linux-kernel - Re: [PATCH v10 04/11] drm/i915/gem: selftest should not attempt mmap of private regions

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Date:   Fri, 8 Jul 2022 08:53:43 +0100
From:   Matthew Auld <matthew.auld@...el.com>
To:     Robert Beckett <bob.beckett@...labora.com>,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     kernel@...labora.com,
        Thomas Hellström 
        <thomas.hellstrom@...ux.intel.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v10 04/11] drm/i915/gem: selftest should not attempt mmap
 of private regions

On 07/07/2022 21:02, Robert Beckett wrote:
> During testing make can_mmap consider whether the region is private.

Do we still need this with: 938d2fd17d17 ("drm/i915/selftests: skip the 
mman tests for stolen") ?

> 
> Signed-off-by: Robert Beckett <bob.beckett@...labora.com>
> Reviewed-by: Thomas Hellström <thomas.hellstrom@...ux.intel.com>
> ---
>   drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
> index 5bc93a1ce3e3..76181e28c75e 100644
> --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
> +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
> @@ -869,6 +869,9 @@ static bool can_mmap(struct drm_i915_gem_object *obj, enum i915_mmap_type type)
>   	struct drm_i915_private *i915 = to_i915(obj->base.dev);
>   	bool no_map;
>   
> +	if (obj->mm.region && obj->mm.region->private)
> +		return false;
> +
>   	if (obj->ops->mmap_offset)
>   		return type == I915_MMAP_TYPE_FIXED;
>   	else if (type == I915_MMAP_TYPE_FIXED)