Messages in this thread |  | | Date | Mon, 16 Jun 2008 03:24:57 -0500 | From | Paul Jackson <> | Subject | Re: [PATCH 4/8] x86 boot: allow overlapping ebda and efi memmap memory ranges |
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Huang wrote: > I think it is better to change boot loader to avoid memory area of EBDA.
Would this require the bootloader to know the kernels rather arbitrary heuristics for inventing and placing an EBDA area, in reserve_ebda_region()?
In general, I would think it better not to have to code into the EFI firmware or bootloader such knowledge. But perhaps I am wrong here.
If the kernel is going to reserve an EBDA region even if no EBDA is requested by the BIOS, then I would think that the kernel should be more tolerant of BIOS's that put something else in that place.
> Or do not reserve EBDA on EFI system.
I suppose. This would have been a bigger change than I could suggest. For all I know, there are existing systems using EBDA and EFI together. Would this change break them?
If you have good reason to know that's essentially impossible then I have no objections, so far as my needs go, to not reserving EBDA on EFI systems.
-- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@sgi.com> 1.940.382.4214
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