Region ID in Initiate Dynamic Capacity Release

Region ID in Initiate Dynamic Capacity Release

[Shesha Bhushan Sreenivasamurthy]

Hello All,
   In "Initiate Dynamic Capacity Add Request", LD-ID and region-id to which capacity is added are specified. However, in case of "Initiate Dynamic Capacity Release", no region-id is specified in the request payload. However, specification says that f "Initiate Dynamic Capacity Release" command fails with "Invalid Input" if invalid region-id is specified. Is this an errata ? This is true in both CXL3.0 and CXL3.1 (draft).

Secondly, can we add capacities to 'a' LD from multiple regions, meaning, can "Initiate Dynamic Capacity Add Request", be executed twice on the same LD, with different region-ids in the two calls.

Thanks,
Shesha.

Re: Region ID in Initiate Dynamic Capacity Release

[Jonathan Cameron]

On Thu, 13 Jul 2023 21:54:47 +0000
Shesha Bhushan Sreenivasamurthy <sheshas@marvell.com> wrote:

> Hello All,
>    In "Initiate Dynamic Capacity Add Request", LD-ID and region-id to which capacity is added are specified. However, in case of "Initiate Dynamic Capacity Release", no region-id is specified in the request payload. However, specification says that f "Initiate Dynamic Capacity Release" command fails with "Invalid Input" if invalid region-id is specified. Is this an errata ? This is true in both CXL3.0 and CXL3.1 (draft).

Hi Shesha

Please do not discuss consortium draft documents on public lists.  Here we can
only talk about those that are published.

Also, these questions are probably better addressed within the CXL consortium (SSWG) anyway.

Jonathan

> 
> Secondly, can we add capacities to 'a' LD from multiple regions, meaning, can "Initiate Dynamic Capacity Add Request", be executed twice on the same LD, with different region-ids in the two calls.
> 
> Thanks,
> Shesha.

Re: [EXT] Re: Region ID in Initiate Dynamic Capacity Release

[Shesha Bhushan Sreenivasamurthy]

From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
Sent: Friday, July 14, 2023 4:37 AM
To: Shesha Bhushan Sreenivasamurthy <sheshas@marvell.com>
Cc: linux-cxl@vger.kernel.org <linux-cxl@vger.kernel.org>
Subject: [EXT] Re: Region ID in Initiate Dynamic Capacity Release 
 
External Email

----------------------------------------------------------------------
On Thu, 13 Jul 2023 21:54:47 +0000
Shesha Bhushan Sreenivasamurthy <sheshas@marvell.com> wrote:

> Hello All,
>    In "Initiate Dynamic Capacity Add Request", LD-ID and region-id to which capacity is added are specified. However, in case of "Initiate Dynamic Capacity Release", no region-id is specified in the request payload. However, specification says that f "Initiate Dynamic Capacity Release" command fails with "Invalid Input" if invalid region-id is specified. Is this an errata ? This is true in both CXL3.0 and CXL3.1 (draft).

Hi Shesha

Please do not discuss consortium draft documents on public lists.  Here we can
only talk about those that are published.

SS: Sure, what I have mentioned above is true for CXL 3.0. 

Also, these questions are probably better addressed within the CXL consortium (SSWG) anyway.

SS: Okay, I will try finding out how to contact them. If you know please let me know how to approach the consortium. That would help.

Jonathan

> 
> Secondly, can we add capacities to 'a' LD from multiple regions, meaning, can "Initiate Dynamic Capacity Add Request", be executed twice on the same LD, with different region-ids in the two calls.
> 
> Thanks,
> Shesha.