From mboxrd@z Thu Jan 1 00:00:00 1970 From: Diederik de Haas Subject: Re: Is: EPT violations. Was:Re: Problems with pci/vga passthrough Date: Tue, 24 Jan 2017 16:59:41 +0100 Message-ID: <2314622.B4JEzPgAnC@bagend> References: <3650332.PVtMSBxIKa@bagend> <20170118162050.GD4940@char.us.oracle.com> <1718022.Dtgahs2tVi@bagend> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2683933375632587249==" Return-path: In-Reply-To: <1718022.Dtgahs2tVi@bagend> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org --===============2683933375632587249== Content-Type: multipart/signed; boundary="nextPart10767562.N0ffiQtegM"; micalg="pgp-sha512"; protocol="application/pgp-signature" --nextPart10767562.N0ffiQtegM Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" On zondag 22 januari 2017 19:30:17 CET you wrote: > One particular thing I noticed is that I get (something that looks like) a > kernel crash when booting the kernel with Xen, which I don't get when > choosing the GRUB option without Xen. > See `cknowsvr01-dmesg-with-xen.txt` vs `cknowsvr01-dmesg-without-xen.txt`. Reported it at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=852324 but given Ben Hutchings' reaction it seems to be a Xen problem after all. Relevant part of earlier attached dmesg: [ 13.588386] WARNING: CPU: 18 PID: 1 at /build/linux-zDY19G/linux-4.8.15/arch/x86/mm/dump_pagetables.c:225 note_page+0x5e8/0x790 [ 13.588388] x86/mm: Found insecure W+X mapping at address ffff880000000000/0xffff880000000000 ... [ 13.608867] x86/mm: Checked W+X mappings: FAILED, 4602 W+X pages found. --nextPart10767562.N0ffiQtegM Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. Content-Transfer-Encoding: 7Bit -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEf+PJh5LtCd6LDwjYE45BkVx+/tYFAliHee0ACgkQE45BkVx+ /tbmERAAvCGL+7IdHHT+BjPYULf08sKbqj+FYeD6m8nchA1EREX2Rod2hmH7WRee kscJ6N4kePFVEbkPYjCGez2TnopHuaZqKIKCCASP/IivqwqNJsDSkarkHFsT/a8H 3xod5PHmxGwPb9KVpSkEJB8ue4SAiBRy+KkMmd3C+GzJtKEMhM+xOU2uOPxpq4Bq R+4xPm1ITg1crrCJuGmSIxeZUGNKdyZ0RUCIJiEVQEu2GuAkLhrr+XBDeQ8dGWIk 3r9NtZLym/6nKC17Rz+B3rTZ0NjF1kIl4Lwz+bBd004IGIS4zRtZ598z5yflV/at +his/t6pVIPxr2SIGO/liZE0mNxcW3q9PvTSsLC9l0+JrgDtQo5B21kWqSte2avd buyMjwPWI1k8DOBmN9w2EgftV5x/fEVJ8J8SrNdyOLdm6wvsRsv8ozxZOVCRYs57 f2o+AoHsEHlii84+sLtlQEkeO4g5WLddIHHL+8TaUAl32Rs1TGKBcDW4aZXqXrUb fp4ZysfFqFlZYtmBscHhqG4N7fyXvY2ZzoHw3lKtOs/4pzUZHv8j2szOPHqZSp2p u8OxXiK+muUc8AN9yTnTtb8ezvcQ0sXcEs33mWcFkG5ISi3nnv518ha3l/Dwj3aT 9/ylmscXM44QO60MyIgvlZicj6m7+kuF9mUPIow4N0IryidM8Ro= =TzIn -----END PGP SIGNATURE----- --nextPart10767562.N0ffiQtegM-- --===============2683933375632587249== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVs IG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5v cmcveGVuLWRldmVsCg== --===============2683933375632587249==--