> -Original Message-
[snip]
> > -static void iommu_free_page_table(struct page_info *pg)
> > -{
> > -unsigned int i, next_level = PFN_ORDER(pg) - 1;
> > -u64 pt_maddr = page_to_maddr(pg);
> > -struct dma_pte *pt_vaddr, *pte;
> > -
> > -PFN_ORDER(pg) = 0;
> > -pt_vaddr =
> From: Paul Durrant
> Sent: Tuesday, August 4, 2020 9:42 PM
>
> From: Paul Durrant
>
> This patch converts the VT-d code to use the new IOMMU page table
> allocator
> function. This allows all the free-ing code to be removed (since it is now
> handled by the general x86 code) which reduces TLB
From: Paul Durrant
This patch converts the VT-d code to use the new IOMMU page table allocator
function. This allows all the free-ing code to be removed (since it is now
handled by the general x86 code) which reduces TLB and cache thrashing as well
as shortening the code.
The scope of the mappin
