On 7/12/06, keshetti mahesh <k_mahesh85@xxxxxxxxxxx> wrote:
hi all, i have a problem with the following in my driver, i have to allocate two physically contiguous chunks of 4MB in kernel space and give it to hardware. now i am trying for a solution with which i can access those two chunks as single chunk in the kernel space
It would be advisable to allocate the memory from the "high Memory" area (__GFP_HIGHMEM). Please note that pages allocated from high memory are not permanently mapped into kernel's address space (may not have a logical address). You must manuall map and unmap them as need (kmap() / kunmap()) Regards, Rajat -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
