netdev - Re: [PATCH v21 15/23] sfc: get endpoint decoder

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Message-ID: <1be144f4-4ebd-420b-9a09-104c3cb1a8d6@intel.com>
Date: Tue, 2 Dec 2025 09:35:02 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: PJ Waskiewicz <ppwaskie@...nel.org>,
 Alejandro Lucero Palau <alucerop@....com>, alejandro.lucero-palau@....com,
 linux-cxl@...r.kernel.org, netdev@...r.kernel.org, dan.j.williams@...el.com,
 edward.cree@....com, davem@...emloft.net, kuba@...nel.org,
 pabeni@...hat.com, edumazet@...gle.com
Cc: Martin Habets <habetsm.xilinx@...il.com>,
 Edward Cree <ecree.xilinx@...il.com>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>,
 Ben Cheatham <benjamin.cheatham@....com>
Subject: Re: [PATCH v21 15/23] sfc: get endpoint decoder

On 11/26/25 11:35 AM, PJ Waskiewicz wrote:
> Hi Alejandro,
> 
> On Wed, 2025-11-26 at 09:09 +0000, Alejandro Lucero Palau wrote:
>>
>> On 11/26/25 01:27, PJ Waskiewicz wrote:
>>> Hi Alejandro,
>>>
>>> On Wed, 2025-11-19 at 19:22 +0000, alejandro.lucero-palau@....com
>>> wrote:
>>>> From: Alejandro Lucero <alucerop@....com>

<snip>

> 
> What I'm trying to do is get the regionX object to instantiate on my
> CXL.mem memory block, so that I can remove the region, ultimately
> tearing down the decoders, and allowing me to hotplug the device.  The
> patches here seem to still assume a Type3-ish device where there's DPA
> needing to get mapped into HPA, which our devices are already allocated
> in the decoders due to the EFI_RESERVED_TYPE enumeration.  But the
> patches aren't seeing that firmware already set them up, since the
> decoders haven't been committed yet.

Can you please clarify on what you mean by "the decoders haven't been committed yet"? If the region is setup, then isn't the expectation that the decoders are committed on device?