Hi Joerg,
On 2020/3/10 19:15, Joerg Roedel wrote:
Hi Baolu,
On Sat, Mar 07, 2020 at 02:20:08PM +0800, Lu Baolu wrote:
Lu Baolu (5):
iommu: Configure default domain with dev_def_domain_type
iommu/vt-d: Don't force 32bit devices to uses DMA domain
iommu/vt-d: Don't force PCI sub-hierarchy to use DMA domain
iommu/vt-d: Add dev_def_domain_type callback
iommu/vt-d: Apply per-device dma_ops
Sai Praneeth Prakhya (1):
iommu: Add dev_def_domain_type() callback in iommu_ops
I like this patch-set, but I fear some regressions from patch
"iommu/vt-d: Don't force 32bit devices to uses DMA domain". Have you
tested this series on a couple of machines, ideally even older ones from
the first generation of VT-d hardware?
The oldest hardware I have is Ivy Bridge. :-) Actually, The effect of
using identity domain for 32-bit devices is the same as that of adding
intel_iommu=off in the kernel parameter. Hence, if there is any
regression, people should also find it with intel_iommu=off.
intel_iommu=off support is added at the very beginning of VT-d driver.
Best regards,
baolu
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