Modern platforms have more than one IOMMU. Each IOMMU has its own
feature set. Some of these features must be consistent among IOMMUs.
Otherwise, these differences can lead to improper behavior in the system.
On the other hand, for some features, each IOMMU can have different
capacity values. So, d
Audit IOMMU Capability/Extended Capability and check if the IOMMUs have
the consistent value for features. Report out or scale to the lowest
supported when IOMMU features have incompatibility among IOMMUs.
Report out features when below features are mismatched:
- First Level 5 Level Paging Suppo
Move IOMMU capability check and sanity check code to cap_audit files.
Also implement some helper functions for sanity checks.
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 20 +
drivers/iommu/intel/cap_audit.h | 20 +
drivers/iommu/intel/iommu.c | 76 +--
Hi Allen,
On Tue, 2021-01-19 at 09:55 +0800, Lu Baolu wrote:
> Hi,
>
> On 1/6/21 9:30 AM, Kyung Min Park wrote:
> > Audit IOMMU Capability/Extended Capability and check if the IOMMUs
> > have
> > the consistent value for features. Report out or scale to the
> > lowest
> > supported when IOMMU fea
On 1/30/21 7:19 AM, Lu Baolu wrote:
> trace_qi_submit() could be used when interrupt remapping is supported,
> but DMA remapping is not. In this case, the following compile error
> occurs.
>
> ../drivers/iommu/intel/dmar.c: In function 'qi_submit_sync':
> ../drivers/iommu/intel/dmar.c:1311:3: erro
trace_qi_submit() could be used when interrupt remapping is supported,
but DMA remapping is not. In this case, the following compile error
occurs.
../drivers/iommu/intel/dmar.c: In function 'qi_submit_sync':
../drivers/iommu/intel/dmar.c:1311:3: error: implicit declaration of function
'trace_qi_s
