From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A412F24BBFD for ; Wed, 8 Apr 2026 12:59:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775653160; cv=pass; b=c0CWbfhcTvz81Fuv/i6f6/S6pk4Hfe1c+X/ocpQxWZje5ajuquus/HsXU/YngZAUpFf7mb8XdwY4UNfUNgg6soCabpypTENlIUlPDA4wRkQ9ikUFW/nQa67MEaLbjaTRpouF33BVumec7TORMZB+S9wdSOFFGT7pwWBrEhWZdKc= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775653160; c=relaxed/simple; bh=grcahO2ZA0FBA38bvg/Ak2Ef4nB/0NESPkZvFwYxMP0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=JWhZpSJnVgrn+2LlWHJrRIN25Ro2GuKN3jGGsn3jc4KZg91e8mthvyu8ZmpDNYmo1NQlH0YfXBH0W4FG5tmz2Vh63YEoa5cRD528oJoAmMBGD2B63K1OlDaVbWgrRd+QK6X8b2AlA88K+qbLk3TYxTZW5p97AdKysbTLb5eFM9E= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=dmitry.osipenko@collabora.com header.b=HV7ych6j; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=dmitry.osipenko@collabora.com header.b="HV7ych6j" ARC-Seal: i=1; a=rsa-sha256; t=1775653151; cv=none; d=zohomail.com; s=zohoarc; b=hB4RBWl0XNUxhfNwxM5GkOaAUpfqOOOgj8PQNaGstdUDeiD6E/ua0f81Bf/Vi9bHZg3M+GzZdZeMO0t9sTtgP/fJBuB/zaj7ucnZFigXURhZgoXQOBjCKW3ogiwzvaP6ven7FQCxqNYWPQlR3mMH4Fiqi1lHRQh3PUBh/Q2oigM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1775653151; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=IrRNgQuD6NypyIwHQrUwBWBAE3AdmG59dnEW531MBz4=; b=aniAjb19zLc8QuBnJDGKQzWafjzi1yKMwzemrPkIDm4l9vd7eg74P2LyTOPzIV0Rcj/E2rhGLsOhRFaES86AjpVUdoymNPaq0k9DygLOjzeRVU4M07fkvyGlKhSWi3+CIwmmuPFDyQ7IRu0gFYOKMJ7MkjWXbgY/RlSLEgbYGkQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1775653151; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=Message-ID:Date:Date:MIME-Version:Subject:Subject:To:To:Cc:Cc:References:From:From:In-Reply-To:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=IrRNgQuD6NypyIwHQrUwBWBAE3AdmG59dnEW531MBz4=; b=HV7ych6jOCV/fpFQCNMiIeF3lgKkKp/9IgLZpojBBDpuyxtloZkt2Za1Tv2VEXGW 4Mjn0IZmQMMsNHrySVvf7Rk4oKJFCjKsnoaVYHiqjcdV4jVYPos4w5RVNw/lazHTuzt MLUHYO2D2JJCg3fAqv0JDV/m0fr/OHU84AL6gvVY= Received: by mx.zohomail.com with SMTPS id 177565314977182.60491801498722; Wed, 8 Apr 2026 05:59:09 -0700 (PDT) Message-ID: <2175a05a-d83f-4252-bbf8-581ae652a6b8@collabora.com> Date: Wed, 8 Apr 2026 15:59:05 +0300 Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] drm/virtgpu: Add PM support for suspend/resume To: Morris Pan , airlied@redhat.com, kraxel@redhat.com Cc: srv_heupstream@mediatek.com, gurchetansingh@chromium.org, olvaffe@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, simona@ffwll.ch, dri-devel@lists.freedesktop.org, virtualization@lists.linux.dev References: <20260401061050.1035881-1-morris.pan@mediatek.com> Content-Language: en-US From: Dmitry Osipenko In-Reply-To: <20260401061050.1035881-1-morris.pan@mediatek.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ZohoMailClient: External Hi, On 4/1/26 09:10, Morris Pan wrote: > diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c > index a5ce96fb8a1d..fbca0a82958c 100644 > --- a/drivers/gpu/drm/virtio/virtgpu_drv.c > +++ b/drivers/gpu/drm/virtio/virtgpu_drv.c > @@ -145,6 +145,40 @@ static void virtio_gpu_config_changed(struct virtio_device *vdev) > schedule_work(&vgdev->config_changed_work); > } > > +#ifdef CONFIG_PM_SLEEP > +static int virtgpu_freeze(struct virtio_device *vdev) > +{ > + vdev->config->del_vqs(vdev); > + virtio_reset_device(vdev); > + > + return 0; > +} VirtIO-GPU shouldn't be reset freely. See [1] and follow previous hibernation-support discussions on the ML. [1[ https://lore.kernel.org/dri-devel/20260107182745.229481-1-dongwon.kim@intel.com/ -- Best regards, Dmitry