Re: [Xen-devel] [RFC v3 5/6] xen/arm: Add log_dirty support for ARM

[Wei Huang <w1.huang@xxxxxxxxxxx>]

On 05/11/2014 10:28 AM, Julien Grall wrote:
>   the guest very soon. With this
> solution there is a 1GB hole between the 2 banks. Your function will therefore
> stop to work.
>
> Furthermore, Xen should not assume that the layout of the guest will always 
> start
> at GUEST_RAM_BASE.
>
> I think you can use max_mapped_pfn and lowest_mapped_pfn here. You may need to
> modify a bit the signification of it in the p2m code or introduce a new field.
These two values don't work for the purpose of dirty tracking. What we 
need are two fields to track _physical_ memory. lowest_mapped_pfn tracks 
all memory types, which doesn't apply here.
Will new fields to track physical ram space acceptable for you?

-Wei


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