Finding Physical page number from the virtual address of kernel BSS section

Asked Mar 19 '20 at 13:42

Active Mar 20 '20 at 08:07

Viewed 82 times

I am using 32-bit x86 architecture, I have taken one global variable in kernel space, so memory for that variable will be assigned in the BSS section of kernel's virtual memory. now I have a virtual address of that global variable and using that virtual address I want to read physical page number. Is it possible to read a physical page number? If yes, How?

Can anyone please explain what are a drambase and kas_physbase?

edited Mar 20 '20 at 08:07

Tsyvarev

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asked Mar 19 '20 at 13:42

Sweet_Dobariya

So, which operating system you are talking about, Linux or LynxOS? They are quite different. – Tsyvarev Mar 19 '20 at 20:08
I am talking about LynxOs – Sweet_Dobariya Mar 20 '20 at 04:45
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Ok, so I removed "linux-kernel" tag. – Tsyvarev Mar 20 '20 at 08:07

Finding Physical page number from the virtual address of kernel BSS section

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