> From: Lu Baolu
> Sent: Monday, July 6, 2020 8:26 AM
>
> After a page request is handled, software must response the device which
> raised the page request with the handling result. This is done through
'response' is a noun.
> the iommu ops.page_response if the request was reported to outside
> From: Tian, Kevin
> Sent: Monday, July 6, 2020 9:30 AM
>
> > From: Lu Baolu
> > Sent: Monday, July 6, 2020 8:26 AM
> >
> > 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
> From: Lu Baolu
> Sent: Monday, July 6, 2020 8:26 AM
>
> 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
> From: Lu Baolu
> Sent: Monday, July 6, 2020 8:26 AM
>
> 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
> ---
>
> From: Lu Baolu
> Sent: Monday, July 6, 2020 8:26 AM
>
> 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
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
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
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
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
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
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Saturday, July 4, 2020 4:22 AM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> linux-arm-ker...@lists.infradead.org; iommu@lists.linux-foundation.org;
>
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Saturday, July 4, 2020 4:22 AM
> To: Song Bao Hua (Barry Song)
> Cc: robin.mur...@arm.com; h...@lst.de; m.szyprow...@samsung.com;
> iommu@lists.linux-foundation.org; linux-arm-ker...@lists.infradead.org;
>
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