On Thursday 09 June 2005 13:04, Tim Bird wrote:
> Hi all,
>
> I'm trying to use virt_to_phys() to find the physical address
> of some kernel RAM. (This is an on ARM OSK board).
> It's not working as I expected:
>
> membase = kmalloc(DEBUG_MEM_LENGTH, GFP_ATOMIC);
> physbase = virt_to_phys(membase);
> printk("membase=0x%p\n", membase);
> printk("physbase=0x%lu\n", physbase);
>
> Gives me:
> membase=0xc1c8c000
> physbase=0x298369024
Are you aware you printed your physbase value in decimal?
> physbase isn't in the range of real physical memory on my
> machine. (I'm only interested in the first page of the
> allocation, so I don't care if subsequent pages are
> not physically contiguous.)
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