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Fri, 04 Jun 2021 07:10:30 +0000 (UTC) Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 29A2C21A10; Fri, 4 Jun 2021 07:10:29 +0000 (UTC) Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id F390A118DD; Fri, 4 Jun 2021 07:10:28 +0000 (UTC) Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id VvFCOuTRuWDUNAAALh3uQQ (envelope-from ); Fri, 04 Jun 2021 07:10:28 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 378d2af0-c382-4096-9183-40cc292bc29f DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1622790629; 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=9EfjWUkQUOb60GN9NSBR3bPAh69zGtr9vLU1ZSX0+M8=; b=W4Y9Bz6mi61tKpdcwQr5RgmQ/PRTrSHhgDxDCpJhOn0aG4EX2lYDWsv5ACSlyqKvLXJegS EhiGj99sd6xaK6Zpe+4RL/58UBtVOrFj/oOMe2nSTon282/RpzUPbe9Fpjx5S4f0+9pcZU YWcmxjxCIsF/7r+4zL08ElJN1imrvYg= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1622790629; 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=9EfjWUkQUOb60GN9NSBR3bPAh69zGtr9vLU1ZSX0+M8=; b=W4Y9Bz6mi61tKpdcwQr5RgmQ/PRTrSHhgDxDCpJhOn0aG4EX2lYDWsv5ACSlyqKvLXJegS EhiGj99sd6xaK6Zpe+4RL/58UBtVOrFj/oOMe2nSTon282/RpzUPbe9Fpjx5S4f0+9pcZU YWcmxjxCIsF/7r+4zL08ElJN1imrvYg= To: Jan Beulich , AL13N Cc: Xen-devel , "Durrant, Paul" References: <6ccb04f2d93be6089b049df1f94a91dd@mail.rmail.be> <175befe0e853565761e51f07b79c49cf@mail.rmail.be> <552b4348-1c52-ce6b-9001-a144c7147a7c@suse.com> <0100caba62175123c63f0df4749a8c88@mail.rmail.be> <8a572357-e743-80a6-fed6-3c4999b986ec@suse.com> From: Juergen Gross Subject: Re: pci passthrough issue introduced between 4.14.1 and 4.15.0 Message-ID: <23d90cf3-2bc8-f6f6-449d-1741ff4261ec@suse.com> Date: Fri, 4 Jun 2021 09:10:28 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <8a572357-e743-80a6-fed6-3c4999b986ec@suse.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="2LnsbVJj3UtyLWLg86IVKQM5yc7IXNz6h" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --2LnsbVJj3UtyLWLg86IVKQM5yc7IXNz6h Content-Type: multipart/mixed; boundary="yUIQOeA5GkctKYl9JEe1VlbStF28ZkT2H"; protected-headers="v1" From: Juergen Gross To: Jan Beulich , AL13N Cc: Xen-devel , "Durrant, Paul" Message-ID: <23d90cf3-2bc8-f6f6-449d-1741ff4261ec@suse.com> Subject: Re: pci passthrough issue introduced between 4.14.1 and 4.15.0 References: <6ccb04f2d93be6089b049df1f94a91dd@mail.rmail.be> <175befe0e853565761e51f07b79c49cf@mail.rmail.be> <552b4348-1c52-ce6b-9001-a144c7147a7c@suse.com> <0100caba62175123c63f0df4749a8c88@mail.rmail.be> <8a572357-e743-80a6-fed6-3c4999b986ec@suse.com> In-Reply-To: <8a572357-e743-80a6-fed6-3c4999b986ec@suse.com> --yUIQOeA5GkctKYl9JEe1VlbStF28ZkT2H Content-Type: multipart/mixed; boundary="------------F10E9242EBCD1C77246CF79B" Content-Language: en-US This is a multi-part message in MIME format. --------------F10E9242EBCD1C77246CF79B Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 04.06.21 08:56, Jan Beulich wrote: > On 03.06.2021 18:01, AL13N wrote: >> Jan Beulich schreef op 2021-06-01 16:53: >>> On 01.06.2021 16:44, AL13N wrote: >>>> This mailing list is the correct place for the toolstack too? right?= >>> >>> Yes. >> >> So, what's the plan to fix this? is the plan to fix the toolstack? or >> put your patch in kernel to kinda workaround it? >=20 > The patch has already been put in the kernel, as said. It would be good= > to know whether it actually has helped your case as well. >=20 >> Is there a way to make a regression test or unit test or something? >=20 > Would be nice, but may be a little difficult to arrange for in, say, > osstest. >=20 >> Does anyone have an idea on what patch would cause the regression? >=20 > Not me, but I'm also not a tool stack maintainer (nor expert in any > way). There has been a large series by Paul Durrant [1] making heavy modifications in this area. Juergen [1]: https://lists.xen.org/archives/html/xen-devel/2020-11/msg01680.html --------------F10E9242EBCD1C77246CF79B Content-Type: application/pgp-keys; name="OpenPGP_0xB0DE9DD628BF132F.asc" Content-Transfer-Encoding: quoted-printable Content-Description: OpenPGP public key Content-Disposition: attachment; filename="OpenPGP_0xB0DE9DD628BF132F.asc" -----BEGIN PGP PUBLIC KEY BLOCK----- xsBNBFOMcBYBCACgGjqjoGvbEouQZw/ToiBg9W98AlM2QHV+iNHsEs7kxWhKMjrioyspZKOBy= cWx w3ie3j9uvg9EOB3aN4xiTv4qbnGiTr3oJhkB1gsb6ToJQZ8uxGq2kaV2KL9650I1SJvedYm8O= f8Z d621lSmoKOwlNClALZNew72NjJLEzTalU1OdT7/i1TXkH09XSSI8mEQ/ouNcMvIJNwQpd369y= 9bf IhWUiVXEK7MlRgUG6MvIj6Y3Am/BBLUVbDa4+gmzDC9ezlZkTZG2t14zWPvxXP3FAp2pkW0xq= G7/ 377qptDmrk42GlSKN4z76ELnLxussxc7I2hx18NUcbP8+uty4bMxABEBAAHNHEp1ZXJnZW4gR= 3Jv c3MgPGpnQHBmdXBmLm5ldD7CwHkEEwECACMFAlOMcBYCGwMHCwkIBwMCAQYVCAIJCgsEFgIDA= QIe AQIXgAAKCRCw3p3WKL8TL0KdB/93FcIZ3GCNwFU0u3EjNbNjmXBKDY4FUGNQH2lvWAUy+dnyT= hpw dtF/jQ6j9RwE8VP0+NXcYpGJDWlNb9/JmYqLiX2Q3TyevpB0CA3dbBQp0OW0fgCetToGIQrg0= MbD 1C/sEOv8Mr4NAfbauXjZlvTj30H2jO0u+6WGM6nHwbh2l5O8ZiHkH32iaSTfN7Eu5RnNVUJbv= oPH Z8SlM4KWm8rG+lIkGurqqu5gu8q8ZMKdsdGC4bBxdQKDKHEFExLJK/nRPFmAuGlId1E3fe10v= 5QL +qHI3EIPtyfE7i9Hz6rVwi7lWKgh7pe0ZvatAudZ+JNIlBKptb64FaiIOAWDCx1SzR9KdWVyZ= 2Vu IEdyb3NzIDxqZ3Jvc3NAc3VzZS5jb20+wsB5BBMBAgAjBQJTjHCvAhsDBwsJCAcDAgEGFQgCC= QoL BBYCAwECHgECF4AACgkQsN6d1ii/Ey/HmQf/RtI7kv5A2PS4RF7HoZhPVPogNVbC4YA6lW7Dr= Wf0 teC0RR3MzXfy6pJ+7KLgkqMlrAbN/8Dvjoz78X+5vhH/rDLa9BuZQlhFmvcGtCF8eR0T1v0nC= /nu AFVGy+67q2DH8As3KPu0344TBDpAvr2uYM4tSqxK4DURx5INz4ZZ0WNFHcqsfvlGJALDeE0Lh= ITT d9jLzdDad1pQSToCnLl6SBJZjDOX9QQcyUigZFtCXFst4dlsvddrxyqT1f17+2cFSdu7+ynLm= XBK 7abQ3rwJY8SbRO2iRulogc5vr/RLMMlscDAiDkaFQWLoqHHOdfO9rURssHNN8WkMnQfvUewRz= 80h SnVlcmdlbiBHcm9zcyA8amdyb3NzQG5vdmVsbC5jb20+wsB5BBMBAgAjBQJTjHDXAhsDBwsJC= AcD AgEGFQgCCQoLBBYCAwECHgECF4AACgkQsN6d1ii/Ey8PUQf/ehmgCI9jB9hlgexLvgOtf7PJn= FOX gMLdBQgBlVPO3/D9R8LtF9DBAFPNhlrsfIG/SqICoRCqUcJ96Pn3P7UUinFG/I0ECGF4EvTE1= jnD kfJZr6jrbjgyoZHiw/4BNwSTL9rWASyLgqlA8u1mf+c2yUwcGhgkRAd1gOwungxcwzwqgljf0= N51 N5JfVRHRtyfwq/ge+YEkDGcTU6Y0sPOuj4Dyfm8fJzdfHNQsWq3PnczLVELStJNdapwPOoE+l= otu fe3AM2vAEYJ9rTz3Cki4JFUsgLkHFqGZarrPGi1eyQcXeluldO3m91NK/1xMI3/+8jbO0tsn1= tqS EUGIJi7ox80eSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuZGU+wsB5BBMBAgAjBQJTjHDrA= hsD BwsJCAcDAgEGFQgCCQoLBBYCAwECHgECF4AACgkQsN6d1ii/Ey+LhQf9GL45eU5vOowA2u5N3= g3O ZUEBmDHVVbqMtzwlmNC4k9Kx39r5s2vcFl4tXqW7g9/ViXYuiDXb0RfUpZiIUW89siKrkzmQ5= dM7 wRqzgJpJwK8Bn2MIxAKArekWpiCKvBOB/Cc+3EXE78XdlxLyOi/NrmSGRIov0karw2RzMNOu5= D+j LRZQd1Sv27AR+IP3I8U4aqnhLpwhK7MEy9oCILlgZ1QZe49kpcumcZKORmzBTNh30FVKK1Evm= V2x AKDoaEOgQB4iFQLhJCdP1I5aSgM5IVFdn7v5YgEYuJYx37IoN1EblHI//x/e2AaIHpzK5h88N= Eaw QsaNRpNSrcfbFmAg987ATQRTjHAWAQgAyzH6AOODMBjgfWE9VeCgsrwH3exNAU32gLq2xvjpW= nHI s98ndPUDpnoxWQugJ6MpMncr0xSwFmHEgnSEjK/PAjppgmyc57BwKII3sV4on+gDVFJR6Y8ZR= wgn BC5mVM6JjQ5xDk8WRXljExRfUX9pNhdE5eBOZJrDRoLUmmjDtKzWaDhIg/+1Hzz93X4fCQkNV= bVF LELU9bMaLPBG/x5q4iYZ2k2ex6d47YE1ZFdMm6YBYMOljGkZKwYde5ldM9mo45mmwe0icXKLk= pEd IXKTZeKDO+Hdv1aqFuAcccTg9RXDQjmwhC3yEmrmcfl0+rPghO0Iv3OOImwTEe4co3c1mwARA= QAB wsBfBBgBAgAJBQJTjHAWAhsMAAoJELDendYovxMvQ/gH/1ha96vm4P/L+bQpJwrZ/dneZcmEw= Tbe 8YFsw2V/Buv6Z4Mysln3nQK5ZadD534CF7TDVft7fC4tU4PONxF5D+/tvgkPfDAfF77zy2AH1= vJz Q1fOU8lYFpZXTXIHb+559UqvIB8AdgR3SAJGHHt4RKA0F7f5ipYBBrC6cyXJyyoprT10EMvU8= VGi wXvTyJz3fjoYsdFzpWPlJEBRMedCot60g5dmbdrZ5DWClAr0yau47zpWj3enf1tLWaqcsuylW= svi uGjKGw7KHQd3bxALOknAp4dN3QwBYCKuZ7AddY9yjynVaD5X7nF9nO5BjR/i1DG86lem3iBDX= zXs ZDn8R38=3D =3D2wuH -----END PGP PUBLIC KEY BLOCK----- --------------F10E9242EBCD1C77246CF79B-- --yUIQOeA5GkctKYl9JEe1VlbStF28ZkT2H-- --2LnsbVJj3UtyLWLg86IVKQM5yc7IXNz6h Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature" -----BEGIN PGP SIGNATURE----- wsB5BAABCAAjFiEEhRJncuj2BJSl0Jf3sN6d1ii/Ey8FAmC50eQFAwAAAAAACgkQsN6d1ii/Ey8N AAf/eFWb6WX0BxK8n6rKeo9McCeOhNE3E7IlVXaNBKEyD+iA4tTZdjJIpnlEtkqG/ve2ZRqpmskh l3wdTHuaWfQx1FH3HfKxRn+zmm6abEC6y+TJUO/5blGuybhtlCrUrdf1NjmbwWVqBfCONrTBVBkU K7B7/aIxqup8EM63tK76nAXA0HSGixZnvFqZ/OioaXPFVNXXt3pJ+pMLZqDEVZc8eOIkZTwhwa55 CbzhebmWVSDmwNXhXpMrWqC8yZwmV/zBzDWKMmUpBfkGtZoNX4jNXJ1//GL3g2ugm5magujJHqdM ikLPeTIyt7Fs05eXD9v2qzUerZBIogiWE77W2oaCKg== =UFJR -----END PGP SIGNATURE----- --2LnsbVJj3UtyLWLg86IVKQM5yc7IXNz6h--