On Wed, 13 May 2020 22:54:24 -0700
Christoph Hellwig wrote:
> > +* 1. CPU vs. IOMMU
> > +* 2. Guest vs. Host.
> > +*/
> > + switch (addr_width) {
> > +#ifdef CONFIG_X86
> > + case ADDR_WIDTH_5LEVEL:
> > + if (cpu_feature_enabled(X86_FEATURE_LA57) &&
> > + c
> + * 1. CPU vs. IOMMU
> + * 2. Guest vs. Host.
> + */
> + switch (addr_width) {
> +#ifdef CONFIG_X86
> + case ADDR_WIDTH_5LEVEL:
> + if (cpu_feature_enabled(X86_FEATURE_LA57) &&
> + cap_5lp_support(iommu->cap)) {
> + pasid_set_
Nested translation mode is supported in VT-d 3.0 Spec.CH 3.8.
With PASID granular translation type set to 0x11b, translation
result from the first level(FL) also subject to a second level(SL)
page table translation. This mode is used for SVA virtualization,
where FL performs guest virtual to guest
