Messages in this thread | | | Date | Sun, 14 Oct 2018 10:14:43 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH] x86: enable swiotlb for > 4GiG ram on 32-bit kernels |
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On Sun, Oct 14, 2018 at 10:13:31AM +0200, Thomas Gleixner wrote: > On Sun, 14 Oct 2018, Christoph Hellwig wrote: > > > We already build the swiotlb code for 32b-t kernels with PAE support, > > but the code to actually use swiotlb has only been enabled for 64-bit > > kernel for an unknown reason. > > > > Before Linux 4.18 we papers over this fact because the networking code, > > the scsi layer and some random block drivers implenented their own > > bounce buffering scheme. > > > > Fixes: 21e07dba ("scsi: reduce use of block bounce buffers") > > Fixes: ab74cfeb ("net: remove the PCI_DMA_BUS_IS_PHYS check in illegal_highdma") > > Reported-by: tedheadster <tedheadster@gmail.com> > > Tested-by: tedheadster <tedheadster@gmail.com> > > I'll add your SOB when picking this up :)
Thanks. Here it is in writing:
Signed-off-by: Christoph Hellwig <hch@lst.de>
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