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Re: Prezeroing V3 [4/4]: Driver for hardware zeroing on Altix
Christoph Lameter <clameter@xxxxxxx> writes:
> + /* Check limitations.
> + 1. System must be running (weird things happen during bootup)
> + 2. Size >64KB. Smaller requests cause too much bte traffic
> + */
> + if (len >= BTE_MAX_XFER || len < 60000 || system_state != SYSTEM_RUNNING)
> + return EINVAL;
surely return -EINVAL;
Also have you thought about doing a similar driver for x86/x86-64 using
cache bypassing stores?
-Andi
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