Thread (2 messages) 2 messages, 2 authors, 2017-11-14

Re: [1/2] crypto/nx: Use percpu send window for NX requests

From: Michael Ellerman <hidden>
Date: 2017-11-14 11:12:04
Also in: linux-crypto

On Mon, 2017-09-25 at 06:43:02 UTC, Haren Myneni wrote:
[PATCH 1/2] crypto/nx: Use percpu send window for NX requests

For P9 NX, the send window is opened for each crypto session and closed
upon free. But VAS supports 64K windows per chip for all coprocessors
including in user space support. So there is a possibility of not
getting the window for kernel requests.

This patch reserves windows for each coprocessor type (NX842) and are
available forever for kernel requests, Opens each window for each CPU
on the corresponding chip during driver initialization. So then use the
percpu txwin for NX requests depends on the CPU on which the process
is executing.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
Series applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/976dd6490b1b45727733a3ee1e25e1

cheers
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