Re: [Xen-devel] BUG: xend oopses on munmap of /proc/xen/privcmd

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 26 Apr 2005, at 01:43, Rik van Riel wrote:

> How do these two go together with ballooning ?
>
> #define pfn_to_page(pfn)        (mem_map + (pfn))
> #define pfn_valid(pfn)          ((pfn) < max_mapnr)
>
> I'll comb through the changeset you mentioned.  Maybe I'll
> find something ;)
Thanks. I'm pretty sure this issue is not at all connected with 
ballooning.
When a given pfn/page is 'ballooned out' then from the p.o.v. of the 
rest of the OS that pfn/page is allocated to the balloon driver. Thus 
noone else will be using the above macros at the same time.
 -- Keir


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