I am porting 'kdb' to omap3430 platform.
for command 'mdp arg' [mdp is memory dump physical and arg is any physical address] this code gets executed. I dint test for every address b/w 0-0xc0000000
but lots of them randomnly. The other 'md' commands do work for kernel high memory address.[ie. > 0xc0000000] But mdp fails for all the addresses.
this piece of code is part of architecture independant patch of kdb; [for 2.6.24 kernel]
kdb community is very inactive and moreover this question is related to memory management part of the kernel, so I thought i will ask it here
On Mon, Aug 10, 2009 at 8:10 AM, Mulyadi Santosa <mulyadi.santosa@xxxxxxxxx> wrote:
Next time, please start fresh new thread instead of being a part ofOn 8/10/09, Basavaraj Dengi <basavarajdengi@xxxxxxxxx> wrote:
> Hi
>
> In the piece of code below
>
> pfn = (addr >> PAGE_SHIFT);
> if (!pfn_valid(pfn))
>
> [Where PAGE_SHIFT is 12; and addr I tried from 0x0 to > 0xc0000000]
> pfn_valid always fails;
>
> What is wrong? Am I missing something?
another discussion. At least in my Gmail thread's view, your post is
placed under Himanshu's.
Sorry abt that; i will take care of this next time onwards
About your question, I find that a bit strange. In what condition do
you test those codes? And do you see it fail for all addresses in
0-0xc0000000 range or just few of them?
And btw, we're talking about x86 32 bit, right?
