Quoting Jason A. Donenfeld (2020-04-30 23:10:16) > Sometimes it's not okay to use SIMD registers, the conditions for which > have changed subtly from kernel release to kernel release. Usually the > pattern is to check for may_use_simd() and then fallback to using > something slower in the unlikely case SIMD registers aren't available. > So, this patch fixes up i915's accelerated memcpy routines to fallback > to boring memcpy if may_use_simd() is false. > > Cc: [email protected]
The same argument as on the previous submission is that we return to the caller if we can't use movntqda as their fallback path should be faster than uncached memcpy. -Chris _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
