Messages in this thread | | | Date | Tue, 10 Dec 2013 14:51:57 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] mm,x86: fix span coverage in e820_all_mapped() |
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On 12/10/2013 01:52 PM, Yinghai Lu wrote: >> >> What happens if it spans more than two regions? > > [A, B), [B+1, C), [C+1, D) ? > start in [A, B), and end in [C+1, D). > > old code: > first with [A, B), start set to B. > then with [B+1, C), start still keep as B. > then with [C+1, D), start still keep as B. > at last still return 0...aka not_all_mapped. > > old code is still right. >
Why not_all_mapped?
-hpa
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