From: nifan.cxl@gmail.com
To: qemu-devel@nongnu.org
Cc: jonathan.cameron@huawei.com, linux-cxl@vger.kernel.org,
gregory.price@memverge.com, ira.weiny@intel.com,
dan.j.williams@intel.com, a.manzanares@samsung.com,
dave@stgolabs.net, nmtadam.samsung@gmail.com,
nifan.cxl@gmail.com, jim.harris@samsung.com,
Fan Ni <fan.ni@samsung.com>
Subject: [PATCH v4 00/10] Enabling DCD emulation support in Qemu
Date: Wed, 21 Feb 2024 10:15:53 -0800 [thread overview]
Message-ID: <20240221182020.1086096-1-nifan.cxl@gmail.com> (raw)
From: Fan Ni <fan.ni@samsung.com>
v3[1]->v4:
The code is rebased on mainstream QEMU with the following patch series:
hw/cxl/mailbox: change CCI cmd set structure to be a member, not a reference
hw/cxl/mailbox: interface to add CCI commands to an existing CCI
Main changes include:
1. Updated the specification references to align with cxl spec r3.1.
2. Add extra elements to get dc region configuration output payload and
procecced accordingly in mailbox command 4800h.
3. Removed the unwanted space.
4. Refactored ct3_build_cdat_entries_for_mr and extract it as a separate patch.
5. Updated cxl_create_dc_regions function to derive region len from host
backend size.
6. Changed the logic for creating DC regions when host backend and address
space processing is introduced, now cxl_create_dc_regions is called only
when host backend exists.
7. Updated the name of the definitions related to DC extents for consistency.
7. Updated dynamic capacity event record definition to align with spec r3.1.
9. Changed the dynamic capacity request process logic, for release request,
extra checks are done against the pending list to remove the extent yet added.
10. Changed the return value of cxl_create_dc_regions so the return can be used
to Remove the extent for the list if needed.
11. offset and size in the qmp interface are changed to be byte-wise while the
original is MiB-wise.
12. Fixed bugs in handling bitmap for dpa range existence.
13. NOTE: in previous version DC is set to non-volatile, while in this version
we change it to volatile per Jonathan's suggestion.
14. Updated the doc in qapi/cxl.json.
Thank Jonathan for the detailed review of the last version[1].
The code is tested with Ira's last kernel DCD patch set [2] with some minor
bug fixes[3]. Tested operations include:
1. create DC region;
2. Add/release DC extents;
3. convert DC capacity into system RAM (no real read/write to DCD tested);
v3:
[1] https://lore.kernel.org/linux-cxl/20231107180907.553451-1-nifan.cxl@gmail.com/T/#t
[2] https://github.com/weiny2/linux-kernel/tree/dcd-v3-2023-10-30
[3] https://github.com/moking/linux-dcd/commit/9d24fa6e5d39f934623220953caecc080f93e964
Fan Ni (10):
hw/cxl/cxl-mailbox-utils: Add dc_event_log_size field to output
payload of identify memory device command
hw/cxl/cxl-mailbox-utils: Add dynamic capacity region representative
and mailbox command support
include/hw/cxl/cxl_device: Rename mem_size as static_mem_size for
type3 memory devices
hw/mem/cxl_type3: Add support to create DC regions to type3 memory
devices
hw/mem/cxl-type3: Refactor ct3_build_cdat_entries_for_mr to take mr
size insead of mr as argument
hw/mem/cxl_type3: Add host backend and address space handling for DC
regions
hw/mem/cxl_type3: Add DC extent list representative and get DC extent
list mailbox support
hw/cxl/cxl-mailbox-utils: Add mailbox commands to support add/release
dynamic capacity response
hw/cxl/events: Add qmp interfaces to add/release dynamic capacity
extents
hw/mem/cxl_type3: Add dpa range validation for accesses to DC regions
hw/cxl/cxl-mailbox-utils.c | 507 +++++++++++++++++++++++++++++++-
hw/mem/cxl_type3.c | 559 +++++++++++++++++++++++++++++++++---
hw/mem/cxl_type3_stubs.c | 14 +
include/hw/cxl/cxl_device.h | 61 +++-
include/hw/cxl/cxl_events.h | 18 ++
qapi/cxl.json | 61 +++-
6 files changed, 1174 insertions(+), 46 deletions(-)
--
2.43.0
next reply other threads:[~2024-02-21 18:21 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-21 18:15 nifan.cxl [this message]
2024-02-21 18:15 ` [PATCH v4 01/10] hw/cxl/cxl-mailbox-utils: Add dc_event_log_size field to output payload of identify memory device command nifan.cxl
2024-02-21 18:15 ` [PATCH v4 02/10] hw/cxl/cxl-mailbox-utils: Add dynamic capacity region representative and mailbox command support nifan.cxl
2024-02-26 17:33 ` Jonathan Cameron
2024-02-26 19:16 ` fan
2024-03-04 12:40 ` Jørgen Hansen
2024-03-04 17:35 ` fan
2024-02-21 18:15 ` [PATCH v4 03/10] include/hw/cxl/cxl_device: Rename mem_size as static_mem_size for type3 memory devices nifan.cxl
2024-02-21 18:15 ` [PATCH v4 04/10] hw/mem/cxl_type3: Add support to create DC regions to " nifan.cxl
2024-02-26 17:38 ` Jonathan Cameron
2024-03-04 13:10 ` Jørgen Hansen
2024-03-04 17:31 ` fan
2024-02-21 18:15 ` [PATCH v4 05/10] hw/mem/cxl-type3: Refactor ct3_build_cdat_entries_for_mr to take mr size insead of mr as argument nifan.cxl
2024-02-21 18:15 ` [PATCH v4 06/10] hw/mem/cxl_type3: Add host backend and address space handling for DC regions nifan.cxl
2024-02-26 17:45 ` Jonathan Cameron
2024-02-21 18:16 ` [PATCH v4 07/10] hw/mem/cxl_type3: Add DC extent list representative and get DC extent list mailbox support nifan.cxl
2024-02-23 7:16 ` Wonjae Lee
2024-02-23 16:56 ` fan
2024-02-26 17:48 ` Jonathan Cameron
2024-02-21 18:16 ` [PATCH v4 08/10] hw/cxl/cxl-mailbox-utils: Add mailbox commands to support add/release dynamic capacity response nifan.cxl
2024-02-23 9:10 ` Wonjae Lee
2024-02-26 18:04 ` Jonathan Cameron
2024-02-27 1:01 ` fan
2024-02-27 10:39 ` Jonathan Cameron
2024-03-01 3:56 ` fan
2024-03-06 14:58 ` Jonathan Cameron
2024-02-27 1:06 ` fan
2024-02-21 18:16 ` [PATCH v4 09/10] hw/cxl/events: Add qmp interfaces to add/release dynamic capacity extents nifan.cxl
2024-02-23 12:16 ` Wonjae Lee
2024-02-26 18:10 ` Jonathan Cameron
2024-02-21 18:16 ` [PATCH v4 10/10] hw/mem/cxl_type3: Add dpa range validation for accesses to DC regions nifan.cxl
[not found] ` <CGME20240221182126epcas2p1b684f9239e4262f17ff484939658a382@epcms2p1>
2024-02-22 7:45 ` [PATCH v4 02/10] hw/cxl/cxl-mailbox-utils: Add dynamic capacity region representative and mailbox command support Wonjae Lee
2024-02-22 16:54 ` fan
[not found] ` <CGME20240221182137epcas2p276d22514caaa9412d0119ded6f9a63d4@epcms2p3>
2024-02-22 9:22 ` [PATCH v4 06/10] hw/mem/cxl_type3: Add host backend and address space handling for DC regions Wonjae Lee
2024-02-22 16:56 ` fan
2024-02-23 18:05 ` [PATCH v4 00/10] Enabling DCD emulation support in Qemu fan
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