From: Tyrel Datwyler <tyreld@linux.ibm.com>
To: mpe@ellerman.id.au
Cc: benh@kernel.crashing.org, 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 [thread overview]
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
WARNING: multiple messages have this Message-ID (diff)
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 [thread overview]
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
next prev parent reply other threads:[~2021-04-16 18:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-02 0:13 [PATCH] powerpc/pseries: Add shutdown() to vio_driver and vio_bus Tyrel Datwyler
2021-04-02 0:13 ` Tyrel Datwyler
2021-04-16 18:46 ` Tyrel Datwyler [this message]
2021-04-16 18:46 ` Tyrel Datwyler
2021-04-17 12:30 ` Michael Ellerman
2021-04-17 12:30 ` Michael Ellerman
2021-04-19 18:30 ` Tyrel Datwyler
2021-04-19 18:30 ` Tyrel Datwyler
2021-04-20 3:42 ` Michael Ellerman
2021-04-20 3:42 ` Michael Ellerman
2021-04-21 13:08 ` Michael Ellerman
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