-stable review patch. If anyone has any objections, please let us know. ------------------ From: Linus Torvalds Not all graphic page remappers support physical addresses over the 4GB mark for remapping, so while some do (the AMD64 GART always did, and I just fixed the i965 to do so properly), we're safest off just forcing GFP_DMA32 allocations to make sure graphics pages get allocated in the low 32-bit address space by default. AGP sub-drivers that really care, and can do better, could just choose to implement their own allocator (or we could add another "64-bit safe" default allocator for their use), but quite frankly, you're not likely to care in practice. So for now, this trivial change means that we won't be allocating pages that we can't map correctly by mistake on x86-64. [ On traditional 32-bit x86, this could never happen, because GFP_KERNEL would never allocate any highmem memory anyway ] Acked-by: Andi Kleen Acked-by: Dave Jones Cc: Eric Anholt Cc: Keith Packard Signed-off-by: Linus Torvalds Signed-off-by: Chris Wright --- drivers/char/agp/generic.c | 2 +- drivers/char/agp/intel-agp.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- linux-2.6.18.4.orig/drivers/char/agp/generic.c +++ linux-2.6.18.4/drivers/char/agp/generic.c @@ -1042,7 +1042,7 @@ void *agp_generic_alloc_page(struct agp_ { struct page * page; - page = alloc_page(GFP_KERNEL); + page = alloc_page(GFP_KERNEL | GFP_DMA32); if (page == NULL) return NULL; --- linux-2.6.18.4.orig/drivers/char/agp/intel-agp.c +++ linux-2.6.18.4/drivers/char/agp/intel-agp.c @@ -160,7 +160,7 @@ static void *i8xx_alloc_pages(void) { struct page * page; - page = alloc_pages(GFP_KERNEL, 2); + page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2); if (page == NULL) return NULL; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/