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792fb43ce2
linux/drivers/iommu/intel
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Lu Baolu 792fb43ce2 iommu/vt-d: Enable Intel IOMMU scalable mode by default 
The commit 8950dcd83a ("iommu/vt-d: Leave scalable mode default off")
leaves the scalable mode default off and end users could turn it on with
"intel_iommu=sm_on". Using the Intel IOMMU scalable mode for kernel DMA,
user-level device access and Shared Virtual Address have been enabled.
This enables the scalable mode by default if the hardware advertises the
support and adds kernel options of "intel_iommu=sm_on/sm_off" for end
users to configure it through the kernel parameters.

Suggested-by: Ashok Raj <ashok.raj@intel.com>
Suggested-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20210720013856.4143880-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210818134852.1847070-5-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-08-19 10:41:08 +02:00
..
cap_audit.c iommu/vt-d: Move capability check code to cap_audit files 2021-02-04 14:42:00 +01:00
cap_audit.h iommu/vt-d: Move capability check code to cap_audit files 2021-02-04 14:42:00 +01:00
debugfs.c iommu/vt-d: Expose latency monitor data through debugfs 2021-06-10 09:06:13 +02:00
dmar.c iommu/vt-d: Remove unnecessary oom message 2021-08-19 10:41:08 +02:00
iommu.c iommu/vt-d: Enable Intel IOMMU scalable mode by default 2021-08-19 10:41:08 +02:00
irq_remapping.c pci-v5.13-changes 2021-05-05 13:24:11 -07:00
Kconfig iommu/vt-d: Enable Intel IOMMU scalable mode by default 2021-08-19 10:41:08 +02:00
Makefile iommu/vt-d: Add common code for dmar latency performance monitors 2021-06-10 09:06:13 +02:00
pasid.c iommu/vt-d: Fix kernel-doc syntax in file header 2021-06-10 09:06:12 +02:00
pasid.h iommu/vt-d: Update the virtual command related registers 2021-08-19 10:41:08 +02:00
perf.c iommu/vt-d: Fix linker error on 32-bit 2021-06-10 10:33:14 +02:00
perf.h iommu/vt-d: Add common code for dmar latency performance monitors 2021-06-10 09:06:13 +02:00
svm.c iommu/vt-d: Fix out-bounds-warning in intel/svm.c 2021-06-10 09:06:13 +02:00
trace.c