> it seems like we do for some reason never actually enable swiotlb
> for 32-bit x86. Before my commit the block bounce buffering papered
> over that for networking, Please try this patch:
>
> diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
> index
On Sat, Oct 13, 2018 at 10:09:52AM -0400, tedheadster wrote:
> Christoph,
> here is all of the newly patched dmesg output. I also added
> 'aic7xxx.a9c7xxx=verbose' for extra information.
Hi Matthew,
it seems like we do for some reason never actually enable swiotlb
for 32-bit x86. Before my
Christoph,
here is all of the newly patched dmesg output. I also added
'aic7xxx.a9c7xxx=verbose' for extra information.
Matthew
[0.00] Linux version 4.18.12.pentium4-xeon-christoph+
(root@pentium4) (gcc version 5.4.0 (Gentoo 5.4.0-r4 p1.8, pie-0.6.5))
#525 SMP PREEMPT Sat Oct 13
Hi Ted,
thanks for the dmesg. This shows your HBA doesn't even support the
odd 39-bit addressing. Now the real question is why we don't use
swiotlb. For that I'd like to see the whole dmesg from the very
beinning if you have it. Also it seems this boot didn't have the
WARN_ON_ONCE I sent you
> That isn't a limit, just a reporting clause - the real check is this
> line a little above:
>
> if (unlikely(dev && !dma_capable(dev, dma_addr, size))) {
>
> which is purely based on the dma mask. So for some reason we must
> be in 32-bit only mode for the dma-mask, and not actually
On Mon, Oct 01, 2018 at 04:57:39PM -0400, tedheadster wrote:
> Christoph,
> I was able to bisect this to your patch "scsi: reduce use of block
> bounce buffers". I am getting the error on a 32-bit Dell PowerEdge
> 6650. It has the aic7xxx integrated onto the motherboard.
>
> Again, here is the
Christoph,
I was able to bisect this to your patch "scsi: reduce use of block
bounce buffers". I am getting the error on a 32-bit Dell PowerEdge
6650. It has the aic7xxx integrated onto the motherboard.
Again, here is the error:
aic7xxx :00:03.0: dma_direct_map_sg: overflow
On Sun, Sep 30, 2018 at 07:28:50PM -0400, tedheadster wrote:
> Hannes,
> I'm getting the following error in a custom configured 4.18 32-bit
> x86 kernel supporting PAE, with 16GiB physical memory. It loops
> infinitely on the error.
>
> aic7xxx :00:03.0: dma_direct_map_sg: overflow
>
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