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Fri, 15 May 2026 11:09:40 -0400 (EDT) Date: Fri, 15 May 2026 17:09:46 +0200 From: Greg KH To: w15303746062@163.com Cc: louis.chauvet@bootlin.com, hamohammed.sa@gmail.com, simona@ffwll.ch, melissa.srw@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Mingyu Wang <25181214217@stu.xidian.edu.cn> Subject: Re: [PATCH 6.18.y] drm/vkms: Fix ABBA deadlock in vblank disable and timer callback Message-ID: <2026051557-thermal-petite-7da0@gregkh> References: <20260515131826.388154-1-w15303746062@163.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260515131826.388154-1-w15303746062@163.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri, May 15, 2026 at 09:18:26PM +0800, w15303746062@163.com wrote: > From: Mingyu Wang <25181214217@stu.xidian.edu.cn> > > [Note: This patch addresses a legacy VKMS implementation deadlock specific > to older stable trees (e.g., 6.18.y). Mainline has removed this code during > the generic DRM_CRTC_VBLANK_TIMER_FUNCS refactoring.] Why not apply those upstream commits here as well? No need to diverge from Linus's tree, otherwise we will end up having a mess that nothing can ever be backported to. How many commits need to be backported? Have you tried? thanks, greg k-h