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From: Tyrel Datwyler <tyreld@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/pseries: Add shutdown() to vio_driver and vio_bus
Date: Fri, 16 Apr 2021 11:46:50 -0700
Message-ID: <f326def4-0db0-f924-1700-dd7be3154153@linux.ibm.com> (raw)
In-Reply-To: <20210402001325.939668-1-tyreld@linux.ibm.com>

On 4/1/21 5:13 PM, Tyrel Datwyler wrote:
> Currently, neither the vio_bus or vio_driver structures provide support
> for a shutdown() routine.
> 
> Add support for shutdown() by allowing drivers to provide a
> implementation via function pointer in their vio_driver struct and
> provide a proper implementation in the driver template for the vio_bus
> that calls a vio drivers shutdown() if defined.
> 
> In the case that no shutdown() is defined by a vio driver and a kexec is
> in progress we implement a big hammer that calls remove() to ensure no
> further DMA for the devices is possible.
> 
> Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
> ---

Ping... any comments, problems with this approach?

-Tyrel

  reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-02  0:13 Tyrel Datwyler
2021-04-16 18:46 ` Tyrel Datwyler [this message]
2021-04-17 12:30   ` Michael Ellerman
2021-04-19 18:30     ` Tyrel Datwyler
2021-04-20  3:42       ` Michael Ellerman
2021-04-21 13:08 ` Michael Ellerman

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