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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 794D6C433F5 for ; Fri, 21 Jan 2022 02:22:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378499AbiAUCWq (ORCPT ); Thu, 20 Jan 2022 21:22:46 -0500 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:34885 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348465AbiAUCWp (ORCPT ); Thu, 20 Jan 2022 21:22:45 -0500 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 99EBD5C00ED; Thu, 20 Jan 2022 21:22:44 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute4.internal (MEProxy); Thu, 20 Jan 2022 21:22:44 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=turner.link; 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=fm1; bh=4XU/BlLV/TXBXQh4V2w5kzAu/G0xNQpyok0qRK am/ys=; b=RaqvGWH6PnR5Xx0addhwKwQ31sKikf8I6iHUsTL+5beOkeqThjXYyH V0nTu8KvZ3quTvew0+mCaBBN6geH+v+LePk7VMms/NfNgjT4TMKT0cMxp8sE11De /PmIxLr5eULrgPxz8yj9IyH6m2x5tzB+uKVrsnnyWLLD5SC5/8E4PwxEIwnm9bxu +VyNBHJo6bMpwACb81O072ghmRRfHNQnOi7LLyMvBExWiAULzKwCzBLO6GXURn18 In9xx8LiagR/nR9VOtDq5lj9m0Vxx1R/WhMsf97fsWen6tXbH5mc9kaE3nYkoN6D vnoYAV6dOw/Z9NQH4EmU2k9CoeJFT8dw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.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:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=4XU/BlLV/TXBXQh4V 2w5kzAu/G0xNQpyok0qRKam/ys=; b=OQ/ub9RsnAR9lfA29lmzvM67sJ7cF676o YtjiFZfi/fIzoMqw334oGW82bmmXCL6/SJE1k5IT1Y1fCjH6myQ2sSLfZzn2BZ8V VXAGdyk6Eq4A+PjL/BXNtZ8CXHh16SoO8fBaNijennjAvAjBBmbiGEk9B8/YZyEL /8YWehitQsncYfM3nwjRSU44vASKMYnVlBqOynU/ZiaKgbtfBYtQyzUAuRt4h+8N KBOzRp+HDvXgBm2KO+ZF9Di2i2kwoTkR8tmLlBQVmnQVQq6apMuT4lKH96ePbu63 l96U27cPeYhUi905PvYQDdoecTwbtCdx6FPBm3lUKn/cZB3wOieQg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvvddrudelgdeghecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpehfhffvufffjgfkgggtsehttdertddttddtnecuhfhrohhmpeflrghmvghsucfv uhhrnhgvrhcuoehlihhnuhigkhgvrhhnvghlrdhfohhsshesughmrghrtgdqnhhonhgvrd htuhhrnhgvrhdrlhhinhhkqeenucggtffrrghtthgvrhhnpefhkeehvdevfeeiteeitdeh jeejgfegffduuefhveehhfelgefgteejuefhieetjeenucffohhmrghinhepfhhrvggvug gvshhkthhophdrohhrghdpkhgvrhhnvghlrdhorhhgnecuvehluhhsthgvrhfuihiivgep tdenucfrrghrrghmpehmrghilhhfrhhomheplhhinhhugihkvghrnhgvlhdrfhhoshhsse gumhgrrhgtqdhnohhnvgdrthhurhhnvghrrdhlihhnkh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 20 Jan 2022 21:22:44 -0500 (EST) References: <87ee57c8fu.fsf@turner.link> <87a6ftk9qy.fsf@dmarc-none.turner.link> From: James Turner To: Thorsten Leemhuis Cc: Greg KH , Alex Williamson , kvm@vger.kernel.org, regressions@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [REGRESSION] Too-low frequency limit for AMD GPU PCI-passed-through to Windows VM Date: Thu, 20 Jan 2022 21:13:06 -0500 In-reply-to: <87a6ftk9qy.fsf@dmarc-none.turner.link> Message-ID: <87zgnp96a4.fsf@turner.link> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hi all, I finished the bisection (log below). The issue was introduced in f9b7f3703ff9 ("drm/amdgpu/acpi: make ATPX/ATCS structures global (v2)"). Would any additional information be helpful? git bisect start # bad: [e73f0f0ee7541171d89f2e2491130c7771ba58d3] Linux 5.14-rc1 git bisect bad e73f0f0ee7541171d89f2e2491130c7771ba58d3 # good: [62fb9874f5da54fdb243003b386128037319b219] Linux 5.13 git bisect good 62fb9874f5da54fdb243003b386128037319b219 # bad: [e058a84bfddc42ba356a2316f2cf1141974625c9] Merge tag 'drm-next-2021-07-01' of git://anongit.freedesktop.org/drm/drm git bisect bad e058a84bfddc42ba356a2316f2cf1141974625c9 # good: [a6eaf3850cb171c328a8b0db6d3c79286a1eba9d] Merge tag 'sched-urgent-2021-06-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip git bisect good a6eaf3850cb171c328a8b0db6d3c79286a1eba9d # good: [007b312c6f294770de01fbc0643610145012d244] Merge tag 'mac80211-next-for-net-next-2021-06-25' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next git bisect good 007b312c6f294770de01fbc0643610145012d244 # bad: [18703923a66aecf6f7ded0e16d22eb412ddae72f] drm/amdgpu: Fix incorrect register offsets for Sienna Cichlid git bisect bad 18703923a66aecf6f7ded0e16d22eb412ddae72f # good: [c99c4d0ca57c978dcc2a2f41ab8449684ea154cc] Merge tag 'amd-drm-next-5.14-2021-05-19' of https://gitlab.freedesktop.org/agd5f/linux into drm-next git bisect good c99c4d0ca57c978dcc2a2f41ab8449684ea154cc # good: [43ed3c6c786d996a264fcde68dbb36df6f03b965] Merge tag 'drm-misc-next-2021-06-01' of git://anongit.freedesktop.org/drm/drm-misc into drm-next git bisect good 43ed3c6c786d996a264fcde68dbb36df6f03b965 # bad: [050cd3d616d96c3a04f4877842a391c0a4fdcc7a] drm/amd/display: Add support for SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616. git bisect bad 050cd3d616d96c3a04f4877842a391c0a4fdcc7a # good: [f43ae2d1806c2b8a0934cb4acddd3cf3750d10f8] drm/amdgpu: Fix inconsistent indenting git bisect good f43ae2d1806c2b8a0934cb4acddd3cf3750d10f8 # good: [6566cae7aef30da8833f1fa0eb854baf33b96676] drm/amd/display: fix odm scaling git bisect good 6566cae7aef30da8833f1fa0eb854baf33b96676 # good: [5ac1dd89df549648b67f4d5e3a01b2d653914c55] drm/amd/display/dc/dce/dmub_outbox: Convert over to kernel-doc git bisect good 5ac1dd89df549648b67f4d5e3a01b2d653914c55 # good: [a76eb7d30f700e5bdecc72d88d2226d137b11f74] drm/amd/display/dc/dce110/dce110_hw_sequencer: Include header containing our prototypes git bisect good a76eb7d30f700e5bdecc72d88d2226d137b11f74 # good: [dd1d82c04e111b5a864638ede8965db2fe6d8653] drm/amdgpu/swsmu/aldebaran: fix check in is_dpm_running git bisect good dd1d82c04e111b5a864638ede8965db2fe6d8653 # bad: [f9b7f3703ff97768a8dfabd42bdb107681f1da22] drm/amdgpu/acpi: make ATPX/ATCS structures global (v2) git bisect bad f9b7f3703ff97768a8dfabd42bdb107681f1da22 # good: [f1688bd69ec4b07eda1657ff953daebce7cfabf6] drm/amd/amdgpu:save psp ring wptr to avoid attack git bisect good f1688bd69ec4b07eda1657ff953daebce7cfabf6 # first bad commit: [f9b7f3703ff97768a8dfabd42bdb107681f1da22] drm/amdgpu/acpi: make ATPX/ATCS structures global (v2) James