On 8/16/24 7:44 AM, Ira Weiny wrote:
> cxl_dpa_to_region() finds the region from a tuple.
> The search involves finding the device endpoint decoder as well.
>
> Dynamic capacity extent processing uses the endpoint decoder HPA
> information to calculate the HPA offset. In addition, well behave
On 8/16/24 7:44 AM, ira.we...@intel.com wrote:
> From: Navneet Singh
>
> A dynamic capacity device (DCD) sends events to signal the host for
> changes in the availability of Dynamic Capacity (DC) memory. These
> events contain extents describing a DPA range and meta data for memory
> to be ad
On 8/16/24 7:44 AM, ira.we...@intel.com wrote:
> From: Navneet Singh
>
> Extent information can be helpful to the user to coordinate memory usage
> with the external orchestrator and FM.
>
> Expose the details of region extents by creating the following
> sysfs entries.
>
> /sys/bus/
On 8/16/24 7:44 AM, Ira Weiny wrote:
> Dynamic Capacity regions must limit dev dax resources to those areas
> which have extents backing real memory. Such DAX regions are dubbed
> 'sparse' regions. In order to manage where memory is available four
> alternatives were considered:
>
> 1) Create
On 8/16/24 7:44 AM, ira.we...@intel.com wrote:
> From: Navneet Singh
>
> DAX regions which map dynamic capacity partitions require that memory be
> allowed to come and go. Recall sparse regions were created for this
> purpose. Now that extents can be realized within DAX regions the DAX
> reg
On 8/16/24 7:44 AM, ira.we...@intel.com wrote:
> From: Navneet Singh
>
> Dynamic capacity device extents may be left in an accepted state on a
> device due to an unexpected host crash. In this case it is expected
> that the creation of a new region on top of a DC partition can read
> those ex
