FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> writes: > >> The other problem is that using only two bits for the needed address >> space is also extremly >> inefficient (4GB and 16MB on x86). Really want masks everywhere and >> optimize for the >> actual requirements. > > swiotlb doesn't allocate GFP_DMA memory. It handles only GFP_DMA32. I was lumping GFP_DMA and swiotlb together here. The pci_alloc_consistent() function uses both interchangedly. They really effectively are the same thing these days and just separated by historical accident. > I have a half-baked patch for it. I'll send it later. The problem are still the *_map users which usually cannot sleep, and then it's difficult to grow. For *_alloc it's relatively easy and to some extend already implemented. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
