From: Hamza Mahfooz <someguy@effective-light.com>
To: Mario Limonciello <mario.limonciello@amd.com>
Cc: dri-devel@lists.freedesktop.org,
"Harry Wentland" <harry.wentland@amd.com>,
"Leo Li" <sunpeng.li@amd.com>,
"Rodrigo Siqueira" <siqueira@igalia.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Alex Hung" <alex.hung@amd.com>, "Ray Wu" <ray.wu@amd.com>,
"Wayne Lin" <Wayne.Lin@amd.com>,
"Aurabindo Pillai" <aurabindo.pillai@amd.com>,
"Timur Kristóf" <timur.kristof@gmail.com>,
"Mario Limonciello (AMD)" <superm1@kernel.org>,
"Ivan Lipski" <ivan.lipski@amd.com>,
"Chenyu Chen" <chen-yu.chen@amd.com>,
"Matthew Schwartz" <matthew.schwartz@linux.dev>,
"Yussuf Khalil" <dev@pp3345.net>,
"Tom Chung" <chiahsuan.chung@amd.com>,
"Roman Li" <Roman.Li@amd.com>,
"Colin Ian King" <colin.i.king@gmail.com>,
"Charlene Liu" <charlene.liu@amd.com>,
"Kees Cook" <kees@kernel.org>,
amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 1/2] drm/atomic: attempt full modeset on page flip timeout
Date: Tue, 5 May 2026 14:12:47 -0400 [thread overview]
Message-ID: <afozH9lcganPCL4g@hal-station.localdomain> (raw)
In-Reply-To: <8de14305-b4bd-43eb-9025-f9d210ee125b@amd.com>
On Tue, May 05, 2026 at 10:32:57AM -0500, Mario Limonciello wrote:
>
>
> On 5/5/26 06:41, Hamza Mahfooz wrote:
> > On Mon, May 04, 2026 at 04:50:21PM -0500, Mario Limonciello wrote:
> > > Do you actually need to set all 3 of these to true?
> > >
> > > I would think you only need:
> > >
> > > crtc_state->mode_changed = true;
> > >
> >
> > According to my testing `mode_changed` on it's own is sufficient for
> > amdgpu and the documentation [1] seems to suggest that it should be fine
> > more broadly. Though, it doesn't seem harmful to set all of them just
> > for safe measure.
> >
> > [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/drm/drm_crtc.h?h=v7.1-rc2#n118
>
> My main concern was it's safe right now, but what if future changes to
> atomic control flow mean it executes more code paths than needed; or worse
> unexpected code paths.
Point taken, I'll respin this with them removed.
prev parent reply other threads:[~2026-05-05 18:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-01 20:35 [PATCH v5 1/2] drm/atomic: attempt full modeset on page flip timeout Hamza Mahfooz
2026-05-01 20:35 ` [PATCH v5 2/2] drm/amd/display: add DMU timeout recovery support Hamza Mahfooz
2026-05-04 21:51 ` Mario Limonciello
2026-05-05 16:02 ` Leo Li
2026-05-05 16:36 ` Leo Li
2026-05-05 16:41 ` Leo Li
2026-05-04 21:50 ` [PATCH v5 1/2] drm/atomic: attempt full modeset on page flip timeout Mario Limonciello
2026-05-05 11:41 ` Hamza Mahfooz
2026-05-05 15:32 ` Mario Limonciello
2026-05-05 18:12 ` Hamza Mahfooz [this message]
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