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SubjectRe: [PATCH] x86: Optimise x86 IP checksum code
On Tue, Dec 03, 2019 at 11:52:09AM +0000, David Laight wrote:

> I did get about 12 bytes/clock using adox/adcx but that would need run-time
> patching and some AMD cpu that support the instructions run them very slowly.

Isn't that was we have alternative_call() for?

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