From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Packard Subject: Re: [PATCH] drm/i915: paper over missed irq issues with force wake vodoo Date: Tue, 10 Jan 2012 20:44:20 -0800 Message-ID: <861ur6alwb.fsf@sumi.keithp.com> References: <1325702445-2231-1-git-send-email-daniel.vetter@ffwll.ch> <20120110122006.GD3979@phenom.ffwll.local> <87fwfnnjsz.fsf@eliezer.anholt.net> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0593195861==" Return-path: Received: from keithp.com (home.keithp.com [63.227.221.253]) by gabe.freedesktop.org (Postfix) with ESMTP id 2041F9E7D9 for ; Tue, 10 Jan 2012 20:44:25 -0800 (PST) In-Reply-To: <87fwfnnjsz.fsf@eliezer.anholt.net> 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: Eric Anholt , Daniel Vetter Cc: Daniel Vetter , intel-gfx , stable@kernel.org, Eugeni Dodonov List-Id: intel-gfx@lists.freedesktop.org --===============0593195861== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" --=-=-= Content-Transfer-Encoding: quoted-printable On Tue, 10 Jan 2012 16:51:08 -0800, Eric Anholt wrote: > So they've gone out of their way to build broken stuff. Awesome. Well, in theory, the interrupt would be generated *before* the hardware goes to RC6; when idle, I'm not exactly sure what the hardware would be doing to generate interrupts. > I'd say you've found the clue here -- I'm a lot happier with going with > your patches now (and I was pretty happy with the gen7 side before). > I'd just like to not mess with gen6 unless we've got missed irq bugs > there to fix. Yeah, knowing that there might be interrupt funnies due to RC6 goes some way to explaining why just avoiding RC6 helps. I wonder if any of this might explain the RC6 issues we see on SNB on some hardware, and whether we should give this a try... I know, grasping at straws, but still, it's about all we have at this point. =2D-=20 keith.packard@intel.com --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIVAwUBTw0TpDYtFsjWk68qAQg3OQ//Xl8gZZV96yWmaQ05NN5mKHIJu/kKtAxe UFR6h2P7FEy3a4UyFQC+YAwl5hzmzSolR1QvSyY8OsNEJM9wc45LeLkKSjKFqdY1 IelGWwCFe6tcQL511klCX7r3xQlkFOKfnHr1zKlSiwljKPMf/abAeRpQ2U+Qxb3M CzA1bMKZ6GGPry37TxSZ8HnLOTf9B3JGVf4f00ER1Tk4/eI3aDvAvO3Em8Zeawxc WjTJfA8dE0tz3RE+NDwM9XlBQe5i5XXH85CG8gLv3HBBN2f4tWGjheArN4dnmZ4F 3Y+N4TK61IfedthUDt9+AP8LmR/JvryIOfgEsETBYPzqQxv0haNp+VEPu+8RpPlL m6PNSG9g1SPYeCQAJPRE2BiFivL3Rw/BYyd5/fe/wHZU6oXF8+J2FXLkWpp2hDSs SSF8KQe5Azokho99+Q5hPyoiWcSmDJLI00pz8BcHuxYP/8aDiw7Utv+7oFSUuJis 6qKdgOq4L12fVKeIhR2PT7eHLBAcTGqhqL+TmTnMSuM7s9t2IdO4afT4XV3IAULD rUkfm/5RDKvhzfdlXCSR4qGDXCywru/JbMqs7XnwnGwM5P3rMQpyfUwFqHBU/cdE vkxAp7vGTdHmdlLmvmzO62i6tA/+3/GH1iKXjcFH2jGIFs2hSukReXRc81AS3zXS guQJrwA+J4E= =vbbc -----END PGP SIGNATURE----- --=-=-=-- --===============0593195861== 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 --===============0593195861==--