Re: [PATCH] x86: enable swiotlb for > 4GiG ram on 32-bit kernels

2018-10-18 Thread tedheadster
> But you said without the fix it doesn't work at all? Or is this > the same box, just with the aic7xxx controller disabled? > > In general the patch should only have two effects: > > - set a small amount of memory aside for bounce buffering > - switch the default dma_ops from dma_direct_ops to

Re: [PATCH] x86: enable swiotlb for > 4GiG ram on 32-bit kernels

2018-10-17 Thread tedheadster
> What is the comparism? Is this on a non-aic7xxx kernel with and without > the fix? Christoph, I will try and do some strict before-and-after benchmarking of your patch. It will take a few days because I am on travel. This is on an aic7xxx (it does have that controller) kernel with and without

Re: [PATCH] x86: enable swiotlb for > 4GiG ram on 32-bit kernels

2018-10-16 Thread tedheadster
s 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 > illega

Re: [PATCH] x86: enable swiotlb for > 4GiG ram on 32-bit kernels

2018-10-14 Thread tedheadster
Please change: Reported-by: tedheadster Tested-by: tedheadster to Reported-by: Matthew Whitehead Tested-by: Matthew Whitehead - Matthew ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo