On Tue, Jan 03, 2017 at 07:22:39PM +0800, Peter Xu wrote:
> Reported-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
> Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
> ---
> Tests: map one page twice and see whether dmar work
>
> Alex, do you mind I add your s-o-b as well in this patch above mine? :)
I am fine with either :)
> Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
> ---
> lib/x86/intel-iommu.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/lib/x86/intel-iommu.c b/lib/x86/intel-iommu.c
> index 20b9240..7a3f324 100644
> --- a/lib/x86/intel-iommu.c
> +++ b/lib/x86/intel-iommu.c
> @@ -166,9 +166,6 @@ static void vtd_install_pte(vtd_pte_t *root, iova_t iova,
> }
> }
>
> -#define VTD_PHYS_TO_VIRT(x) \
> - ((void *)(((uint64_t)phys_to_virt(x)) >> VTD_PAGE_SHIFT))
> -
> /**
> * vtd_map_range: setup IO address mapping for specific memory range
> *
> @@ -203,7 +200,7 @@ void vtd_map_range(uint16_t sid, iova_t iova, phys_addr_t pa, size_t size)
> printf("allocated vt-d root entry for PCI bus %d\n",
> bus_n);
> } else
> - ce = VTD_PHYS_TO_VIRT(re->context_table_p);
> + ce = phys_to_virt(re->context_table_p << VTD_PAGE_SHIFT);
>
> /* Point to the correct context entry */
> ce += devfn;
> @@ -224,7 +221,7 @@ void vtd_map_range(uint16_t sid, iova_t iova, phys_addr_t pa, size_t size)
> printf("allocated vt-d context entry for devfn 0x%x\n",
> devfn);
> } else
> - slptptr = VTD_PHYS_TO_VIRT(ce->slptptr);
> + slptptr = phys_to_virt(ce->slptptr << VTD_PAGE_SHIFT);
>
> while (size) {
> /* TODO: currently we only map 4K pages (level = 1) */
> --
> 2.7.4
>
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