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Thu, 25 Sep 2025 18:17:45 +0000 From: Date: Thu, 25 Sep 2025 11:17:43 -0700 To: "Koralahalli Channabasappa, Smita" , , Smita Koralahalli , , , , , CC: Davidlohr Bueso , Jonathan Cameron , Dave Jiang , "Alison Schofield" , Vishal Verma , Ira Weiny , Matthew Wilcox , Jan Kara , "Rafael J . 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The general problem > > here is conflicts between e820 memory resources and CXL subsystem memor= y > > resources. > >=20 > > Smita Koralahalli wrote: > >> Insert Soft Reserved memory into a dedicated soft_reserve_resource tre= e > >> instead of the iomem_resource tree at boot. > >> > >> Publishing Soft Reserved ranges into iomem too early causes conflicts = with > >> CXL hotplug and region assembly failure, especially when Soft Reserved > >> overlaps CXL regions. > >> > >> Re-inserting these ranges into iomem will be handled in follow-up patc= hes, > >> after ensuring CXL window publication ordering is stabilized and when = the > >> dax_hmem is ready to consume them. > >> > >> This avoids trimming or deleting resources later and provides a cleane= r > >> handoff between EFI-defined memory and CXL resource management. > >> > >> Signed-off-by: Smita Koralahalli > >=20 > >=20 > >> Signed-off-by: Dan Williams > >=20 > > Smita, if you added changes this should have Co-developed-by. Otherwise > > plain Signed-off-by is interpreted as only chain of custody. Any other > > patches that you add my Signed-off-by to should also have > > Co-developed-by or be From: me. > >=20 > > Alternatively if you completely rewritel a patch with your own approach > > then note the source (with a Link:) and leave off the original SOB. > >=20 > > Lastly, in this case it looks unmodified from what I wrote? Then it > > should be: > >=20 > > From: Dan Williams > >=20 > > Signed-off-by: Dan Williams > > Signed-off-by: Smita Koralahalli > >=20 > > ...to show the chain of custody of you forwarding a diff authored > > completely by someone else. >=20 > Thanks for clarifying, Dan. I wasn=E2=80=99t aware of the distinction bef= ore=20 > (especially to handle the chain of custody..). I will update to reflect=20 > that properly and will also be careful with how I handle authorship and=20 > sign-offs in future submissions. Yeah, the choice to replace From: is subjective and I usually reserve that for significant rewrites. If any of the original patch remains then add Co-developed-by + Signed-off-by. If none of the original patch remains I do still like to say: "based on an original patch by ..." with a Link: to that inspiration patch. ...and if you just forward the original, keep From: untouched and just add your own Signed-off-by as documented in Documentation/process/submitting-patches.rst.=