[Mesa-dev] [PATCH v4 05/23] anv: Add vma_heap allocators in anv_device

Scott D Phillips scott.d.phillips at intel.com
Thu May 31 18:23:47 UTC 2018

Jason Ekstrand <jason at jlekstrand.net> writes:

> From: Scott D Phillips <scott.d.phillips at intel.com>
> These will be used to assign virtual addresses to soft pinned
> buffers in a later patch.
> Two allocators are added for separate 'low' and 'high' virtual
> memory areas. Another alternative would have been to add a
> double-sided allocator, which wasn't done here just because it
> didn't appear to give any code complexity advantages.
> v2 (Scott Phillips):
>  - rename has_exec_softpin to use_softpin (Jason)
>  - Only remove bottom one page and top 4 GiB from virt (Jason)
>  - refer to comment in anv_allocator about state address + size
>    overflowing 48 bits (Jason)
>  - Mention hi/lo allocators vs double-sided allocator in
>    commit message (Chris)
>  - assign state pool memory ranges statically (Jason)
> v3 (Jason Ekstrand):
>  - Use (LOW|HIGH)_HEAP_(MIN|MAX)_ADDRESS rather than (1 << 31) for
>    determining which heap to use in anv_vma_free
>  - Only return de-canonicalized addresses to the heap
> Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>
> Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>

Reviewed-by: Scott D Phillips <scott.d.phillips at intel.com>

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