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Subjectuses of cmpxchg/xadd in spinlock.h and rwsem.h vs. CONFIG_M386
While looking at a completely different issue I happened to grep for uses of
xadd, and it would appear to me that there got uses added that would make
a M386-configured SMP kernel die on an actual i386.

Oh, for the rwsem case I see - it would use the RWSEM_GENERIC_SPINLOCK case
when selecting M386. But I see nothing similar for the ticket spinlocks - am
I overlooking something?


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