On Tue, Mar 01, 2022 at 11:46:13AM -0800, Iouri Tarassov wrote: > Implement ioctls to offer and reclaim compute device allocations: > - LX_DXOFFERALLOCATIONS, > - LX_DXRECLAIMALLOCATIONS2 > > When a user mode driver (UMD) does not need to access an allocation, What is a "user mode driver" in this context? Is that something that runs inside the guest? > it can "offer" it by issuing the LX_DXOFFERALLOCATIONS ioctl. This > means that the allocation is not in use and its local device memory > could be evicted. The freed space could be given to another allocation. > When the allocation is again needed, the UMD can attempt to"reclaim" > the allocation by issuing the LX_DXRECLAIMALLOCATIONS2 ioctl. If the > allocation is still not evicted, the reclaim operation succeeds and no > other action is required. If the reclaim operation fails, the caller > must restore the content of the allocation before it can be used by > the device. > > Signed-off-by: Iouri Tarassov <iourit@xxxxxxxxxxxxxxxxxxx>
