Messages in this thread | | | Date | Tue, 10 Dec 2013 16:35:00 -0800 | Subject | Re: [PATCH] mm,x86: fix span coverage in e820_all_mapped() | From | Yinghai Lu <> |
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On Tue, Dec 10, 2013 at 2:51 PM, H. Peter Anvin <hpa@zytor.com> wrote: > 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?
[B, B+1), and [C, C+1) are not there.
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