From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7F6F9C3DA78 for ; Tue, 17 Jan 2023 11:37:36 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id C383E66BE; Tue, 17 Jan 2023 12:36:44 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C383E66BE DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1673955454; bh=ZZnlx+fiAIa1hHC+wb9mQ2QzM1+QK1mDk28ozms0aSk=; h=Date:From:To:Subject:References:In-Reply-To:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: Cc:From; b=oq6GPthJowLM486iw4tu5bXo3nGbd+yfF6EKzxxjIFaYkpGZCMdZnvIYyic181Xyl kxqGcgmcODbKiFaYrItnDLN0sOAoNMdvv3NrB3NG2KV1t+QaiehSzjwuCfGjEw0Vvb J3dtCj5T5RtjGbQ0owQwbQ48qZac1JBWUkIvjFBY= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 76DE9F8026D; Tue, 17 Jan 2023 12:36:44 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id E135BF8026D; Tue, 17 Jan 2023 12:36:42 +0100 (CET) Received: from wout5-smtp.messagingengine.com (wout5-smtp.messagingengine.com [64.147.123.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 7EA6BF8023A for ; Tue, 17 Jan 2023 12:36:35 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 7EA6BF8023A Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=invisiblethingslab.com header.i=@invisiblethingslab.com header.a=rsa-sha256 header.s=fm3 header.b=QgTkUG0U; dkim=pass (2048-bit key, unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm3 header.b=YyVmTUJC Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.west.internal (Postfix) with ESMTP id 6269C32003D3; Tue, 17 Jan 2023 06:36:33 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Tue, 17 Jan 2023 06:36:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= invisiblethingslab.com; h=cc:cc:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm3; t=1673955392; x= 1674041792; bh=R3m2l1d/UJk+kClBwPuUtaUx1HBlk+z1iZUm61ODlcw=; b=Q gTkUG0UYFjM15QTlpUwBV3IfpYtzmjTPuCRmbLpnyQP/4OZ2p7oCMGFs3nqtJu3u t8aX05bxJIXqvKk0dJWbfgngPZUz7LdHTbJ7+OHj6OmCdrjMPTIb3MljMzHJqLCc BWGltSabLnlsV25k8+E7mZreccopssgF+AnwL1uOu8q7s66A6A397B28I/uL41UO Gq93x/VGbnRJtZzKfgrvPlNWYIBqjxV+T4A0EBuLip78QoFz4QhSzXwK0jMo2xfo Tm6U4mLipZ4NhjRwPlKlUAxIkjfFCc2T4dASRZiXkamnhqETcHk7ErrmJWuvaQkf 8d61Oy7OUYvIh3fcjbCtQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:date:date:feedback-id :feedback-id:from:from:in-reply-to:in-reply-to:message-id :mime-version:references:reply-to:sender:subject:subject:to:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; t=1673955392; x=1674041792; bh=R3m2l1d/UJk+kClBwPuUtaUx1HBl k+z1iZUm61ODlcw=; b=YyVmTUJCVL0fUGqAZxawcDN4Behe8GQUQsaxLbXT7UUm 4dwoSkZV1H6fksCkNTGTK2GDL+B9xtMvdfNjZr3GeHgepozf4W4M2Ao5ML4+xnAc hjhiTwliVKWpgU/EoEFXt/vnaFM3/FW3tU1hl+SY2cVjni8jR/DEiDjvuIiAK6LV +bdKqYQysZlK1+zwZ1S5i0ivd7SflUsZvK2jAB3PFI0OvSXSEOn7pgcz1bZw4NYr ba50z35JXhYEnISj48BOuzMBIqQCHlUoUMQqUQ6I2+Pr6UGXQUTnG5lgy8oo15Ra UZX6lN51fx/pIC/N2X5DctA2Fhx3+L9ljrL3Eht9Fw== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedruddtiedgvdekucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvfevuffkfhggtggujgesghdtreertddtjeenucfhrhhomhepofgrrhgv khcuofgrrhgtiiihkhhofihskhhiqdfikphrvggtkhhiuceomhgrrhhmrghrvghksehinh hvihhsihgslhgvthhhihhnghhslhgrsgdrtghomheqnecuggftrfgrthhtvghrnhepieel uddvkeejueekhfffteegfeeiffefjeejvdeijedvgfejheetuddvkeffudeinecuffhomh grihhnpehkvghrnhgvlhdrohhrghenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgr mhepmhgrihhlfhhrohhmpehmrghrmhgrrhgvkhesihhnvhhishhisghlvghthhhinhhgsh hlrggsrdgtohhm X-ME-Proxy: Feedback-ID: i1568416f:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Tue, 17 Jan 2023 06:36:31 -0500 (EST) Date: Tue, 17 Jan 2023 12:36:28 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Takashi Iwai Subject: Re: Intel HD Audio: sound stops working in Xen PV dom0 in >=5.17 Message-ID: References: <87tu256lqs.wl-tiwai@suse.de> <87o7rv507o.wl-tiwai@suse.de> <87bkmya2zk.wl-tiwai@suse.de> <87tu0p8uda.wl-tiwai@suse.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="tBSJwXWMvExu6qqg" Content-Disposition: inline In-Reply-To: <87tu0p8uda.wl-tiwai@suse.de> X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, Harald Arnesen , Alex Xu Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" --tBSJwXWMvExu6qqg Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Tue, 17 Jan 2023 12:36:28 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Takashi Iwai Cc: alsa-devel@alsa-project.org, Alex Xu , Harald Arnesen , Jaroslav Kysela Subject: Re: Intel HD Audio: sound stops working in Xen PV dom0 in >=5.17 On Tue, Jan 17, 2023 at 08:58:57AM +0100, Takashi Iwai wrote: > On Mon, 16 Jan 2023 16:55:11 +0100, > Takashi Iwai wrote: > >=20 > > On Tue, 27 Dec 2022 16:26:54 +0100, > > Marek Marczykowski-G=C3=B3recki wrote: > > >=20 > > > On Thu, Dec 22, 2022 at 09:09:15AM +0100, Takashi Iwai wrote: > > > > On Sat, 10 Dec 2022 17:17:42 +0100, > > > > Marek Marczykowski-G=C3=B3recki wrote: > > > > >=20 > > > > > On Sat, Dec 10, 2022 at 02:00:06AM +0100, Marek Marczykowski-G=C3= =B3recki wrote: > > > > > > On Fri, Dec 09, 2022 at 01:40:15PM +0100, Marek Marczykowski-G= =C3=B3recki wrote: > > > > > > > On Fri, Dec 09, 2022 at 09:10:19AM +0100, Takashi Iwai wrote: > > > > > > > > On Fri, 09 Dec 2022 02:27:30 +0100, > > > > > > > > Marek Marczykowski-G=C3=B3recki wrote: > > > > > > > > >=20 > > > > > > > > > Hi, > > > > > > > > >=20 > > > > > > > > > Under Xen PV dom0, with Linux >=3D 5.17, sound stops work= ing after few > > > > > > > > > hours. pavucontrol still shows meter bars moving, but the= speakers > > > > > > > > > remain silent. At least on some occasions I see the follo= wing message in > > > > > > > > > dmesg: > > > > > > > > >=20 > > > > > > > > > [ 2142.484553] snd_hda_intel 0000:00:1f.3: Unstable LPI= B (18144 >=3D 6396); disabling LPIB delay counting > > > > > >=20 > > > > > > Hit the issue again, this message did not appear in the log (or= at least > > > > > > not yet). > > > > > >=20 > > > > > > (...) > > > > > >=20 > > > > > > > > In anyway, please check the behavior with 6.1-rc8 + the com= mit > > > > > > > > cc26516374065a34e10c9a8bf3e940e42cd96e2a > > > > > > > > ALSA: memalloc: Allocate more contiguous pages for fall= back case > > > > > > > > from for-next of my sound git tree (which will be in 6.2-rc= 1). > > > > > >=20 > > > > > > This did not helped. > > > > > >=20 > > > > > > > Looking at the mentioned commits, there is one specific aspec= t of Xen PV > > > > > > > that may be relevant. It configures PAT differently than nati= ve Linux. > > > > > > > Theoretically Linux adapts automatically and using proper API= (like > > > > > > > set_memory_wc()) should just work, but at least for i915 driv= er it > > > > > > > causes issues (not fully tracked down yet). Details about tha= t bug > > > > > > > report include some more background: > > > > > > > https://lore.kernel.org/intel-gfx/Y5Hst0bCxQDTN7lK@mail-itl/ > > > > > > >=20 > > > > > > > Anyway, I have tested it on a Xen modified to setup PAT the s= ame way as > > > > > > > native Linux and the audio issue is still there. > > > > > > >=20 > > > > > > > > If the problem persists, another thing to check is the hack= below > > > > > > > > works. > > > > > >=20 > > > > > > Trying this one now. > > > > >=20 > > > > > And this one didn't either :/ > > > >=20 > > > > (Sorry for the late reply, as I've been off in the last weeks.) > > > >=20 > > > > I think the hack doesn't influence on the PCM buffer pages, but only > > > > about BDL pages. Could you check the patch below instead? > > > > It'll disable the SG-buffer handling on x86 completely.=20 > > >=20 > > > This seems to "fix" the issue, thanks! > > > I guess I'll run it this way for now, but a proper solution would be > > > nice. Let me know if I can collect any more info that would help with > > > that. > >=20 > > Then we seem to go back again with the coherent memory allocation for > > the fallback sg cases. It was changed because the use of > > dma_alloc_coherent() caused a problem with IOMMU case for retrieving > > the page addresses, but since the commit 9736a325137b, we essentially > > avoid the fallback when IOMMU is used, so it should be fine again. > >=20 > > Let me know if the patch like below works for you instead of the > > previous hack to disable SG-buffer (note: totally untested!) >=20 > Gah, there was an obvious typo, scratch that. >=20 > Below is a proper patch. Please try this one instead. Thanks, I'll give it a try. --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --tBSJwXWMvExu6qqg Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmPGiDwACgkQ24/THMrX 1yzv/Qf/eDTJdU/uyQdVRJKKisDDUqvRdi597RqrvRllsSexAqZVlWa+fm0CvY7z rQnRgk9i09eQ6S6wXbq5sL2hAj+XPClLOPJzamjSesfnBUofaB6rvUFOGw2BPySz wTcz/SUjVuYjGJv0TmmVebWIFaycFay6/YcI5y9XVrlQYgSGiMx+RShefIvumc7z uEclp47UM1hnnZsFROgUdDWNVVenv1Q6qXtWCbcX9anW/E2A+3rpI5fWzqrI3JS2 4QMK/knysWrgRi9rOzx1i1wKOB20TZnCOKqmoFmLWEEg/ptYXQZd3upr7ciry5/7 kzaw38ea8eqydnaUzAeP3pWmkPWGVg== =tt4I -----END PGP SIGNATURE----- --tBSJwXWMvExu6qqg--