEkgDQo+IHdp bGwgbGV0IEp1ZXJnZW4vQm9yaXMgY29tbWVudCBvbiB0aGlzLg0KDQpJIGRvbid0IHRoaW5r IGNjX3BsYXRmb3JtX2hhcyB3b3VsZCBiZSBjb3JyZWN0IGhlcmUuIFhlbiBjZXJ0YWlubHkN CnByb3ZpZGVzIG1vcmUgaXNvbGF0aW9uIGJldHdlZW4gZ3Vlc3RzIGFuZCBkb20wLCBidXQg IkNvbmZpZGVudGlhbA0KQ29tcHV0aW5nIiBpcyBiYXNpY2FsbHkgb3J0aG9nb25hbCB0byB0 aGF0IGZlYXR1cmUuDQoNCg0KSnVlcmdlbg0K --------------AUotc6vkbgM0g5J5WIJwHZMe Content-Type: application/pgp-keys; name="OpenPGP_0xB0DE9DD628BF132F.asc" Content-Disposition: attachment; filename="OpenPGP_0xB0DE9DD628BF132F.asc" Content-Description: OpenPGP public key Content-Transfer-Encoding: quoted-printable -----BEGIN PGP PUBLIC KEY BLOCK----- xsBNBFOMcBYBCACgGjqjoGvbEouQZw/ToiBg9W98AlM2QHV+iNHsEs7kxWhKMjri oyspZKOBycWxw3ie3j9uvg9EOB3aN4xiTv4qbnGiTr3oJhkB1gsb6ToJQZ8uxGq2 kaV2KL9650I1SJvedYm8Of8Zd621lSmoKOwlNClALZNew72NjJLEzTalU1OdT7/i 1TXkH09XSSI8mEQ/ouNcMvIJNwQpd369y9bfIhWUiVXEK7MlRgUG6MvIj6Y3Am/B BLUVbDa4+gmzDC9ezlZkTZG2t14zWPvxXP3FAp2pkW0xqG7/377qptDmrk42GlSK N4z76ELnLxussxc7I2hx18NUcbP8+uty4bMxABEBAAHNHEp1ZXJnZW4gR3Jvc3Mg PGpnQHBmdXBmLm5ldD7CwHkEEwECACMFAlOMcBYCGwMHCwkIBwMCAQYVCAIJCgsE FgIDAQIeAQIXgAAKCRCw3p3WKL8TL0KdB/93FcIZ3GCNwFU0u3EjNbNjmXBKDY4F UGNQH2lvWAUy+dnyThpwdtF/jQ6j9RwE8VP0+NXcYpGJDWlNb9/JmYqLiX2Q3Tye vpB0CA3dbBQp0OW0fgCetToGIQrg0MbD1C/sEOv8Mr4NAfbauXjZlvTj30H2jO0u +6WGM6nHwbh2l5O8ZiHkH32iaSTfN7Eu5RnNVUJbvoPHZ8SlM4KWm8rG+lIkGurq qu5gu8q8ZMKdsdGC4bBxdQKDKHEFExLJK/nRPFmAuGlId1E3fe10v5QL+qHI3EIP tyfE7i9Hz6rVwi7lWKgh7pe0ZvatAudZ+JNIlBKptb64FaiIOAWDCx1SzR9KdWVy Z2VuIEdyb3NzIDxqZ3Jvc3NAc3VzZS5jb20+wsB5BBMBAgAjBQJTjHCvAhsDBwsJ CAcDAgEGFQgCCQoLBBYCAwECHgECF4AACgkQsN6d1ii/Ey/HmQf/RtI7kv5A2PS4 RF7HoZhPVPogNVbC4YA6lW7DrWf0teC0RR3MzXfy6pJ+7KLgkqMlrAbN/8Dvjoz7 8X+5vhH/rDLa9BuZQlhFmvcGtCF8eR0T1v0nC/nuAFVGy+67q2DH8As3KPu0344T BDpAvr2uYM4tSqxK4DURx5INz4ZZ0WNFHcqsfvlGJALDeE0LhITTd9jLzdDad1pQ SToCnLl6SBJZjDOX9QQcyUigZFtCXFst4dlsvddrxyqT1f17+2cFSdu7+ynLmXBK 7abQ3rwJY8SbRO2iRulogc5vr/RLMMlscDAiDkaFQWLoqHHOdfO9rURssHNN8WkM nQfvUewRz80hSnVlcmdlbiBHcm9zcyA8amdyb3NzQG5vdmVsbC5jb20+wsB5BBMB AgAjBQJTjHDXAhsDBwsJCAcDAgEGFQgCCQoLBBYCAwECHgECF4AACgkQsN6d1ii/ Ey8PUQf/ehmgCI9jB9hlgexLvgOtf7PJnFOXgMLdBQgBlVPO3/D9R8LtF9DBAFPN hlrsfIG/SqICoRCqUcJ96Pn3P7UUinFG/I0ECGF4EvTE1jnDkfJZr6jrbjgyoZHi w/4BNwSTL9rWASyLgqlA8u1mf+c2yUwcGhgkRAd1gOwungxcwzwqgljf0N51N5Jf VRHRtyfwq/ge+YEkDGcTU6Y0sPOuj4Dyfm8fJzdfHNQsWq3PnczLVELStJNdapwP OoE+lotufe3AM2vAEYJ9rTz3Cki4JFUsgLkHFqGZarrPGi1eyQcXeluldO3m91NK /1xMI3/+8jbO0tsn1tqSEUGIJi7ox80eSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1 c2UuZGU+wsB5BBMBAgAjBQJTjHDrAhsDBwsJCAcDAgEGFQgCCQoLBBYCAwECHgEC F4AACgkQsN6d1ii/Ey+LhQf9GL45eU5vOowA2u5N3g3OZUEBmDHVVbqMtzwlmNC4 k9Kx39r5s2vcFl4tXqW7g9/ViXYuiDXb0RfUpZiIUW89siKrkzmQ5dM7wRqzgJpJ wK8Bn2MIxAKArekWpiCKvBOB/Cc+3EXE78XdlxLyOi/NrmSGRIov0karw2RzMNOu 5D+jLRZQd1Sv27AR+IP3I8U4aqnhLpwhK7MEy9oCILlgZ1QZe49kpcumcZKORmzB TNh30FVKK1EvmV2xAKDoaEOgQB4iFQLhJCdP1I5aSgM5IVFdn7v5YgEYuJYx37Io N1EblHI//x/e2AaIHpzK5h88NEawQsaNRpNSrcfbFmAg987ATQRTjHAWAQgAyzH6 AOODMBjgfWE9VeCgsrwH3exNAU32gLq2xvjpWnHIs98ndPUDpnoxWQugJ6MpMncr 0xSwFmHEgnSEjK/PAjppgmyc57BwKII3sV4on+gDVFJR6Y8ZRwgnBC5mVM6JjQ5x Dk8WRXljExRfUX9pNhdE5eBOZJrDRoLUmmjDtKzWaDhIg/+1Hzz93X4fCQkNVbVF LELU9bMaLPBG/x5q4iYZ2k2ex6d47YE1ZFdMm6YBYMOljGkZKwYde5ldM9mo45mm we0icXKLkpEdIXKTZeKDO+Hdv1aqFuAcccTg9RXDQjmwhC3yEmrmcfl0+rPghO0I v3OOImwTEe4co3c1mwARAQABwsBfBBgBAgAJBQJTjHAWAhsMAAoJELDendYovxMv Q/gH/1ha96vm4P/L+bQpJwrZ/dneZcmEwTbe8YFsw2V/Buv6Z4Mysln3nQK5ZadD 534CF7TDVft7fC4tU4PONxF5D+/tvgkPfDAfF77zy2AH1vJzQ1fOU8lYFpZXTXIH b+559UqvIB8AdgR3SAJGHHt4RKA0F7f5ipYBBrC6cyXJyyoprT10EMvU8VGiwXvT yJz3fjoYsdFzpWPlJEBRMedCot60g5dmbdrZ5DWClAr0yau47zpWj3enf1tLWaqc suylWsviuGjKGw7KHQd3bxALOknAp4dN3QwBYCKuZ7AddY9yjynVaD5X7nF9nO5B jR/i1DG86lem3iBDXzXsZDn8R38=3D =3D2wuH -----END PGP PUBLIC KEY BLOCK----- --------------AUotc6vkbgM0g5J5WIJwHZMe-- --------------XSdyHfDZ8NSbH9riXD1TXs2C-- --------------RTRugpKcpQELUP0Gus1cI1VK Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature" -----BEGIN PGP SIGNATURE----- wsB5BAABCAAjFiEEhRJncuj2BJSl0Jf3sN6d1ii/Ey8FAmJmUiUFAwAAAAAACgkQsN6d1ii/Ey83 vQgAllvB7gAmPzj4MJJf1J3ydVrvO/9eWJrgz/vrZAJPBT28frjIAcyOkmnvU61akrHDYp0TdaFR xsXXrTja9p8p1wkcizFfvwEO43WaFmTnxVO5LQyw0xZyPQVwsRmZ6cdcnStlwDUc6HqFghpiDSVQ NFosdwG/eB81MFHq2sSyhuc+ZpAd1+/GKk9Gri46PgO7m1NCBqiN6eBNoWkik6DUkR32fPutFw3e 4m6UqtOYu6htLUYWx+gF3Iq9KSafJLSypAJ09YS8dOvNzCrXmwFSRp6Ri43VJ2LJQc1Eo0++cFlC 9Ho5QTt1fs81HBVVA6FWCCeLJ4LIeMQG5Q9sKPUb2w== =8gGu -----END PGP SIGNATURE----- --------------RTRugpKcpQELUP0Gus1cI1VK--