simple test of mapping many system memory to gpu.
before
[ RUN ] KFDMemoryTest.MMap
[ ] Using ISA for GFXIP 9.0
[ ] successfully register/map 32GB system memory to gpu
[ OK ] KFDMemoryTest.MMap (36932 ms)
after
[ RUN ] KFDMemoryTest.MMap
[ ] Using ISA for GFXIP 9.0
[ ] successfully register/map 32GB system memory to gpu
[ OK ] KFDMemoryTest.MMap (11441 ms)
So there is 11s VS 36s improvement.
Looks like we can do something similar with vm_area too.
Change-Id: I0349aacdeddec3534016d28176f0fabf632c61fc
Signed-off-by: xinhui pan <xinhui.pan@amd.com>