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ARM's multiply-mapped memory mess

Posted Dec 16, 2010 3:52 UTC (Thu) by tiffang (subscriber, #48653)
Parent article: ARM's multiply-mapped memory mess

I just think that the kernel can change the page's attribute at runtime.
flush dcaches, mmu entries.. then give that clean page to device drivers.
And rollback when device drivers give it back afterward.
Can it be possible?

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