This is a note to let you know that I've just added the patch titled ia64: export memory_add_physaddr_to_nid to fix cxl build error to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ia64-export-memory_add_physaddr_to_nid-to-fix-cxl-bu.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit a271fd1eaf82758ec79cc7c46bcf9ea2364d60ed Author: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Date: Sat Sep 10 18:26:16 2022 -0700 ia64: export memory_add_physaddr_to_nid to fix cxl build error [ Upstream commit 97c318bfbe84efded246e80428054f300042f110 ] cxl_pmem.ko uses memory_add_physaddr_to_nid() but ia64 does not export it, so this causes a build error: ERROR: modpost: "memory_add_physaddr_to_nid" [drivers/cxl/cxl_pmem.ko] undefined! Fix this by exporting that function. Fixes: 8c2676a5870a ("hot-add-mem x86_64: memory_add_physaddr_to_nid node fixup") Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Dan Williams <dan.j.williams@xxxxxxxxx> Cc: Ben Widawsky <bwidawsk@xxxxxxxxxx> Cc: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Cc: linux-ia64@xxxxxxxxxxxxxxx Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Keith Mannthey <kmannth@xxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c index d6579ec3ea32..4c7b1f50e3b7 100644 --- a/arch/ia64/mm/numa.c +++ b/arch/ia64/mm/numa.c @@ -75,5 +75,6 @@ int memory_add_physaddr_to_nid(u64 addr) return 0; return nid; } +EXPORT_SYMBOL(memory_add_physaddr_to_nid); #endif #endif