Given a struct page *, how to find corresponding physical address?

Given a struct page *, how to find corresponding physical address?

[Rajat Jain]

Hi,

This is in context of mapping of virtual addresses to physical
addresses by the MMU. I read that the virtual address is taken through
the three level page tables to finally arrive at a struct page.

But how to find the physical address of this page?

TIA,

Rajat
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Re: Given a struct page *, how to find corresponding physical address?

[Rik van Riel]

Rajat Jain wrote:
> Hi,
> 
> This is in context of mapping of virtual addresses to physical
> addresses by the MMU. I read that the virtual address is taken through
> the three level page tables to finally arrive at a struct page.
> 
> But how to find the physical address of this page?

1) page tables point directly at the physical address

2) if you have a struct page, you can call page_to_phys

-- 
"You don't have to be crazy to do this... but it helps." -- Bob Ross
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