On 11/13/2013 03:00 PM, Vivek Goyal wrote: > I think it should be easy to truncate ELF headers in kexec-tools too when > we are preparing elf headers. I am not sure if it is right thing to do or > not. If some entry is showing up in /proc/iomem as RAM, then kexec-tools > need to believe that it is a possibility that kernel is using that pfn and > that pfn needs to be dumped out in vmcore. IMHO, kernel should fix this > issue. The kernel will never use a fractional page, so that is not an issue. > Secondly, I am writing in-kernel kexec support too and I prepare ELF > headers there too. And I am facing the same problem there too. So if > we truncate partial pages in e820 both kexec-tools and in kernel kexec > implementation don't have to do anything. I'm mostly worried about truncation upon truncation causing problems. As long as the trimming is done once and with proper consideration for abutting regions, I guess I'm okay with it, although it feels wrong to me. -hpa
