nifan@ wrote: > From: Fan Ni <ni...@outlook.com> > > The patch series provides dynamic capacity device (DCD) emulation in Qemu. > More specifically, it provides the following functionalities: > 1. Extended type3 memory device to support DC regions and extents. > 2. Implemented DCD related mailbox command support in CXL r3.0: 8.2.9.8.9. > 3. ADD QMP interfaces for adding and releasing DC extents to simulate FM > functions for DCD described in cxl r3.0: 7.6.7.6.5 and 7.6.7.6.6. > 4. Add new ct3d properties for DCD devices (host backend, number of dc > regions, etc.) > 5. Add read/write support from/to DC regions of the device. > 6. Add mechanism to validate accessed to DC region address space. >
Sorry I see them in this other thread now. https://lore.kernel.org/all/sg2pr06mb3397f3e74a083607f7492fa4b2...@sg2pr06mb3397.apcprd06.prod.outlook.com/ Thanks, Ira > A more detailed description can be found from the previously posted RFC[1]. > > Compared to the previously posted RFC[1], following changes have been made: > 1. Rebased the code on top of Jonathan's branch > https://gitlab.com/jic23/qemu/-/tree/cxl-2023-05-25. > 2. Extracted the rename of mem_size to a separated patch.(Jonathan) > 3. Reordered the patch series to improve its readability.(Jonathan) > 4. Split the validation of accesses to DC region address space as a separate > patch. > 5. Redesigned the QMP interfaces for adding and releasing DC extents to make > them easier to understand and act like existing QMP interfaces (like the > interface for cxl-inject-uncorrectable-errors). (Jonathan) > 6. Updated dvsec range register setting to support DCD devices without static > capacity. > 7. Fixed other issues mentioned in the comments (Jonathan&Nathan Fontenot). > 8. Fixed the format issues and checked with checkpatch.pl under qemu code dir. > > > The code is tested with the DCD patch series at the kernel side[2]. The test > is similar to those mentioned in the cover letter of [1]. > > > [1]: https://lore.kernel.org/all/20230511175609.2091136-1-fan...@samsung.com/ > [2]: > https://lore.kernel.org/linux-cxl/649da378c28a3_968bb29420@iweiny-mobl.notmuch/T/#t > > Fan Ni (9): > 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: 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 | 421 +++++++++++++++++++++++++++- > hw/mem/cxl_type3.c | 539 +++++++++++++++++++++++++++++++++--- > hw/mem/cxl_type3_stubs.c | 6 + > include/hw/cxl/cxl_device.h | 49 +++- > include/hw/cxl/cxl_events.h | 16 ++ > qapi/cxl.json | 49 ++++ > 6 files changed, 1034 insertions(+), 46 deletions(-) > > -- > 2.39.2 >
