Thanks for your quick reply. James Bottomley wrote: > In COW breaking, the page table entry is copied, so A and B no longer > have page table entries at the same physical location. If the COW is > intact, A and B have the same physical page, but it's also accessed by > the same virtual address, hence no aliasing. Let me explain more. In the scenario, I assume: No aliasing between A and B. We have aliasing between kernel access and user access. Before COW breaking A and B share same data (with no aliasing same space identifier color), and B sees data in cache, while memory has stale data. At COW breaking, kernel copies the memory, it doesn't see new data in cache because of aliasing. Isn't it possible? -- -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
