Maciej W. Rozycki d17af8b19d MIPS: Avoid DIVU in `__div64_32' is result would be zero ... commit c1d337d45e upstream. We already check the high part of the divident against zero to avoid the costly DIVU instruction in that case, needed to reduce the high part of the divident, so we may well check against the divisor instead and set the high part of the quotient to zero right away. We need to treat the high part the divident in that case though as the remainder that would be calculated by the DIVU instruction we avoided. This has passed correctness verification with test_div64 and reduced the module's average execution time down to 1.0445s and 0.2619s from 1.0668s and 0.2629s respectively for an R3400 CPU @40MHz and a 5Kc CPU @160MHz. Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-19 10:13:17 +02:00
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asm	MIPS: Avoid DIVU in `__div64_32' is result would be zero	2021-05-19 10:13:17 +02:00
uapi/asm	MIPS: Retire kvm paravirt	2020-07-24 10:53:23 +02:00