Messages in this thread | | | Date | Wed, 28 May 2014 10:51:40 -0400 | From | Vivek Goyal <> | Subject | Re: [PATCH] export efi.flags to sysfs |
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On Wed, May 28, 2014 at 10:09:35AM +0800, Dave Young wrote:
[..] > > I've only vaguely been following along with the other thread, so please > > summarise everything again in your patch. Particularly, I need answers > > to the following questions, > > > > - Are you trying to fix a kexec/kdump regression? > > Somehow it is a regression.
Well, it is a *regression*. Previously kdump would work with SGI UV machines as it used "noefi". Now kexec by default thinks that efi is enabled and 1:1 mappings are in place and that does not work with SGI UV machines.
So just providing --noefi is not enough. Somebody needs to automatically figure out that this SGI machine does not contain 1:1 mapping and hence need to fall back to old mode. --noefi is good for override.
Thanks Vivek
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