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Merge pull request #261 from weiny2/patch-2
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Meeting notes/updates
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stellarhopper authored Feb 29, 2024
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## QEMU

* Status
* 2 patch sets to pick up; bunch of fixes
* Not clear spec versions so update those to 3.1

* Fan's next DCD version; close
* Some minor issues
* Would like to land 9.0 cycle (Aprox end of March)
* Some things depend on these so want to land them first

* MHD won't make March

* TCG/KVM mess
* Bug report on list; Not as minor as thought
* Slow path does not cover everything unfortunately
* May be some other issues
* Random crashes (might be page tables or ??)
* Alternative is to implement performance path
* Treat as normal RAM
* Can't do interleave with lots of memory regions (ways?)
* For now... Don't use emulated CXL memory
* Fan said it would work for some cases?
* Kernel code is now putting things in the right numa nodes
* Kernel may have been using swap
* Should x86 use memblock?
* Jonathan does not think it will help
* Re-read cdat?
* EFI soft reserved causes x86 to keep the info around
* 'numa keep meminfo' or something like that

* AMD CPER pushed out
* Jonathan would like a HEST table from x86 if someone could provide that



## cxl-cli
* [List Media Errors (Poison)](http://lore.kernel.org/r/[email protected]): pending review
* QoS class changes; pending
* Porcelain patches welcome
* How can we make things easier?
* Automate cxl create region for largest regions it can figure out


## Should Linux be the BMC?
* Open BMC has a lot of drivers
* need guard rails
* Might be useful and to share code
* BMC only use cases are questionable
* How do we ID which is which?
* Kconfig CXL_BMC_SUPPORT?
* Similart to raw command support


## v6.8 Fixes
* [CXL QOS Sysfs fixes / simplification](https://patchwork.kernel.org/project/cxl/list/?series=823300): pending next posting
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* [Stop requiring MSI/MSIx](https://lore.kernel.org/r/[email protected]): merged v6.8-rc2
* [Fix x16 Region HPA allocation](http://lore.kernel.org/r/[email protected]): merged v6.8-rc2
* [Fix sleeping lock in CPER handling](http://lore.kernel.org/r/[email protected]): pending next posting
* [Fix duplicate messages in CPER handling](http://lore.kernel.org/r/[email protected])
* [Fix duplicate messages in CPER handling](http://lore.kernel.org/r/[email protected]): Going through EFI tree


## AER fatal panic - wide range of handleing
* Policy change to discuss with comunity
* Instead of hoping we should panic?
* But if DAX just kill the process (invalidate mappings)
* But how much running around should we do?
* Hope was that force remove of driver would do a pr_warn() [let panic on warn crash]
* Need more real world feedback

## v6.9 Queue
* [CXL QOS to NUMA](http://lore.kernel.org/r/170568485801.1008395.12244787918793980621.stgit@djiang5-mobl3): pending review
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