On Thu, Jan 09, 2014 at 10:24:25AM -0700, Toshi Kani wrote: [..] > > I think creating a new command line option is simpler as compared to > > creating a new flag in bootparam which in turn disables memory hotplug. > > More users can use that option. For example, if for some reason hotplug > > code is crashing, one can just disable it on command line as work around > > and move on. > > I do not have a strong opinion about having such option. However, I > think it is more user friendly to keep the exactmap option works alone > on any platforms. I think we should create internally a variable which will disable memory hotplug. And set that variable based on memmap=exactmap, mem=X and also provide a way to disable memory hotplug directly using command line option. Current kexec-tools can use memmap=exactmap and be happy. I am writing a new kexec syscall and will not be using memmap=exactmap and would need to use that command line option to disable memory hotplug behavior. Thanks Vivek
