Re: [Xen-devel] question about domU memory mapping

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 27 Jul 2005, at 07:37, Xin Zhao wrote:

> I am trying to map some memory page in DomU kernel space. 
> Specifically, I
> am trying to map the in-kernel module structure of sunrpc whose 
> address is
> d0848480 and machine address is 00000480. The aligned page becomes zero
> (that's weird, I don't know whether that's possible). When I tried to 
> map
> it into Dom0, I got an error number -14 which means bad address.
>
> So my question is:
> 1. Is this kind memory remappable?
> 2. If so, what's wrong with this? or what's the right way to do that?
The machine address of that structure is certainly not 0x480. Xen would 
never allocate a page below 1MB to a domain.
 -- Keir


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