Messages in this thread | | | Date | Fri, 13 Nov 1998 02:20:28 -0800 | From | "David S. Miller" <> | Subject | Re: Accessing MMIO PCI space - crossplatform |
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Date: Fri, 13 Nov 1998 09:00:40 +0000 From: Jamie Lokier <lkd@tantalophile.demon.co.uk>
> c) virt_to_phys and virt_to_bus should walk through pagetables instead > of anding/oring with something with something
With care.
There are no page tables on sparc64 for all of the direct physical page mappings. The tlb miss handlers just compute them by hand for kernel tlb misses, no memory accesses, no memory wasted on page tables, and it goes like smoke.
Later, David S. Miller davem@dm.cobaltmicro.com
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