Hi,
On 11/11/19 10:05 PM, Qian Cai wrote:
On Nov 11, 2019, at 12:23 AM, Lu Baolu wrote:
The scalable mode is defined in VT-d 3.0. The scalable mode capability
could be checked by reading /sys/devices/virtual/iommu/dmar*/intel-
iommu/ecap. It's currently not friendly for reading. You need
> On Nov 11, 2019, at 12:23 AM, Lu Baolu wrote:
>
> The scalable mode is defined in VT-d 3.0. The scalable mode capability
> could be checked by reading /sys/devices/virtual/iommu/dmar*/intel-
> iommu/ecap. It's currently not friendly for reading. You need to decode
> it according to the
Hi,
On 11/11/19 10:58 AM, Qian Cai wrote:
On Nov 8, 2019, at 10:43 PM, Lu Baolu wrote:
+config INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
+prompt "Enable Intel IOMMU scalable mode by default"
+depends on INTEL_IOMMU
+help
+ Selecting this option will enable the scalable mode if
> On Nov 8, 2019, at 10:43 PM, Lu Baolu wrote:
>
> +config INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
> +prompt "Enable Intel IOMMU scalable mode by default"
> +depends on INTEL_IOMMU
> +help
> + Selecting this option will enable the scalable mode if
> + hardware presents the
Hi,
On 11/11/19 10:00 AM, Qian Cai wrote:
On Nov 10, 2019, at 8:30 PM, Lu Baolu wrote:
How about "pasid based multiple stages DMA translation"?
It is better but I am still not sure how developers should select it or not
when asking. Ideally, should it mention pros and cons of this? At
> On Nov 10, 2019, at 8:30 PM, Lu Baolu wrote:
>
> How about "pasid based multiple stages DMA translation"?
It is better but I am still not sure how developers should select it or not
when asking. Ideally, should it mention pros and cons of this? At minimal,
there should be a line said “if
Hi,
On 11/9/19 11:59 AM, Qian Cai wrote:
On Nov 8, 2019, at 10:40 PM, Lu Baolu wrote:
This adds Kconfig option INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
to make it easier for distributions to enable or disable the
Intel IOMMU scalable mode by default during kernel build.
Signed-off-by: Lu
> On Nov 8, 2019, at 10:40 PM, Lu Baolu wrote:
>
> This adds Kconfig option INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
> to make it easier for distributions to enable or disable the
> Intel IOMMU scalable mode by default during kernel build.
>
> Signed-off-by: Lu Baolu
> ---
>
This adds Kconfig option INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
to make it easier for distributions to enable or disable the
Intel IOMMU scalable mode by default during kernel build.
Signed-off-by: Lu Baolu
---
drivers/iommu/Kconfig | 9 +
drivers/iommu/intel-iommu.c | 7 ++-
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