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drm/doc/rfc: Mark GPU VA as complete.

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Nouveau has landed the GPU VA helpers, support and documentation
already and Xe is already using the upstream GPU VA.

Link: ea4ae69e66
Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/commits/drm-xe-next?ref_type=heads
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230829163005.54067-4-rodrigo.vivi@intel.com
This commit is contained in:
Rodrigo Vivi 2023-08-29 12:30:04 -04:00
parent 3d06add933
commit e4a0fbdd85
1 changed files with 18 additions and 18 deletions
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36
Documentation/gpu/rfc/xe.rst
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@ -88,24 +88,6 @@ depend on any other patch touching drm_scheduler itself that was not yet merged
through drm-misc. This, by itself, already includes the reach of an agreement for
uniform 1 to 1 relationship implementation / usage across drivers.
GPU VA
------
Two main goals of Xe are meeting together here:
1) Have an uAPI that aligns with modern UMD needs.
2) Early upstream engagement.
RedHat engineers working on Nouveau proposed a new DRM feature to handle keeping
track of GPU virtual address mappings. This is still not merged upstream, but
this aligns very well with our goals and with our VM_BIND. The engagement with
upstream and the port of Xe towards GPUVA is already ongoing.
As a key measurable result, Xe needs to be aligned with the GPU VA and working in
our tree. Missing Nouveau patches should *not* block Xe and any needed GPUVA
related patch should be independent and present on dri-devel or acked by
maintainers to go along with the first Xe pull request towards drm-next.
ASYNC VM_BIND
-------------
Although having a common DRM level IOCTL for VM_BIND is not a requirement to get
@ -230,3 +212,21 @@ Xe merged, it is mandatory to enforce the overall locking scheme for all major
structs and list (so vm and vma). So, a consensus is needed, and possibly some
common helpers. If helpers are needed, they should be also documented in this
document.
GPU VA
------
Two main goals of Xe are meeting together here:
1) Have an uAPI that aligns with modern UMD needs.
2) Early upstream engagement.
RedHat engineers working on Nouveau proposed a new DRM feature to handle keeping
track of GPU virtual address mappings. This is still not merged upstream, but
this aligns very well with our goals and with our VM_BIND. The engagement with
upstream and the port of Xe towards GPUVA is already ongoing.
As a key measurable result, Xe needs to be aligned with the GPU VA and working in
our tree. Missing Nouveau patches should *not* block Xe and any needed GPUVA
related patch should be independent and present on dri-devel or acked by
maintainers to go along with the first Xe pull request towards drm-next.