netdev - Re: [PATCH] net/ibmvnic: Fix EOI when running in XIVE mode.

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Date:   Sun, 13 Oct 2019 11:19:21 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     clg@...d.org
Cc:     julietk@...ux.vnet.ibm.com, tlfalcon@...ux.ibm.com,
        jallen@...ux.ibm.com, mpe@...erman.id.au,
        linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org
Subject: Re: [PATCH] net/ibmvnic: Fix EOI when running in XIVE mode.

From: Cédric Le Goater <clg@...d.org>
Date: Fri, 11 Oct 2019 07:52:54 +0200

> pSeries machines on POWER9 processors can run with the XICS (legacy)
> interrupt mode or with the XIVE exploitation interrupt mode. These
> interrupt contollers have different interfaces for interrupt
> management : XICS uses hcalls and XIVE loads and stores on a page.
> H_EOI being a XICS interface the enable_scrq_irq() routine can fail
> when the machine runs in XIVE mode.
> 
> Fix that by calling the EOI handler of the interrupt chip.
> 
> Fixes: f23e0643cd0b ("ibmvnic: Clear pending interrupt after device reset")
> Signed-off-by: Cédric Le Goater <clg@...d.org>

Applied and queued up for -stable, thanks.