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drm/i915: Create/destroy VM (ppGTT) for use with contexts

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In preparation to making the ppGTT binding for a context explicit (to
facilitate reusing the same ppGTT between different contexts), allow the
user to create and destroy named ppGTT.

v2: Replace global barrier for swapping over the ppgtt and tlbs with a
local context barrier (Tvrtko)
v3: serialise with struct_mutex; it's lazy but required dammit
v4: Rewrite igt_ctx_shared_exec to be more different (aimed to be more
similarly, turned out different!)

v5: Fix up test unwind for aliasing-ppgtt (snb)
v6: Tighten language for uapi struct drm_i915_gem_vm_control.
v7: Patch the context image for runtime ppgtt switching!

Testcase: igt/gem_vm_create
Testcase: igt/gem_ctx_param/vm
Testcase: igt/gem_ctx_clone/vm
Testcase: igt/gem_ctx_shared
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190322092325.5883-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-03-22 09:23:23 +00:00
parent 9d1305ef80
commit e0695db729
11 changed files with 584 additions and 85 deletions
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3
drivers/gpu/drm/i915/i915_drv.h
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@@ -220,6 +220,9 @@ struct drm_i915_file_private {
struct idr context_idr;
struct mutex context_idr_lock; /* guards context_idr */
struct idr vm_idr;
struct mutex vm_idr_lock; /* guards vm_idr */
unsigned int bsd_engine;
/*