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List: dri-devel
Subject: Re: [PATCH] i915: Drop legacy execbuffer support
From: "Dixit, Ashutosh" <ashutosh.dixit () intel ! com>
Date: 2021-03-12 5:58:07
Message-ID: 87y2esj4ls.wl-ashutosh.dixit () intel ! com
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On Thu, 11 Mar 2021 20:31:33 -0800, Jason Ekstrand wrote:
> On March 11, 2021 20:26:06 "Dixit, Ashutosh" <ashutosh.dixit@intel.com> wrote:
> On Wed, 10 Mar 2021 13:00:49 -0800, Jason Ekstrand wrote:
>
> libdrm has supported the newer execbuffer2 ioctl and using it by default
> when it exists since libdrm commit b50964027bef249a0cc3d511de05c2464e0a1e22
> which landed Mar 2, 2010. The i915 and i965 drivers in Mesa at the time
> both used libdrm and so did the Intel X11 back-end. The SNA back-end
> for X11 has always used execbuffer2.
>
> Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
> ---
> .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 100 ------------------
> drivers/gpu/drm/i915/gem/i915_gem_ioctls.h | 2 -
> drivers/gpu/drm/i915/i915_drv.c | 2 +-
> 3 files changed, 1 insertion(+), 103 deletions(-)
>
> Don't we want to clean up references to legacy execbuffer in
> include/uapi/drm/i915_drm.h too?
>
> I thought about that but Daniel said we should leave them. Maybe a
> comment is in order?
No, should be ok since we are using drm_invalid_op(). If we want to delete
the unused 'struct drm_i915_gem_execbuffer' we can do that by converting
from DRM_IOW to DRM_IO in the DRM_IOCTL_I915_GEM_EXECBUFFER #define.
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