> > > Instead of setting aside a significant chunk of memory nobody can use, > > > [...] reserve a significant chunk of memory that the kernel is prevented > > > from using [...], but applications are free to use it. > > > > That works great, because user space pages are filtered out in the > > common case, so they can be used freely by the panic kernel. > > Good suggestion. I have been reading that posts already at the same time > before I saw > this reply from you :) > > That could be a good idea and worth to discuss more. I cced Hari > already in the thread. Hari, is it possible for you to extend your > idea to general use, ie. shared by both kdump and fadump? Anyway I > think that is another topic we can discuss separately.
BTW, I remember we had some Red hat internal discussion about CMA previously there is a problem, that is we have crashkernel=,high for reserving high memory and ,low for low memory, we were not sure if CMA can handle this case. Thanks Dave Thanks Dave
