On Mon, Oct 15, 2018 at 12:34:02PM +1100, Alexey Kardashevskiy wrote:
>
> On 10/10/2018 00:24, Christoph Hellwig wrote:
> > This code has been unused since it was merged and is in the way of
> > cleaning up the DMA code, thus remove it.
> >
> > This effectively reverts commit 5d2aa710 ("powerpc/p
Hi,
On 10/13/2018 04:25 PM, Xu Zaibo wrote:
Hi,
On 2018/10/12 13:16, Lu Baolu wrote:
Hi,
The Mediate Device is a framework for fine-grained physical device
sharing across the isolated domains. Currently the mdev framework
is designed to be independent of the platform IOMMU support. As the
res
On Mon, 2018-10-15 at 12:34 +1100, Alexey Kardashevskiy wrote:
> On 10/10/2018 00:24, Christoph Hellwig wrote:
> > This code has been unused since it was merged and is in the way of
> > cleaning up the DMA code, thus remove it.
> >
> > This effectively reverts commit 5d2aa710 ("powerpc/powernv: Ad
On 10/10/2018 00:24, Christoph Hellwig wrote:
> This code has been unused since it was merged and is in the way of
> cleaning up the DMA code, thus remove it.
>
> This effectively reverts commit 5d2aa710 ("powerpc/powernv: Add support
> for Nvlink NPUs").
This code is heavily used by the NVIDI
On Tue, 2018-10-09 at 15:24 +0200, Christoph Hellwig wrote:
> * Find the least restrictive zone that is entirely below the
> @@ -324,11 +305,14 @@ void __init paging_init(void)
> printk(KERN_DEBUG "Memory hole size: %ldMB\n",
>(long int)((top_of_ram - total_ram) >> 20));
>
The dma remap code only really makes sense for not cache coherent
architectures, and currently is only used by arm, arm64 and xtensa.
Split it out into a separate file with a separate Kconfig symbol.
[Laura: you wrote this code back then, do you have a sensible
copyright statement to add, given t
dma_alloc_from_contiguous can return highmem pages depending on the
setup, which a plain non-remapping DMA allocator can't handle. Detect
this case and try the normal page allocator instead.
Signed-off-by: Christoph Hellwig
---
kernel/dma/direct.c | 12
1 file changed, 12 insertion
Please change:
Reported-by: tedheadster
Tested-by: tedheadster
to
Reported-by: Matthew Whitehead
Tested-by: Matthew Whitehead
- Matthew
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* Thomas Gleixner wrote:
> On Sun, 14 Oct 2018, Christoph Hellwig wrote:
>
> > 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 t
On Sun, 14 Oct 2018, Christoph Hellwig wrote:
> 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 be
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.
>
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,
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
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