search for: bigphysarea

...trying to port a linux application or rather a user mode linux driver (not built into the kernel) to Xen capable linux. This will be running in Dom0. This user mode driver used the linux pigphysarea patch to allocate large (over 1Gig) physically contiguous memory. I have two questions: 1. Is the bigphysarea patch supported on Xen capable linux? If not what is the maximum physically contiguous memory Xen provides. 2. If I were to run my application in DomU instead of Dom0, can the bigphysarea patch be used then. Thanks in advance. Kashmira _______________________________________________...

Hi Folks, I need some large chunk of physical memory, so I allocate it early using alloc_bootmem_low_pages and use it later (akin to bigphysarea patch). The trouble I am having is the following. Suppose the virtual address for the memory area is 0xc14d6000. After xen_create_contiguous_region call, I do a virt_to_bus and the bus address comes out to be 0x18000000. So far so good. However, later when I try to use this memory in a device...