Re: [Xen-devel] [PATCH 1/3] x86: calculate precisely the memory neededby init_memory_mapping

[Ian Jackson]

stefano.stabellini@xxxxxxxxxxxxx writes ("[Xen-devel] [PATCH 1/3] x86: calculate precisely the memory needed by init_memory_mapping"):
> +	if (pgt_buf_end != pgt_buf_top)
> +		printk(KERN_DEBUG "initial kernel pagetable allocation wasted %lx"
> +				" pages\n", pgt_buf_top - pgt_buf_end);

If (due to a bug) pgt_buf_end > pgt_buf_top, this will printk a
message about wasting a negative number of pages, rather than
crashing.  Is there something else that will catch this case ?

Ian.
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