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Date:   Fri, 28 Apr 2023 12:18:13 +0200
From:   Boris Brezillon <boris.brezillon@collabora.com>
To:     Danilo Krummrich <dakr@redhat.com>
Cc:     airlied@gmail.com, daniel@ffwll.ch, tzimmermann@suse.de,
        mripard@kernel.org, corbet@lwn.net, christian.koenig@amd.com,
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        matthew.brost@intel.com, alexdeucher@gmail.com, ogabbay@kernel.org,
        bagasdotme@gmail.com, willy@infradead.org, jason@jlekstrand.net,
        dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
        linux-doc@vger.kernel.org, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Dave Airlie <airlied@redhat.com>
Subject: Re: [PATCH drm-next v3 04/15] drm: manager to keep track of GPUs VA
 mappings
Message-ID: <20230428121813.309ea609@collabora.com>
In-Reply-To: <20230404012741.116502-5-dakr@redhat.com>
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        <20230404012741.116502-5-dakr@redhat.com>
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On Tue,  4 Apr 2023 03:27:30 +0200
Danilo Krummrich <dakr@redhat.com> wrote:

> +struct drm_gpuva_manager {
> +	/**
> +	 * @name: the name of the DRM GPU VA space
> +	 */
> +	const char *name;
> +
> +	/**
> +	 * @mm_start: start of the VA space
> +	 */
> +	u64 mm_start;
> +
> +	/**
> +	 * @mm_range: length of the VA space
> +	 */
> +	u64 mm_range;
> +
> +	/**
> +	 * @mtree: the &maple_tree to track GPU VA mappings
> +	 */
> +	struct maple_tree mtree;
> +
> +	/**
> +	 * @kernel_alloc_node:
> +	 *
> +	 * &drm_gpuva representing the address space cutout reserved for
> +	 * the kernel
> +	 */
> +	struct drm_gpuva kernel_alloc_node;
> +
> +	/**
> +	 * @ops: &drm_gpuva_fn_ops providing the split/merge steps to drivers
> +	 */
> +	struct drm_gpuva_fn_ops *ops;

Any reason for not making that a const object (same goes for all the
functions being passed a drm_gpuva_fn_ops)?

> +};