This patch dumps all active mapping entries from pagetable
to a debugfs directory named "mappings".
Attaching an example:
SWGROUP: hc
as->id: 0
as->attr: R|W|N
as->pd_dma: 0x80c03000
{
[index: 1023] 0xf0080c3e (count: 2)
{
PTE RANGE | ATTR | PHYS
This could ease driver to access corresponding as pointer
when having tegra_smmu_group pointer only, which can help
new mappings debugfs nodes.
Also moving tegra_smmu_find_group_soc() upward, for using
it in new tegra_smmu_attach_as(); and it's better to have
all tegra_smmu_find_* functions togeth
This patch changes in struct tegra_smmu_group to use swgrp
pointer instead of swgroup, as a preparational change for
the "mappings" debugfs feature.
Signed-off-by: Nicolin Chen
---
drivers/iommu/tegra-smmu.c | 12
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers
There are a few structs using "group" for their pointer instances.
This gets confusing sometimes. The instance of struct iommu_group
is used in local function with an alias "grp", which can separate
it from others.
So this patch simply renames "group" to "grp" as a cleanup.
Signed-off-by: Nicolin
There are both tegra_smmu_swgroup and tegra_smmu_group structs
using "group" for their pointer instances. This gets confusing
to read the driver sometimes.
So this patch renames "group" of struct tegra_smmu_swgroup to
"swgrp" as a cleanup. Also renames its "find" function.
Note that we already ha
There are both tegra_smmu_soc and tegra_smmu_group_soc using "soc"
for their pointer instances. This patch renames the one of struct
tegra_smmu_group_soc from "soc" to "group_soc" to distinguish it.
Signed-off-by: Nicolin Chen
---
drivers/iommu/tegra-smmu.c | 17 +
1 file changed
This series of patches adds a new mappings node to debugfs for
tegra-smmu driver. The first five patches are all preparational
changes for PATCH-6, based on Thierry's review feedback against
v5: https://lkml.org/lkml/2021/3/16/447
Changelog
v6:
* Added PATCH1-3 for better naming conventions
* Ad
Thanks a lot.
I've applied this with a little change to avoid breaking up the
printed string into two lines.
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iommu mailing list
iommu@lists.linux-foundation.org
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Now that the dust has settled on converting all the x86 drivers to
iommu-dma, we can punt the Kconfig selection to arch code where it
was always intended to be.
CC: Christoph Hellwig
CC: Marek Szyprowski
CC: x...@kernel.org
CC: linux-i...@vger.kernel.org
Signed-off-by: Robin Murphy
---
arch/ia
IOVA cookies are now got and put by core code, so we no longer need to
export these to modular drivers. The export for getting MSI cookies
stays, since VFIO can still be a module, but it was already relying on
someone else putting them, so that aspect is unaffected.
Reviewed-by: Lu Baolu
Reviewed
The addition of the DART driver crossed over with moving IOVA cookie
management into core code; clean up the now-unnecessary remnants here.
Acked-by: Sven Peter
Tested-by: Sven Peter
Signed-off-by: Robin Murphy
---
drivers/iommu/apple-dart.c | 2 --
1 file changed, 2 deletions(-)
diff --git a
Hi Joerg,
As planned, here are the follow-up patches to resolve the merge of the
DART driver with the core changes. There's some argument for this being
5.15 fix material (the driver getting DMA cookies unconditionally is
still technically wrong), but in practice it shouldn't be an issue
either if
Is there further feedback on these patches? Only patch 7 is still
pending review.
-David
On Mon, Aug 30, 2021 at 2:00 PM David Stevens wrote:
>
> This patch set includes various fixes for dma-iommu's swiotlb bounce
> buffers for untrusted devices.
>
> The min_align_mask issue was found when runn
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