> > > > On a 64-bit machine GFP_KERNEL can give me any memory... it all works > > fine on 32-bit highmem kernel as I don't get highmem... I really need > > __GFP_DMA32 memory but we don't have a generic allocator that gives > > this out that I can see.. > > __get_free_pages(..., __GFP_DMA32) on 64bit or __GFP_KERNEL or i386 > (only gives you ~900MB)
Doesn't __get_free_pages give me physically linear memory, which while nice it isn't essential for what I need, so if I can't get my full allocation I could in theory just start to fallback down the orders and calling it multiple times to actually get the amount of memory I need, this just seems overly cumbersome when what I really want is vmalloc_32 to just work correctly on 64-bit systems... (why doesn't vmalloc_32 pass __GFP_DMA32 to the allocator????) > Not sure what you mean? __alloc_pages never bounces by itself. > The nearest you can get is __GFP_DMA/__GFP_DMA32, but these have > their own 16MB/4GB zones and don't use the swiotlb pools. And of course it > only gives you plain memory, but doesn't remap or copy anything. Yes I want __GFP_DMA32 but I'd like it with vmalloc not with __get_free_pages and I've no great need for physically linear page allocations and as I'm after quite a large order I can see this failing ... granted with a 4GB system maybe not that quickly.. Dave. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
