linux-kernel - Re: [PATCH 13/26] cxl/mem: Configure dynamic capacity interrupts

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Date: Tue, 9 Apr 2024 22:34:08 -0700
From: Ira Weiny <ira.weiny@...el.com>
To: Jonathan Cameron <Jonathan.Cameron@...wei.com>, <ira.weiny@...el.com>
CC: Dave Jiang <dave.jiang@...el.com>, Fan Ni <fan.ni@...sung.com>, "Navneet
 Singh" <navneet.singh@...el.com>, Dan Williams <dan.j.williams@...el.com>,
	Davidlohr Bueso <dave@...olabs.net>, Alison Schofield
	<alison.schofield@...el.com>, Vishal Verma <vishal.l.verma@...el.com>,
	<linux-btrfs@...r.kernel.org>, <linux-cxl@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 13/26] cxl/mem: Configure dynamic capacity interrupts

Jonathan Cameron wrote:
> On Sun, 24 Mar 2024 16:18:16 -0700
> ira.weiny@...el.com wrote:
> 
> > From: Navneet Singh <navneet.singh@...el.com>
> > 
> > Dynamic Capacity Devices (DCD) support extent change notifications
> > through the event log mechanism.  The interrupt mailbox commands were
> > extended in CXL 3.1 to support these notifications.
> > 
> > Firmware can't configure DCD events to be FW controlled but can retain
> > control of memory events.  Split irq configuration of memory events and
> > DCD events to allow for FW control of memory events while DCD is host
> > controlled.
> > 
> > Configure DCD event log interrupts on devices supporting dynamic
> > capacity.  Disable DCD if interrupts are not supported.
> > 
> > Signed-off-by: Navneet Singh <navneet.singh@...el.com>
> > Co-developed-by: Ira Weiny <ira.weiny@...el.com>
> > Signed-off-by: Ira Weiny <ira.weiny@...el.com>
> 
> Trivial comment inline and Fan's suggestion on the debug print seems sensible
> to me.

Ok I went ahead and added it.

> Either way
> 
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

Thanks,
Ira