forked from luck/tmp_suning_uos_patched
4ed0d3e6c6
The patch adds kernel parameter intel_iommu=pt to set up pass through mode in context mapping entry. This disables DMAR in linux kernel; but KVM still runs on VT-d and interrupt remapping still works. In this mode, kernel uses swiotlb for DMA API functions but other VT-d functionalities are enabled for KVM. KVM always uses multi level translation page table in VT-d. By default, pass though mode is disabled in kernel. This is useful when people don't want to enable VT-d DMAR in kernel but still want to use KVM and interrupt remapping for reasons like DMAR performance concern or debug purpose. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Weidong Han <weidong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> |
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| .. | ||
| configs | ||
| dig | ||
| hp | ||
| ia32 | ||
| include/asm | ||
| kernel | ||
| kvm | ||
| lib | ||
| mm | ||
| oprofile | ||
| pci | ||
| scripts | ||
| sn | ||
| uv | ||
| xen | ||
| install.sh | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| module.lds | ||