From: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> Date: Thu, 22 May 2008 10:13:31 +0900 > DMA on stack is forbidden because of non coherent architecutes and > architectures can't uses stack addresses for DMA? What architectures > can't uses stack addresses for DMA? Would it be better to just forbid > using stack addresses for DMA on all the architectures at all times? Rather, the real problem is that some architectures map the kernel stack virtually, and as a result virt_to_page() and things like that will not work. It really is fully not working to put DMA buffers on the stack in these cases. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
