On Thursday 09 February 2006 10:50, Yasunori Goto wrote: > Current code adds memory to ZONE_NORMAL like this. > But, ZONE_DMA32 is available on 2.6.15. So, I'm afraid there are > 2 types trouble. > > a) When new memory is added to < 4GB, this should be added to > Zone_DMA32. > Are there any real machine which allow to add memory under > 4GB?
x86-64 machines usually use a continuous memory map because Windows gets unhappy with too big memory holes (and even Linux is not completely troublefree for UP install kernels) And for a small system this implies memory < 4GB. > b) If machine boots up with under 4GB memory, and new memory > is added to over 4GB, then kernel might panic due to Zone Normal's > initialization is imcomplete. > > Q2) > Are there any real machine which can add memory with NUMA feature? There are and will be. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
