Messages in this thread | | | Date | Tue, 24 Nov 2015 15:48:24 +0000 | Subject | Re: read physical address space | From | alan hopes <> |
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Thanks Yalin.
Yeah, got it.. So, it means I can't directly access physical address, its only the responsibility of MMU to access it. Even if I have a physical address, I need to convert it to kernel virtual address to access it to maintain consistency with other general user-mode memory access operation.
Thanks Alan.
On Tue, Nov 17, 2015 at 4:28 PM, yalin wang <yalin.wang2010@gmail.com> wrote: > you should access it like this: > printk ( *(int*)kmap(pays_to_page(pays_addr))); > > pays address must be mapped into virtual address before access it . >> On Nov 17, 2015, at 23:21, alan hopes <hopes.alan@gmail.com> wrote: >> >> phys_addr >
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