Messages in this thread | | | Date | Tue, 19 Nov 2002 07:28:58 -0800 | From | "Martin J. Bligh" <> | Subject | Re: [ANNOUNCE][CFT] kexec for v2.5.48 && kexec-tools-1.7 |
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> I suspect the hardware shutdown and start up logic for NUMAQ cpus > needs some special handling.
Almost certainly ;-) One of the main things I do differently on boot is to use NMIs rather than the normal INIT/STARTUP sequence to bootstrap CPUs with .... thus they aren't as thoroughly reset. Things like clearing down the local APIC state (but NOT the LDR) and clearing down the IO-APICs will be especially important. I haven't looked at your code yet to see exactly what it does here though.
> Small steps. When I bypass the BIOS I need to get all of the information > the kernel normally would get from the BIOS from someplace else. Currently > you can use the "mem= " kernel command line parameters. Of you can dig the > /proc/iomem and /proc/meminfo and other places and get the BIOS's memory map. > There isn't a really good source, so I started with something that would work, > and I will work the user space tools up to something that works well. > > I will happily accept patches :)
Sounds like we should just export back to you the value we parsed from the BIOS from the existing boot, no? I'll see if I can make you a patch to do that ...
M.
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