On Thu, 26 May 2005, Michael Belamina wrote: > I have tried the patch on kernel version 2.4.28 and it > seems that the fix is not working for this kernel > version. I used gcc version 2.95.4 and it is working. Hmm, you may need additional fixes... How about just switching to 2.6? Currently 2.4 is over 4 years old and it shouldn't be used for new development. > 1. What is the best way to translate 32 bit ioctl > codes to 64 bit? Use arch/mips64/kernel/ioctl32.c, but in 2.6 there may be a generic solution available. > 2. How 64 bit kernel space buffers will be used by a > 32 bit application (using mmap)? As usual. Except you can't get more than 2GB of them. > 3.What is the maximum usable ram out of 2GB I will > have if I am using a 32 bit application and 64 bit > kernel and the kernel is allocating the buffers using > __get_free_pages (I need the buffers for DMA - and I > need them to be physically continuous)? 2GB minus what's used by Linux for other purposes. Physically contiguous? That sounds like a problem (and broken hardware)... Maciej
