Messages in this thread | | | Subject | Re: [PATCH v2] iommu/vt-d: avoid unnecessory panic if iommu init fail in tboot system | From | Lukasz Hawrylko <> | Date | Thu, 12 Nov 2020 09:13:06 +0100 |
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On Tue, 2020-11-10 at 15:19 +0800, Zhenzhong Duan wrote: > "intel_iommu=off" command line is used to disable iommu but iommu is force > enabled in a tboot system for security reason. > > However for better performance on high speed network device, a new option > "intel_iommu=tboot_noforce" is introduced to disable the force on. > > By default kernel should panic if iommu init fail in tboot for security > reason, but it's unnecessory if we use "intel_iommu=tboot_noforce,off". > > Fix the code setting force_on and move intel_iommu_tboot_noforce > from tboot code to intel iommu code. > > Fixes: 7304e8f28bb2 ("iommu/vt-d: Correctly disable Intel IOMMU force on") > Signed-off-by: Zhenzhong Duan <zhenzhong.duan@gmail.com> > --- > v2: move ckeck of intel_iommu_tboot_noforce into iommu code per Baolu. >
Tested-by: Lukasz Hawrylko <lukasz.hawrylko@linux.intel.com>
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