Messages in this thread |  | | Date | Mon, 16 Jun 2008 10:05:38 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 4/8] x86 boot: allow overlapping ebda and efi memmap memory ranges |
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Paul Jackson wrote: > hpa wrote: >> Realistically, we need the infrastructure to be able to make paranoia >> reservations, and you need to be able to deal with later finding they >> are actually in use. > > While the tone of your reply sounds like something I would naturally > agree with, I can't actually figure out what you mean in this case ;). > > In particular, Peter, would you agree/disagree/other with the direction > that Huang and I agreed to last night: > >> Would you recommend doing this with code in arch/x86/kernel/head.c, >> that did not invoke reserve_ebda_region() if efi_enabled was set?
I disagree with it, I do not consider it safe. I think you have to consider the difference between a "safety reservation" and a "actual reservation", with the latter being allowed to overlap the former.
-hpa
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