> From: Jean-Philippe Brucker
> Sent: Friday, June 26, 2020 3:48 PM
>
> On Wed, Jun 24, 2020 at 01:55:15AM -0700, Liu Yi L wrote:
> > IOMMUs that support nesting translation needs report the capability
> > info to userspace, e.g. the format of first level/stage paging structures.
> >
> > This
Hi Robin,
> From: Robin Murphy
> Sent: Saturday, June 27, 2020 12:05 AM
>
> On 2020-06-26 08:47, Jean-Philippe Brucker wrote:
> > On Wed, Jun 24, 2020 at 01:55:15AM -0700, Liu Yi L wrote:
> >> IOMMUs that support nesting translation needs report the capability
> >> info to userspace, e.g. the
On Fri, Jun 26, 2020 at 01:54:12PM -0700, Jonathan Lemon wrote:
> On Fri, Jun 26, 2020 at 09:47:25AM +0200, Christoph Hellwig wrote:
> >
> > Note that this is somewhat urgent, as various of the APIs that the code
> > is abusing are slated to go away for Linux 5.9, so this addition comes
> > at a
On Sat, Jun 27, 2020 at 01:00:19AM +0200, Daniel Borkmann wrote:
> Given there is roughly a ~5 weeks window at max where this removal could
> still be applied in the worst case, could we come up with a fix / proposal
> first that moves this into the DMA mapping core? If there is something that
>
The following changes since commit dbed452a078d56bc7f1abecc3edd6a75e8e4484e:
dma-pool: decouple DMA_REMAP from DMA_COHERENT_POOL (2020-06-15 08:35:30
+0200)
are available in the Git repository at:
git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-5.8-4
for you to fetch
Hi!
While porting on an old out-of-tree driver I noticed that dma_alloc_coherent()
was used with dev being NULL.
commit 148a97d5a02a62f81b5d6176f871c94a65e1f3af
Author: Dan Carpenter
Date: Wed Apr 24 17:24:37 2019 +0300
dma-mapping: remove an unnecessary NULL check
We already
On Sat, Jun 27, 2020 at 01:45:16PM +0200, Richard Weinberger wrote:
> Hi!
>
> While porting on an old out-of-tree driver I noticed that dma_alloc_coherent()
> was used with dev being NULL.
>
> commit 148a97d5a02a62f81b5d6176f871c94a65e1f3af
> Author: Dan Carpenter
> Date: Wed Apr 24 17:24:37
On Sat, 27 Jun 2020 02:34:25 +0100,
John Stultz wrote:
>
> On Fri, Jun 26, 2020 at 12:42 AM Stephen Boyd wrote:
> >
> > Quoting John Stultz (2020-06-24 17:10:37)
> > > diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c
> > > index 6ae9e1f0819d..3fee8b655da1 100644
> > > ---
On Fri, Jun 26, 2020 at 1:01 PM Jordan Crouse wrote:
>
> Use the aperture settings from the IOMMU domain to set up the virtual
> address range for the GPU. This allows us to transparently deal with
> IOMMU side features (like split pagetables).
>
> Signed-off-by: Jordan Crouse
> ---
>
>
On Fri, Jun 26, 2020 at 1:04 PM Jordan Crouse wrote:
>
> Add support for using per-instance pagetables if all the dependencies are
> available.
>
> Signed-off-by: Jordan Crouse
> ---
>
> drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 43 +++
>
On Sat, Jun 27, 2020 at 12:56 PM Rob Clark wrote:
>
> On Fri, Jun 26, 2020 at 1:04 PM Jordan Crouse wrote:
> >
> > Add support for using per-instance pagetables if all the dependencies are
> > available.
> >
> > Signed-off-by: Jordan Crouse
> > ---
> >
> > drivers/gpu/drm/msm/adreno/a6xx_gpu.c
Le 24/06/2020 à 09:38, Christoph Hellwig a écrit :
Hi Guenter,
can you try the patch below? This just converts the huge allocations
in mptbase to use GFP_KERNEL. Christophe (added to Cc) actually has
a scripted conversion for the rest that he hasn't posted yet, so I'll
aim for the minimal
The pull request you sent on Sat, 27 Jun 2020 09:49:02 +0200:
> git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-5.8-4
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/f05baa066d0f6a38f0624c28008fb2f53cd00e17
Thank you!
--
Deet-doot-dot, I am a bot.
Hi,
This series adds page request event reporting and response support to
the Intel IOMMU driver. This is necessary when the page requests must
be processed by any component other than the vendor IOMMU driver. For
example, when a guest page table was bound to a PASID through the
It is refactored in two ways:
- Make it global so that it could be used in other files.
- Make bus/devfn optional so that callers could ignore these two returned
values when they only want to get the coresponding iommu pointer.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 55
A pasid might be bound to a page table from a VM guest via the iommu
ops.sva_bind_gpasid. In this case, when a DMA page fault is detected
on the physical IOMMU, we need to inject the page fault request into
the guest. After the guest completes handling the page fault, a page
response need to be
After a page request is handled, software must response the device which
raised the page request with the handling result. This is done through
the iommu ops.page_response if the request was reported to outside of
vendor iommu driver through iommu_report_device_fault(). This adds the
VT-d
There are several places in the code that need to get the pointers of
svm and sdev according to a pasid and device. Add a helper to achieve
this for code consolidation and readability.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/svm.c | 121 +-
1 file
On Sun, 21 Jun 2020, Guenter Roeck wrote:
> > When a DMA coherent pool is depleted, allocation failures may or may not
> > get reported in the kernel log depending on the allocator.
> >
> > The admin does have a workaround, however, by using coherent_pool= on the
> > kernel command line.
> >
>
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