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On Tue, 29 Jan 2002, Linus Torvalds wrote: > On Tue, 29 Jan 2002, Oliver Xymoron wrote: > > > > Seems like we could do slightly better to have these local areas mapped to > > the same virtual address on each processor, which does away with the need > > for an entire level of indirection. > > No no no. > > The reason it is a stupid idea is that if you do it, you can no longer > share page tables between CPU's (unless all CPU's you support have TLB > fill in software). Yes, obviously. Nearly as good would be replacing the current logic for figuring out the current processor id through current with logic to access the per-cpu data. The primary use of that id is indexing that data anyway. -- "Love the dolphins," she advised him. "Write by W.A.S.T.E.." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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