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Re: [Xen-devel] Grab the physical address of a label
Please don't top post, it makes it hard to follow the flow of the
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On Thu, 2012-06-07 at 05:29 +0100, Zeinab Alebouyeh wrote:
> Thanks but I think if I find the base physical address of xen image I
> can convert virtual address to physical address
I'm not sure what this has to do with taking the address of a label,
like you originally asked, but...
There are macros to convert a xenheap virtual address into a physical
one and back, see __pa and __va. (Note that these only work for xenheap
> I'm working in xen4 and my platform is: Processor AMD 64 and Centos 6
> i386 with 8G of RAM
Are you using a 32-bit or 64-bit hypervisor?
I strongly recommend basing all future x86 work on 64-bit Xen, even if
you are using a 32 bit dom0.
> Can anyone tell me The physical address that xen image load in it?
> This physical address depends on platform?
Yes, Xen will relocate itself at start of day. You should be able to
figure out the details from the implementation of __pa and __va.
It might be helpful if you described what you are actually trying to
achieve here -- what is your end goal?
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