On 02/07/19 18:43, Nadav Amit wrote: >>> Remember that the output goes to the serial port. >> >> RAM size can use the multiboot info (see lib/x86/setup.c). > > The multiboot info, as provided by the boot-loader is not good enough as far > as I remember. The info just defines where to kernel can be loaded, but does > not say how big the memory is. For that, e820 decoding is needed, which I > was too lazy to do. The multiboot info has both e801 memory size and e820 memory map info. e801 is basically the first contiguous chunk of memory below 4GB, it should be enough for kvm-unit-tests. >> For the # of CPUs I'm not sure what you're supposed to do on bare metal >> though. :) > > I know you are not “serious”, but I’ll use this opportunity for a small > clarification. You do need to provide the real number of CPUs as otherwise > things will fail. I do not use cpuid, as my machine, for example has two > sockets. Decoding the ACPI tables is the right way, but I was too lazy to > implement it. What about the mptables, too? Paolo
