Messages in this thread | | | From | Jochen Karrer <> | Subject | Re: Kernel virtual memory? | Date | Thu, 7 Aug 1997 17:58:04 +0200 (MET DST) |
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Hi,
> Could kernel use virtual memory hardware to make non-linear chunks of > memory to look linear? It seems to me that it could solve the problems > with memory fragmentation and DMA memory allocation.
The memory management is done in the CPU, so only the CPU sees this virtual address. PCI-BUS- and ISA-Address is on intel architecture the same address like the physical address.
> > DMA memory could be allocated by moving allocated blocks away from the > lower 16MB, and other parts of kernel could be made happy by changing the > page tables accordingly. > > So, is this possible/feasible/too ugly to implement? Not possible.
Jochen --
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