From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Packard Subject: Re: [PATCH 1/2] drm/i915: re-enable semaphores by default Date: Wed, 16 Nov 2011 13:37:10 -0800 Message-ID: References: <1321303155-12624-1-git-send-email-eugeni.dodonov@intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0642392926==" Return-path: Received: from keithp.com (home.keithp.com [63.227.221.253]) by gabe.freedesktop.org (Postfix) with ESMTP id ACBE39E7E7 for ; Wed, 16 Nov 2011 13:37:14 -0800 (PST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Daniel Vetter Cc: intel-gfx@lists.freedesktop.org, Eugeni Dodonov List-Id: intel-gfx@lists.freedesktop.org --===============0642392926== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" --=-=-= Content-Transfer-Encoding: quoted-printable On Wed, 16 Nov 2011 21:18:13 +0100, Daniel Vetter = wrote: > Last time I've played around with all the combinations, only > intel_iommu=3Doff was good enough to prevent the hang. > intel_iommu=3Digd_off still hangs (which is what the current value > exported by the dmar code dopends on, iirc). If I remember things > correctly, intel_iommu=3Doff also reliably works around issues for all > reporters (both semaphores and rc6). So, the dmar_disabled flag would suffice? Should be trivial to export that and check in our driver. =2D-=20 keith.packard@intel.com --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIVAwUBTsQtBjYtFsjWk68qAQj73hAAiA1M7hbiVE7fIejZl00QZHPxVqWpDMnt XptYAUsjO6uPs1NsUQigHRrNTuYQGRXDTAM+FRd6VbQwX2vLMnpT+ouIbD8NxIq6 Ge8Z/kBEnQVd0oDDTBilpyQWqJGiaEgOSRzqpiwtMckCpDLgHl85tdbAW3a+UYur MpE3cnGpPlh5wYoefzrf1SpcV+RH2CNArkMYkQJZrTTlsB4E4KIvdgIv1zVh+rHn c9cI/jB7gcE24LWiSYA9vqrkLUivgkF7BPxXIp2ziU1DdpNtVfT9/KlaX+GYlPos x0ghf8I2aEJaYKXN2E9DzQuY7+52ZRN3Vmqi8jTf+ivH3ziKxYJLjyd36Vt6fy6o deUBvhLGiXGU3wSigAruYfhQyp7s5JShtSR8MnBQU30aykvRWGcBirg5YrrKT2Bp GhzZVnH/69Tr6yLmI/m68zWgUpNTIeJH50fKv9HH+Y7ZbuWErM+XUQiufX66LFm8 0HlL2thjMONBSw9hansSCtfIfSKkZtfAG726sEL4RPe9qYh0OyoKeNZIw5YDBuzC RqVVnUY5OYcjhTQ94wW7XafJoVnGYbBbZKpnbROw/mPN7O0UdB9IkBLbthuZMDVo IddOKFsgRzct/AMn9Kfh4CNHeMByCXyhmbHSJlxBqeyKXTZUvoNDpUggKS9qelqK dX5FprZbAY4= =J/NO -----END PGP SIGNATURE----- --=-=-=-- --===============0642392926== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx --===============0642392926==--