On Fri, Aug 16, 2024 at 09:44:26AM -0500, 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 fo
Dave Jiang wrote:
>
>
> 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
On Fri, 16 Aug 2024 09:44:27 -0500
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.
>
>
On Thu, 22 Aug 2024 21:58:02 -0500
Ira Weiny wrote:
> Dave Jiang wrote:
> >
> >
> > 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.
> >
On Fri, 16 Aug 2024 09:44:25 -0500
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 additio
On Fri, 16 Aug 2024 09:44:24 -0500
ira.we...@intel.com wrote:
> From: Navneet Singh
>
> 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
On Fri, 16 Aug 2024 09:44:22 -0500
Ira Weiny wrote:
> Dynamic Capacity Devices (DCD) require event interrupts to process
> memory addition or removal. BIOS may have control over non-DCD event
> processing. DCD interrupt configuration needs to be separate from
> memory event interrupt configurat
On Fri, 16 Aug 2024 09:44:21 -0500
ira.we...@intel.com wrote:
> From: Navneet Singh
>
> Dynamic Capacity CXL regions must allow memory to be added or removed
> dynamically. In addition to the quantity of memory available the
> location of the memory within a DC partition is dynamic based on the
On Fri, 16 Aug 2024 09:44:20 -0500
Ira Weiny wrote:
> create_pmem_region_store() and create_ram_region_store() are identical
> with the exception of the region mode. With the addition of DC region
> mode this would end up being 3 copies of the same code.
>
> Refactor create_pmem_region_store()
On Thu, 22 Aug 2024 21:28:41 -0500
Ira Weiny wrote:
> Dave Jiang wrote:
> >
> >
> > On 8/16/24 7:44 AM, ira.we...@intel.com wrote:
> > > From: Navneet Singh
> > >
> > > To properly configure CXL regions on Dynamic Capacity Devices (DCD),
> > > user space will need to know the details of the
On Fri, 16 Aug 2024 09:44:18 -0500
ira.we...@intel.com wrote:
> From: Navneet Singh
>
> Endpoint decoder mode is used to represent the partition the decoder
> points to such as ram or pmem.
>
> Expand the mode to allow a decoder to point to a specific DC partition
> (Region).
>
> Signed-off-by
On Fri, 16 Aug 2024 09:44:17 -0500
ira.we...@intel.com wrote:
> From: Navneet Singh
>
> To support Dynamic Capacity Devices (DCD) endpoint decoders will need to
> map DC partitions (regions). In addition to assigning the size of the
> DC partition, the decoder must assign any skip value from th
On Fri, 16 Aug 2024 09:44:15 -0500
ira.we...@intel.com wrote:
> From: Navneet Singh
>
> Until now region modes and decoder modes were equivalent in that both
> modes were either PMEM or RAM. The addition of Dynamic
> Capacity partitions defines up to 8 DC partitions per device.
>
> The region
On Fri, 16 Aug 2024 09:44:14 -0500
ira.we...@intel.com wrote:
> From: Navneet Singh
>
> Devices which optionally support Dynamic Capacity (DC) are configured
> via mailbox commands. CXL 3.1 requires the host to issue the Get DC
> Configuration command in order to properly configure DCDs. Witho
On Fri, 16 Aug 2024 09:44:11 -0500
Ira Weiny wrote:
> The device DAX structure is being enhanced to track additional DCD
> information.
>
> The current range tuple was not fully documented. Document it prior to
> adding information for DC.
>
> Suggested-by: Jonathan Cameron
> Signed-off-by: I
On 8/22/24 7:28 PM, Ira Weiny wrote:
> Dave Jiang wrote:
>>
>>
>> On 8/16/24 7:44 AM, ira.we...@intel.com wrote:
>>> From: Navneet Singh
>>>
>>> To properly configure CXL regions on Dynamic Capacity Devices (DCD),
>>> user space will need to know the details of the DC partitions available.
>>>
Dave Jiang wrote:
>
>
> On 8/16/24 7:44 AM, ira.we...@intel.com wrote:
> > From: Navneet Singh
> >
[snip]
> > diff --git a/drivers/cxl/core/extent.c b/drivers/cxl/core/extent.c
> > index d7d526a51e2b..103b0bec3a4a 100644
> > --- a/drivers/cxl/core/extent.c
> > +++ b/drivers/cxl/core/extent.c
17 matches
Mail list logo
