Messages in this thread | | | From | Andi Kleen <> | Subject | Re: x86_64: 2.6.14-rc4 swiotlb broken | Date | Mon, 17 Oct 2005 18:26:40 +0200 |
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On Monday 17 October 2005 18:02, Linus Torvalds wrote: > On Mon, 17 Oct 2005, Andi Kleen wrote: > > On Monday 17 October 2005 17:27, Linus Torvalds wrote: > > > On Mon, 17 Oct 2005, Andi Kleen wrote: > > > > The patch is actually not quite correct - in theory node 0 could be > > > > too small to contain the full swiotlb bounce buffers. > > > > > > Is node 0 guaranteed to be all low-memory? What if it allocates stuff > > > at the end of memory on NODE(0)? > > > > This is 64bit ... only low memory. > > Ehh.. No there isn't. > > PCI DMA isn't magically 64-bit, even on your Opteron. > > So low memory in this case is anything < 32 bits. How many bits the CPU > has is immaterial.
That's completely new terminology. We always called all of ZONE_NORMAL low memory.
The 32bit DMA zone had no special name before the ZONE_DMA32 patches. With that they are called dma32 zone.
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