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xen-devel
Re: [Xen-devel] [PATCH 1/3] x86: calculate precisely the memory needed b
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<stefano.stabellini@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [PATCH 1/3] x86: calculate precisely the memory needed by init_memory_mapping |
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From: |
Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> |
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Date: |
Fri, 17 Jun 2011 18:11:39 +0100 |
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xen-devel@xxxxxxxxxxxxxxxxxxx, konrad.wilk@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, hpa@xxxxxxxxx, mingo@xxxxxxx, hpa@xxxxxxxxxxxxxxx, yinghai@xxxxxxxxxx |
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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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