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authorMichał Winiarski2015-09-09 09:07:10 -0500
committerKristian Høgsberg Kristensen2015-12-14 13:31:25 -0600
commit8b4d57e7b75cb0bd01d11ad7f597909034a316aa (patch)
treebcc8cb7e3a0a9cf1414480b24146f457600fc5af /.gitignore
parent5453f89b70dc4305f8525d5053b2704db2e0e1e7 (diff)
intel: Add support for softpin
Softpin allows userspace to take greater control of GPU virtual address space and eliminates the need of relocations. It can also be used to mirror addresses between GPU and CPU (shared virtual memory). Calls to drm_intel_bo_emit_reloc are still required to build the list of drm_i915_gem_exec_objects at exec time, but no entries in relocs are created. Self-relocs don't make any sense for softpinned objects and can indicate a programming errors, thus are forbidden. Softpinned objects are marked by asterisk in debug dumps. Cc: Thomas Daniel <thomas.daniel@intel.com> Cc: Kristian Høgsberg <krh@bitplanet.net> Cc: Zou Nanhai <nanhai.zou@intel.com> Cc: Michel Thierry <michel.thierry@intel.com> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Kristian Høgsberg <krh@bitplanet.net> Signed-off-by: Kristian Høgsberg <krh@bitplanet.net> Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
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