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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 93AA6FD0049 for ; Sun, 1 Mar 2026 01:30:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3B97310E310; Sun, 1 Mar 2026 01:30:09 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="DjYFQDZ8"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id EC0EA10E30C; Sun, 1 Mar 2026 01:30:07 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id CE3D04091C; Sun, 1 Mar 2026 01:30:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0FD31C19421; Sun, 1 Mar 2026 01:30:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772328607; bh=jtPjgZotmkGjkEoVrFy4o7JD5HiRCQMyZAzh2CSCv5A=; h=From:To:Cc:Subject:Date:From; b=DjYFQDZ8oeVJ8ffM8riltlLa5dgib0Zo/+aLlA3YzOsW0oFriiLrwXIrwB+vtuKvv TlPogMURh3xUP+yYkaLagoU/iqhdUrYGReDpWpxDNdarYoontSDsfE7Bs8uL4dNjY5 poB48xq5n3IF+h+L6cDKyjleC5E+w0dESRg11nuD+Vs/6kH0d2Y8VN+BbD08RmBxJW 0vwm8x5ATi4JtnEYccu4YygttwqEnxrjhwUYOKiy1TlVCBF6nvT5gHqjeHyPKmRpYZ urltV36X8fsI4mIZrLG7/5D8+x6rL5FYYcIN1rccAi1rehcpzxbqKfk89mqxKlfkQv d0dv9/0fOJTvg== From: Sasha Levin To: stable@vger.kernel.org, ville.syrjala@linux.intel.com Cc: =?UTF-8?q?Jouni=20H=C3=B6gander?= , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: FAILED: Patch "drm/i915/psr: Reject async flips when selective fetch is enabled" failed to apply to 6.6-stable tree Date: Sat, 28 Feb 2026 20:30:05 -0500 Message-ID: <20260301013005.1688048-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From a5f0cc8e0cd4007370af6985cb152001310cf20c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 5 Nov 2025 19:10:15 +0200 Subject: [PATCH] drm/i915/psr: Reject async flips when selective fetch is enabled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The selective fetch code doesn't handle asycn flips correctly. There is a nonsense check for async flips in intel_psr2_sel_fetch_config_valid() but that only gets called for modesets/fastsets and thus does nothing for async flips. Currently intel_async_flip_check_hw() is very unhappy as the selective fetch code pulls in planes that are not even async flips capable. Reject async flips when selective fetch is enabled, until someone fixes this properly (ie. disable selective fetch while async flips are being issued). Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä Link: https://patch.msgid.link/20251105171015.22234-1-ville.syrjala@linux.intel.com Reviewed-by: Jouni Högander --- drivers/gpu/drm/i915/display/intel_display.c | 8 ++++++++ drivers/gpu/drm/i915/display/intel_psr.c | 6 ------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 6c8a7f63111ec..7aff2785521b7 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -6002,6 +6002,14 @@ static int intel_async_flip_check_uapi(struct intel_atomic_state *state, return -EINVAL; } + /* FIXME: selective fetch should be disabled for async flips */ + if (new_crtc_state->enable_psr2_sel_fetch) { + drm_dbg_kms(display->drm, + "[CRTC:%d:%s] async flip disallowed with PSR2 selective fetch\n", + crtc->base.base.id, crtc->base.name); + return -EINVAL; + } + for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { if (plane->pipe != crtc->pipe) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 00ac652809cca..08bca45739749 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1301,12 +1301,6 @@ static bool intel_psr2_sel_fetch_config_valid(struct intel_dp *intel_dp, return false; } - if (crtc_state->uapi.async_flip) { - drm_dbg_kms(display->drm, - "PSR2 sel fetch not enabled, async flip enabled\n"); - return false; - } - return crtc_state->enable_psr2_sel_fetch = true; } -- 2.51.0