Re: [PATCH] cxl/mbox: Add the CXL 4.0 command return codes 001Fh and 0020h

[Alison Schofield]

On Thu, Oct 15, 2026 at 08:17:19AM -0700, Dave Jiang wrote:
> 
> 
> On 10/15/26 1:42 AM, 黄高彬 wrote:
> > Hi Richard,
> > 
> >> Do we have users for them ? or potential users ?
> > 
> > I checked the related code, and the honest answer is no for both today.


Hi Gaobin,

I apologize for the bad suggestion here.

So, devices will return codes Linux doesn't recognize and your other
patch [1]  protects against that. As others responded here, we'll
add the new codes when we need them, not before.

https://lore.kernel.org/linux-cxl/3ed8f5db3f21c937d8783f31ee6faca3703ba72a.1791949910.git.alison.schofield@xxxxxxxxx/

-- Alison