Quoting Chris Wilson (2018-12-04 12:52:15)
> Quoting Christian König (2018-12-04 11:59:39)
> > -static inline bool __dma_fence_is_later(u32 f1, u32 f2)
> > +static inline bool __dma_fence_is_later(u64 f1, u64 f2)
> > {
> > - return (int)(f1 - f2) > 0;
> > + /* This is for backward
Quoting Christian König (2018-12-04 11:59:39)
> -static inline bool __dma_fence_is_later(u32 f1, u32 f2)
> +static inline bool __dma_fence_is_later(u64 f1, u64 f2)
> {
> - return (int)(f1 - f2) > 0;
> + /* This is for backward compatibility with drivers which can only
> handle
> +
在 2018/12/4 19:59, Christian König 写道:
> For a lot of use cases we need 64bit sequence numbers. Currently drivers
> overload the dma_fence structure to store the additional bits.
>
> Stop doing that and make the sequence number in the dma_fence always
> 64bit.
>
> For compatibility with hardware
For a lot of use cases we need 64bit sequence numbers. Currently drivers
overload the dma_fence structure to store the additional bits.
Stop doing that and make the sequence number in the dma_fence always
64bit.
For compatibility with hardware which can do only 32bit sequences the
comparisons in
