For a user/kernel configuration of 3/1GB and (0-16M DMA , 16-896 - Low , 896 - 1024 - High ) *Q:* Is amount of memory allocated to Vmalloc limited to 128MB? I read an article which said to increase the Vmalloc allocation size we need to either *1)* Change user/kernel distribution like 2.75/1.25 which proportionately increase the address space available to High memory *2)* For a fixed user/kernel distribution reduce the low memory like 16-800 thereby increasing the size available for high memory. In either of the case the memory for vmalloc is limited to user/kernel distribution . i.e. the amount of virtual address space available in high memory. I am a beginner, so please let me know if my understanding is correct..and rectify in-case of wrong.? Thanks, Anup Buchke.