Re: memory barrier in user space

mcharon@xxxxxxxxx wrote:
i have a user space driver that's accessing and initializing the
hardware.

in the kernel driver, i can call barrier() but in the user space,
how can i execute memory barrier?

i am running on MIPS and powerPC.

thank you in advance.

IIRC the barrier() macro just emitted a single instruction. You might want to look at the gcc info and the stuff about asm() in particular.

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