dcbst instruction

Mark Hatle fray at mvista.com
Tue Aug 12 01:35:23 EST 2003

Rabeeh Khoury wrote:
> Hi All,
> I have a question about the PowerPC cache line clean dcbst instruction.
> Is this instruction used at all in Linux ?
> If used, where ? kernel ? libc ? special builds of user space
> applications ?

It is used in glibc.  I have not seen off the shelf applications using
it, but I wouldn't be surprised if highly optimized apps did attempt to
use it.

As for the kernel, I would assume it's being used.. but a simple grep
should tell you if it is.


> Thanks,
> Rabeeh

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